1414 lines
41 KiB
Ruby
1414 lines
41 KiB
Ruby
# frozen_string_literal: true
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class Search
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DIACRITICS ||= /([\u0300-\u036f]|[\u1AB0-\u1AFF]|[\u1DC0-\u1DFF]|[\u20D0-\u20FF])/
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HIGHLIGHT_CSS_CLASS = "search-highlight"
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cattr_accessor :preloaded_topic_custom_fields
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self.preloaded_topic_custom_fields = Set.new
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def self.on_preload(&blk)
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(@preload ||= Set.new) << blk
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end
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def self.preload(results, object)
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@preload.each { |preload| preload.call(results, object) } if @preload
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end
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def self.per_facet
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5
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end
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def self.per_filter
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50
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end
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def self.facets
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%w[topic category user private_messages tags all_topics exclude_topics]
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end
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def self.ts_config(locale = SiteSetting.default_locale)
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# if adding a text search configuration, you should check PG beforehand:
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# SELECT cfgname FROM pg_ts_config;
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# As an aside, dictionaries can be listed by `\dFd`, the
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# physical locations are in /usr/share/postgresql/<version>/tsearch_data.
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# But it may not appear there based on pg extension configuration.
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# base docker config
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#
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case locale.split("_")[0].to_sym
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when :da
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"danish"
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when :nl
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"dutch"
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when :en
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"english"
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when :fi
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"finnish"
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when :fr
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"french"
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when :de
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"german"
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when :hu
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"hungarian"
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when :it
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"italian"
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when :nb
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"norwegian"
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when :pt
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"portuguese"
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when :ro
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"romanian"
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when :ru
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"russian"
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when :es
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"spanish"
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when :sv
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"swedish"
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when :tr
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"turkish"
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else
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"simple" # use the 'simple' stemmer for other languages
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end
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end
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def self.wrap_unaccent(str)
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SiteSetting.search_ignore_accents ? "unaccent(#{str})" : str
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end
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def self.segment_chinese?
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%w[zh_TW zh_CN].include?(SiteSetting.default_locale) || SiteSetting.search_tokenize_chinese
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end
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def self.segment_japanese?
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SiteSetting.default_locale == "ja" || SiteSetting.search_tokenize_japanese
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end
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def self.japanese_punctuation_regexp
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# Regexp adapted from https://github.com/6/tiny_segmenter/blob/15a5b825993dfd2c662df3766f232051716bef5b/lib/tiny_segmenter.rb#L7
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@japanese_punctuation_regexp ||=
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Regexp.compile("[-–—―.。・（）()［］｛｝{}【】⟨⟩、､,，،…‥〽「」『』〜~！!：:？?\"'|_＿“”‘’;/⁄／«»]")
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end
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def self.prepare_data(search_data, purpose = nil)
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data = search_data.dup
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data.force_encoding("UTF-8")
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if purpose != :topic
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if segment_chinese?
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require "cppjieba_rb" unless defined?(CppjiebaRb)
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segmented_data = []
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# We need to split up the string here because Cppjieba has a bug where text starting with numeric chars will
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# be split into two segments. For example, '123abc' becomes '123' and 'abc' after segmentation.
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data.scan(/(?<chinese>[\p{Han}。,、“”《》…\.:?!;()]+)|([^\p{Han}]+)/) do
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match_data = $LAST_MATCH_INFO
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if match_data[:chinese]
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segments = CppjiebaRb.segment(match_data.to_s, mode: :mix)
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segments = CppjiebaRb.filter_stop_word(segments) if ts_config != "english"
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segments = segments.filter { |s| s.present? }
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segmented_data << segments.join(" ")
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else
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segmented_data << match_data.to_s.squish
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end
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end
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data = segmented_data.join(" ")
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elsif segment_japanese?
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data.gsub!(japanese_punctuation_regexp, " ")
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data = TinyJapaneseSegmenter.segment(data)
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data = data.filter { |s| s.present? }
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data = data.join(" ")
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else
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data.squish!
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end
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end
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data.gsub!(/\S+/) do |str|
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if str =~ %r{^["]?((https?://)[\S]+)["]?$}
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begin
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uri = URI.parse(Regexp.last_match[1])
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uri.query = nil
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str = uri.to_s
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rescue URI::Error
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# don't fail if uri does not parse
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end
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end
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str
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end
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data
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end
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def self.word_to_date(str)
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return Time.zone.now.beginning_of_day.days_ago(str.to_i) if str =~ /^[0-9]{1,3}$/
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if str =~ /^([12][0-9]{3})(-([0-1]?[0-9]))?(-([0-3]?[0-9]))?$/
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year = $1.to_i
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month = $2 ? $3.to_i : 1
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day = $4 ? $5.to_i : 1
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return if day == 0 || month == 0 || day > 31 || month > 12
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return(
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begin
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Time.zone.parse("#{year}-#{month}-#{day}")
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rescue ArgumentError
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end
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)
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end
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return Time.zone.now.beginning_of_day.yesterday if str.downcase == "yesterday"
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titlecase = str.downcase.titlecase
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if Date::DAYNAMES.include?(titlecase)
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return Time.zone.now.beginning_of_week(str.downcase.to_sym)
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end
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if idx = (Date::MONTHNAMES.find_index(titlecase) || Date::ABBR_MONTHNAMES.find_index(titlecase))
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delta = Time.zone.now.month - idx
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delta += 12 if delta < 0
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Time.zone.now.beginning_of_month.months_ago(delta)
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end
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end
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def self.min_post_id_no_cache
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return 0 unless SiteSetting.search_prefer_recent_posts?
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offset, has_more =
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Post
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.unscoped
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.order("id desc")
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.offset(SiteSetting.search_recent_posts_size - 1)
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.limit(2)
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.pluck(:id)
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has_more ? offset : 0
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end
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def self.min_post_id(opts = nil)
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return 0 unless SiteSetting.search_prefer_recent_posts?
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# It can be quite slow to count all the posts so let's cache it
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Discourse
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.cache
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.fetch("search-min-post-id:#{SiteSetting.search_recent_posts_size}", expires_in: 1.week) do
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min_post_id_no_cache
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end
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end
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attr_accessor :term
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attr_reader :clean_term, :guardian
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def initialize(term, opts = nil)
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@opts = opts || {}
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@guardian = @opts[:guardian] || Guardian.new
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@search_context = @opts[:search_context]
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@blurb_length = @opts[:blurb_length]
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@valid = true
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@page = @opts[:page]
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@search_all_pms = false
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term = term.to_s.dup
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# Removes any zero-width characters from search terms
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term.gsub!(/[\u200B-\u200D\uFEFF]/, "")
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# Replace curly quotes to regular quotes
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term.gsub!(/[\u201c\u201d]/, '"')
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@clean_term = term
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@in_title = false
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term = process_advanced_search!(term)
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if term.present?
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@term = Search.prepare_data(term, Topic === @search_context ? :topic : nil)
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@original_term = Search.escape_string(@term)
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end
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if @search_pms || @search_all_pms || @opts[:type_filter] == "private_messages"
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@opts[:type_filter] = "private_messages"
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@search_context ||= @guardian.user
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unless @search_context.present? && @guardian.can_see_private_messages?(@search_context.id)
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raise Discourse::InvalidAccess.new
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end
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end
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@opts[:type_filter] = "all_topics" if @search_all_topics && @guardian.user
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@results =
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GroupedSearchResults.new(
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type_filter: @opts[:type_filter],
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term: clean_term,
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blurb_term: term,
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search_context: @search_context,
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blurb_length: @blurb_length,
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is_header_search: !use_full_page_limit,
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)
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end
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def limit
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if use_full_page_limit
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Search.per_filter + 1
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else
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Search.per_facet + 1
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end
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end
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def offset
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if @page && @opts[:type_filter].present?
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(@page - 1) * Search.per_filter
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else
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0
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end
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end
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def valid?
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@valid
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end
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def use_full_page_limit
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@opts[:search_type] == :full_page || Topic === @search_context
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end
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def self.execute(term, opts = nil)
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self.new(term, opts).execute
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end
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# Query a term
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def execute(readonly_mode: Discourse.readonly_mode?)
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if log_query?(readonly_mode)
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status, search_log_id =
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SearchLog.log(
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term: @clean_term,
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search_type: @opts[:search_type],
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ip_address: @opts[:ip_address],
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user_id: @opts[:user_id],
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)
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@results.search_log_id = search_log_id unless status == :error
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end
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unless @filters.present? || @opts[:search_for_id]
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min_length = min_search_term_length
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terms = (@term || "").split(/\s(?=(?:[^"]|"[^"]*")*$)/).reject { |t| t.length < min_length }
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if terms.blank?
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@term = ""
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@valid = false
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return
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end
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end
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# If the term is a number or url to a topic, just include that topic
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if @opts[:search_for_id] && %w[topic private_messages all_topics].include?(@results.type_filter)
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if @term =~ /^\d+$/
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single_topic(@term.to_i)
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else
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if route = Discourse.route_for(@term)
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if route[:controller] == "topics" && route[:action] == "show"
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topic_id = (route[:id] || route[:topic_id]).to_i
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single_topic(topic_id) if topic_id > 0
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end
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end
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end
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end
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find_grouped_results if @results.posts.blank?
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if preloaded_topic_custom_fields.present? && @results.posts.present?
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topics = @results.posts.map(&:topic)
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Topic.preload_custom_fields(topics, preloaded_topic_custom_fields)
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end
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Search.preload(@results, self)
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@results
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end
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def self.advanced_order(trigger, &block)
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(@advanced_orders ||= {})[trigger] = block
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end
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def self.advanced_orders
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@advanced_orders
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end
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def self.advanced_filter(trigger, &block)
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(@advanced_filters ||= {})[trigger] = block
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end
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def self.advanced_filters
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@advanced_filters
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end
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def self.custom_topic_eager_load(tables = nil, &block)
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(@custom_topic_eager_loads ||= []) << (tables || block)
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end
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def self.custom_topic_eager_loads
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Array.wrap(@custom_topic_eager_loads)
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end
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advanced_filter(/^in:personal-direct$/i) do |posts|
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if @guardian.user
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posts.joins("LEFT JOIN topic_allowed_groups tg ON posts.topic_id = tg.topic_id").where(
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<<~SQL,
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tg.id IS NULL
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AND posts.topic_id IN (
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SELECT tau.topic_id
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FROM topic_allowed_users tau
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JOIN topic_allowed_users tau2
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ON tau2.topic_id = tau.topic_id
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AND tau2.id != tau.id
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WHERE tau.user_id = :user_id
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GROUP BY tau.topic_id
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HAVING COUNT(*) = 1
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)
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SQL
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user_id: @guardian.user.id,
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)
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end
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end
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advanced_filter(/^in:all-pms$/i) { |posts| posts.private_posts if @guardian.is_admin? }
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advanced_filter(/^in:tagged$/i) do |posts|
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posts.where("EXISTS (SELECT 1 FROM topic_tags WHERE topic_tags.topic_id = posts.topic_id)")
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end
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advanced_filter(/^in:untagged$/i) do |posts|
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posts.joins(
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"LEFT JOIN topic_tags ON
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topic_tags.topic_id = posts.topic_id",
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).where("topic_tags.id IS NULL")
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end
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advanced_filter(/^status:open$/i) do |posts|
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posts.where("NOT topics.closed AND NOT topics.archived")
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end
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advanced_filter(/^status:closed$/i) { |posts| posts.where("topics.closed") }
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advanced_filter(/^status:public$/i) do |posts|
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category_ids = Category.where(read_restricted: false).pluck(:id)
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posts.where("topics.category_id in (?)", category_ids)
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end
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advanced_filter(/^status:archived$/i) { |posts| posts.where("topics.archived") }
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advanced_filter(/^status:noreplies$/i) { |posts| posts.where("topics.posts_count = 1") }
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advanced_filter(/^status:single_user$/i) { |posts| posts.where("topics.participant_count = 1") }
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advanced_filter(/^posts_count:(\d+)$/i) do |posts, match|
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posts.where("topics.posts_count = ?", match.to_i)
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end
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advanced_filter(/^min_post_count:(\d+)$/i) do |posts, match|
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posts.where("topics.posts_count >= ?", match.to_i)
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end
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advanced_filter(/^min_posts:(\d+)$/i) do |posts, match|
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posts.where("topics.posts_count >= ?", match.to_i)
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end
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advanced_filter(/^max_posts:(\d+)$/i) do |posts, match|
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posts.where("topics.posts_count <= ?", match.to_i)
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end
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advanced_filter(/^in:first|^f$/i) { |posts| posts.where("posts.post_number = 1") }
|
||
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||
advanced_filter(/^in:pinned$/i) { |posts| posts.where("topics.pinned_at IS NOT NULL") }
|
||
|
||
advanced_filter(/^in:wiki$/i) { |posts, match| posts.where(wiki: true) }
|
||
|
||
advanced_filter(/^badge:(.*)$/i) do |posts, match|
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||
badge_id = Badge.where("name ilike ? OR id = ?", match, match.to_i).pluck_first(:id)
|
||
if badge_id
|
||
posts.where(
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"posts.user_id IN (SELECT ub.user_id FROM user_badges ub WHERE ub.badge_id = ?)",
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badge_id,
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)
|
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else
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posts.where("1 = 0")
|
||
end
|
||
end
|
||
|
||
def post_action_type_filter(posts, post_action_type)
|
||
posts.where(
|
||
"posts.id IN (
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||
SELECT pa.post_id FROM post_actions pa
|
||
WHERE pa.user_id = ? AND
|
||
pa.post_action_type_id = ? AND
|
||
deleted_at IS NULL
|
||
)",
|
||
@guardian.user.id,
|
||
post_action_type,
|
||
)
|
||
end
|
||
|
||
advanced_filter(/^in:(likes)$/i) do |posts, match|
|
||
post_action_type_filter(posts, PostActionType.types[:like]) if @guardian.user
|
||
end
|
||
|
||
# NOTE: With polymorphic bookmarks it may make sense to possibly expand
|
||
# this at some point, as it only acts on posts at the moment. On the other
|
||
# hand, this may not be necessary, as the user bookmark list has advanced
|
||
# search based on a RegisteredBookmarkable's #search_query method.
|
||
advanced_filter(/^in:(bookmarks)$/i) do |posts, match|
|
||
posts.where(<<~SQL, @guardian.user.id) if @guardian.user
|
||
posts.id IN (
|
||
SELECT bookmarkable_id FROM bookmarks
|
||
WHERE bookmarks.user_id = ? AND bookmarks.bookmarkable_type = 'Post'
|
||
)
|
||
SQL
|
||
end
|
||
|
||
advanced_filter(/^in:posted$/i) do |posts|
|
||
posts.where("posts.user_id = ?", @guardian.user.id) if @guardian.user
|
||
end
|
||
|
||
advanced_filter(/^in:(created|mine)$/i) do |posts|
|
||
posts.where(user_id: @guardian.user.id, post_number: 1) if @guardian.user
|
||
end
|
||
|
||
advanced_filter(/^created:@(.*)$/i) do |posts, match|
|
||
user_id = User.where(username: match.downcase).pluck_first(:id)
|
||
posts.where(user_id: user_id, post_number: 1)
|
||
end
|
||
|
||
advanced_filter(/^in:(watching|tracking)$/i) do |posts, match|
|
||
if @guardian.user
|
||
level = TopicUser.notification_levels[match.downcase.to_sym]
|
||
posts.where(
|
||
"posts.topic_id IN (
|
||
SELECT tu.topic_id FROM topic_users tu
|
||
WHERE tu.user_id = :user_id AND
|
||
tu.notification_level >= :level
|
||
)",
|
||
user_id: @guardian.user.id,
|
||
level: level,
|
||
)
|
||
end
|
||
end
|
||
|
||
advanced_filter(/^in:seen$/i) do |posts|
|
||
if @guardian.user
|
||
posts.joins(
|
||
"INNER JOIN post_timings ON
|
||
post_timings.topic_id = posts.topic_id
|
||
AND post_timings.post_number = posts.post_number
|
||
AND post_timings.user_id = #{ActiveRecord::Base.connection.quote(@guardian.user.id)}
|
||
",
|
||
)
|
||
end
|
||
end
|
||
|
||
advanced_filter(/^in:unseen$/i) do |posts|
|
||
if @guardian.user
|
||
posts.joins(
|
||
"LEFT JOIN post_timings ON
|
||
post_timings.topic_id = posts.topic_id
|
||
AND post_timings.post_number = posts.post_number
|
||
AND post_timings.user_id = #{ActiveRecord::Base.connection.quote(@guardian.user.id)}
|
||
",
|
||
).where("post_timings.user_id IS NULL")
|
||
end
|
||
end
|
||
|
||
advanced_filter(/^with:images$/i) { |posts| posts.where("posts.image_upload_id IS NOT NULL") }
|
||
|
||
advanced_filter(/^category:(.+)$/i) do |posts, match|
|
||
exact = false
|
||
|
||
if match[0] == "="
|
||
exact = true
|
||
match = match[1..-1]
|
||
end
|
||
|
||
category_ids =
|
||
Category.where("slug ilike ? OR name ilike ? OR id = ?", match, match, match.to_i).pluck(:id)
|
||
if category_ids.present?
|
||
category_ids += Category.subcategory_ids(category_ids.first) unless exact
|
||
@category_filter_matched ||= true
|
||
posts.where("topics.category_id IN (?)", category_ids)
|
||
else
|
||
posts.where("1 = 0")
|
||
end
|
||
end
|
||
|
||
advanced_filter(/^\#([\p{L}\p{M}0-9\-:=]+)$/i) do |posts, match|
|
||
category_slug, subcategory_slug = match.to_s.split(":")
|
||
next unless category_slug
|
||
|
||
exact = true
|
||
if category_slug[0] == "="
|
||
category_slug = category_slug[1..-1]
|
||
else
|
||
exact = false
|
||
end
|
||
|
||
category_id =
|
||
if subcategory_slug
|
||
Category
|
||
.where("lower(slug) = ?", subcategory_slug.downcase)
|
||
.where(
|
||
parent_category_id:
|
||
Category.where("lower(slug) = ?", category_slug.downcase).select(:id),
|
||
)
|
||
.pluck_first(:id)
|
||
else
|
||
Category
|
||
.where("lower(slug) = ?", category_slug.downcase)
|
||
.order("case when parent_category_id is null then 0 else 1 end")
|
||
.pluck_first(:id)
|
||
end
|
||
|
||
if category_id
|
||
category_ids = [category_id]
|
||
category_ids += Category.subcategory_ids(category_id) if !exact
|
||
|
||
@category_filter_matched ||= true
|
||
posts.where("topics.category_id IN (?)", category_ids)
|
||
else
|
||
# try a possible tag match
|
||
tag_id = Tag.where_name(category_slug).pluck_first(:id)
|
||
if (tag_id)
|
||
posts.where(<<~SQL, tag_id)
|
||
topics.id IN (
|
||
SELECT DISTINCT(tt.topic_id)
|
||
FROM topic_tags tt
|
||
WHERE tt.tag_id = ?
|
||
)
|
||
SQL
|
||
else
|
||
if tag_group_id = TagGroup.find_id_by_slug(category_slug)
|
||
posts.where(<<~SQL, tag_group_id)
|
||
topics.id IN (
|
||
SELECT DISTINCT(tt.topic_id)
|
||
FROM topic_tags tt
|
||
WHERE tt.tag_id in (
|
||
SELECT tag_id
|
||
FROM tag_group_memberships
|
||
WHERE tag_group_id = ?
|
||
)
|
||
)
|
||
SQL
|
||
|
||
# a bit yucky but we got to add the term back in
|
||
elsif match.to_s.length >= min_search_term_length
|
||
posts.where <<~SQL
|
||
posts.id IN (
|
||
SELECT post_id FROM post_search_data pd1
|
||
WHERE pd1.search_data @@ #{Search.ts_query(term: "##{match}")})
|
||
SQL
|
||
end
|
||
end
|
||
end
|
||
end
|
||
|
||
advanced_filter(/^group:(.+)$/i) do |posts, match|
|
||
group_id =
|
||
Group
|
||
.visible_groups(@guardian.user)
|
||
.members_visible_groups(@guardian.user)
|
||
.where("name ilike ? OR (id = ? AND id > 0)", match, match.to_i)
|
||
.pluck_first(:id)
|
||
|
||
if group_id
|
||
posts.where(
|
||
"posts.user_id IN (select gu.user_id from group_users gu where gu.group_id = ?)",
|
||
group_id,
|
||
)
|
||
else
|
||
posts.where("1 = 0")
|
||
end
|
||
end
|
||
|
||
advanced_filter(/^group_messages:(.+)$/i) do |posts, match|
|
||
group_id =
|
||
Group
|
||
.visible_groups(@guardian.user)
|
||
.members_visible_groups(@guardian.user)
|
||
.where(has_messages: true)
|
||
.where("name ilike ? OR (id = ? AND id > 0)", match, match.to_i)
|
||
.pluck_first(:id)
|
||
|
||
if group_id
|
||
posts.where(
|
||
"posts.topic_id IN (SELECT topic_id FROM topic_allowed_groups WHERE group_id = ?)",
|
||
group_id,
|
||
)
|
||
else
|
||
posts.where("1 = 0")
|
||
end
|
||
end
|
||
|
||
advanced_filter(/^user:(.+)$/i) do |posts, match|
|
||
user_id =
|
||
User
|
||
.where(staged: false)
|
||
.where("username_lower = ? OR id = ?", match.downcase, match.to_i)
|
||
.pluck_first(:id)
|
||
if user_id
|
||
posts.where("posts.user_id = ?", user_id)
|
||
else
|
||
posts.where("1 = 0")
|
||
end
|
||
end
|
||
|
||
advanced_filter(/^\@(\S+)$/i) do |posts, match|
|
||
username = User.normalize_username(match)
|
||
|
||
user_id = User.not_staged.where(username_lower: username).pluck_first(:id)
|
||
|
||
user_id = @guardian.user&.id if !user_id && username == "me"
|
||
|
||
if user_id
|
||
posts.where("posts.user_id = ?", user_id)
|
||
else
|
||
posts.where("1 = 0")
|
||
end
|
||
end
|
||
|
||
advanced_filter(/^before:(.*)$/i) do |posts, match|
|
||
if date = Search.word_to_date(match)
|
||
posts.where("posts.created_at < ?", date)
|
||
else
|
||
posts
|
||
end
|
||
end
|
||
|
||
advanced_filter(/^after:(.*)$/i) do |posts, match|
|
||
if date = Search.word_to_date(match)
|
||
posts.where("posts.created_at > ?", date)
|
||
else
|
||
posts
|
||
end
|
||
end
|
||
|
||
advanced_filter(/^tags?:([\p{L}\p{M}0-9,\-_+]+)$/i) do |posts, match|
|
||
search_tags(posts, match, positive: true)
|
||
end
|
||
|
||
advanced_filter(/^\-tags?:([\p{L}\p{M}0-9,\-_+]+)$/i) do |posts, match|
|
||
search_tags(posts, match, positive: false)
|
||
end
|
||
|
||
advanced_filter(/^filetypes?:([a-zA-Z0-9,\-_]+)$/i) do |posts, match|
|
||
file_extensions = match.split(",").map(&:downcase)
|
||
posts.where(
|
||
"posts.id IN (
|
||
SELECT post_id
|
||
FROM topic_links
|
||
WHERE extension IN (:file_extensions)
|
||
|
||
UNION
|
||
|
||
SELECT upload_references.target_id
|
||
FROM uploads
|
||
JOIN upload_references ON upload_references.target_type = 'Post' AND upload_references.upload_id = uploads.id
|
||
WHERE lower(uploads.extension) IN (:file_extensions)
|
||
)",
|
||
file_extensions: file_extensions,
|
||
)
|
||
end
|
||
|
||
advanced_filter(/^min_views:(\d+)$/i) do |posts, match|
|
||
posts.where("topics.views >= ?", match.to_i)
|
||
end
|
||
|
||
advanced_filter(/^max_views:(\d+)$/i) do |posts, match|
|
||
posts.where("topics.views <= ?", match.to_i)
|
||
end
|
||
|
||
private
|
||
|
||
def search_tags(posts, match, positive:)
|
||
return if match.nil?
|
||
match.downcase!
|
||
modifier = positive ? "" : "NOT"
|
||
|
||
if match.include?("+")
|
||
tags = match.split("+")
|
||
|
||
posts.where(
|
||
"topics.id #{modifier} IN (
|
||
SELECT tt.topic_id
|
||
FROM topic_tags tt, tags
|
||
WHERE tt.tag_id = tags.id
|
||
GROUP BY tt.topic_id
|
||
HAVING to_tsvector(#{default_ts_config}, #{Search.wrap_unaccent("array_to_string(array_agg(lower(tags.name)), ' ')")}) @@ to_tsquery(#{default_ts_config}, #{Search.wrap_unaccent("?")})
|
||
)",
|
||
tags.join("&"),
|
||
)
|
||
else
|
||
tags = match.split(",")
|
||
|
||
posts.where(
|
||
"topics.id #{modifier} IN (
|
||
SELECT DISTINCT(tt.topic_id)
|
||
FROM topic_tags tt, tags
|
||
WHERE tt.tag_id = tags.id AND lower(tags.name) IN (?)
|
||
)",
|
||
tags,
|
||
)
|
||
end
|
||
end
|
||
|
||
def process_advanced_search!(term)
|
||
term
|
||
.to_s
|
||
.scan(/(([^" \t\n\x0B\f\r]+)?(("[^"]+")?))/)
|
||
.to_a
|
||
.map do |(word, _)|
|
||
next if word.blank?
|
||
|
||
found = false
|
||
|
||
Search.advanced_filters.each do |matcher, block|
|
||
cleaned = word.gsub(/["']/, "")
|
||
if cleaned =~ matcher
|
||
(@filters ||= []) << [block, $1]
|
||
found = true
|
||
end
|
||
end
|
||
|
||
if word == "l"
|
||
@order = :latest
|
||
nil
|
||
elsif word =~ /^order:\w+$/i
|
||
@order = word.downcase.gsub("order:", "").to_sym
|
||
nil
|
||
elsif word =~ /^in:title$/i || word == "t"
|
||
@in_title = true
|
||
nil
|
||
elsif word =~ /^topic:(\d+)$/i
|
||
topic_id = $1.to_i
|
||
if topic_id > 1
|
||
topic = Topic.find_by(id: topic_id)
|
||
@search_context = topic if @guardian.can_see?(topic)
|
||
end
|
||
nil
|
||
elsif word =~ /^in:all$/i
|
||
@search_all_topics = true
|
||
nil
|
||
elsif word =~ /^in:personal$/i
|
||
@search_pms = true
|
||
nil
|
||
elsif word =~ /^in:messages$/i
|
||
@search_pms = true
|
||
nil
|
||
elsif word =~ /^in:personal-direct$/i
|
||
@search_pms = true
|
||
nil
|
||
elsif word =~ /^in:all-pms$/i
|
||
@search_all_pms = true
|
||
nil
|
||
elsif word =~ /^group_messages:(.+)$/i
|
||
@search_pms = true
|
||
nil
|
||
elsif word =~ /^personal_messages:(.+)$/i
|
||
if user = User.find_by_username($1)
|
||
@search_pms = true
|
||
@search_context = user
|
||
end
|
||
|
||
nil
|
||
else
|
||
found ? nil : word
|
||
end
|
||
end
|
||
.compact
|
||
.join(" ")
|
||
end
|
||
|
||
def find_grouped_results
|
||
if @results.type_filter.present?
|
||
unless Search.facets.include?(@results.type_filter)
|
||
raise Discourse::InvalidAccess.new("invalid type filter")
|
||
end
|
||
# calling protected methods
|
||
send("#{@results.type_filter}_search")
|
||
else
|
||
if @term.present? && !@search_context
|
||
user_search
|
||
category_search
|
||
tags_search
|
||
groups_search
|
||
end
|
||
topic_search
|
||
end
|
||
|
||
@results
|
||
rescue ActiveRecord::StatementInvalid
|
||
# In the event of a PG:Error return nothing, it is likely they used a foreign language whose
|
||
# locale is not supported by postgres
|
||
end
|
||
|
||
# If we're searching for a single topic
|
||
def single_topic(id)
|
||
if @opts[:restrict_to_archetype].present?
|
||
archetype =
|
||
(
|
||
if @opts[:restrict_to_archetype] == Archetype.default
|
||
Archetype.default
|
||
else
|
||
Archetype.private_message
|
||
end
|
||
)
|
||
|
||
post =
|
||
posts_scope.joins(:topic).find_by(
|
||
"topics.id = :id AND topics.archetype = :archetype AND posts.post_number = 1",
|
||
id: id,
|
||
archetype: archetype,
|
||
)
|
||
else
|
||
post = posts_scope.find_by(topic_id: id, post_number: 1)
|
||
end
|
||
|
||
return nil unless @guardian.can_see?(post)
|
||
|
||
@results.add(post)
|
||
@results
|
||
end
|
||
|
||
def secure_category_ids
|
||
return @secure_category_ids unless @secure_category_ids.nil?
|
||
@secure_category_ids = @guardian.secure_category_ids
|
||
end
|
||
|
||
def category_search
|
||
# scope is leaking onto Category, this is not good and probably a bug in Rails
|
||
# the secure_category_ids will invoke the same method on User, it calls Category.where
|
||
# however the scope from the query below is leaking in to Category, this works around
|
||
# the issue while we figure out what is up in Rails
|
||
secure_category_ids
|
||
|
||
categories =
|
||
Category
|
||
.includes(:category_search_data)
|
||
.where("category_search_data.search_data @@ #{ts_query}")
|
||
.references(:category_search_data)
|
||
.order("topics_month DESC")
|
||
.secured(@guardian)
|
||
.limit(limit)
|
||
|
||
categories.each { |category| @results.add(category) }
|
||
end
|
||
|
||
def user_search
|
||
return if SiteSetting.hide_user_profiles_from_public && !@guardian.user
|
||
|
||
users =
|
||
User
|
||
.includes(:user_search_data)
|
||
.references(:user_search_data)
|
||
.where(active: true)
|
||
.where(staged: false)
|
||
.where("user_search_data.search_data @@ #{ts_query("simple")}")
|
||
.order("CASE WHEN username_lower = '#{@original_term.downcase}' THEN 0 ELSE 1 END")
|
||
.order("last_posted_at DESC")
|
||
.limit(limit)
|
||
|
||
if !SiteSetting.enable_listing_suspended_users_on_search && !@guardian.user&.admin
|
||
users = users.where(suspended_at: nil)
|
||
end
|
||
|
||
users_custom_data_query =
|
||
DB.query(<<~SQL, user_ids: users.pluck(:id), term: "%#{@original_term.downcase}%")
|
||
SELECT user_custom_fields.user_id, user_fields.name, user_custom_fields.value FROM user_custom_fields
|
||
INNER JOIN user_fields ON user_fields.id = REPLACE(user_custom_fields.name, 'user_field_', '')::INTEGER AND user_fields.searchable IS TRUE
|
||
WHERE user_id IN (:user_ids)
|
||
AND user_custom_fields.name LIKE 'user_field_%'
|
||
AND user_custom_fields.value ILIKE :term
|
||
SQL
|
||
users_custom_data =
|
||
users_custom_data_query.reduce({}) do |acc, row|
|
||
acc[row.user_id] = Array.wrap(acc[row.user_id]) << { name: row.name, value: row.value }
|
||
acc
|
||
end
|
||
|
||
users.each do |user|
|
||
user.custom_data = users_custom_data[user.id] || []
|
||
@results.add(user)
|
||
end
|
||
end
|
||
|
||
def groups_search
|
||
groups =
|
||
Group
|
||
.visible_groups(@guardian.user, "name ASC", include_everyone: false)
|
||
.where("name ILIKE :term OR full_name ILIKE :term", term: "%#{@term}%")
|
||
.limit(limit)
|
||
|
||
groups.each { |group| @results.add(group) }
|
||
end
|
||
|
||
def tags_search
|
||
return unless SiteSetting.tagging_enabled
|
||
tags =
|
||
Tag
|
||
.includes(:tag_search_data)
|
||
.where("tag_search_data.search_data @@ #{ts_query}")
|
||
.references(:tag_search_data)
|
||
.order("name asc")
|
||
.limit(limit)
|
||
|
||
hidden_tag_names = DiscourseTagging.hidden_tag_names(@guardian)
|
||
|
||
tags.each { |tag| @results.add(tag) if !hidden_tag_names.include?(tag.name) }
|
||
end
|
||
|
||
def exclude_topics_search
|
||
if @term.present?
|
||
user_search
|
||
category_search
|
||
tags_search
|
||
groups_search
|
||
end
|
||
end
|
||
|
||
PHRASE_MATCH_REGEXP_PATTERN = '"([^"]+)"'
|
||
|
||
def posts_query(limit, type_filter: nil, aggregate_search: false)
|
||
posts =
|
||
Post.where(post_type: Topic.visible_post_types(@guardian.user)).joins(
|
||
:post_search_data,
|
||
:topic,
|
||
)
|
||
|
||
if type_filter != "private_messages"
|
||
posts = posts.joins("LEFT JOIN categories ON categories.id = topics.category_id")
|
||
end
|
||
|
||
is_topic_search = @search_context.present? && @search_context.is_a?(Topic)
|
||
posts = posts.where("topics.visible") unless is_topic_search
|
||
|
||
if type_filter == "private_messages" || (is_topic_search && @search_context.private_message?)
|
||
posts =
|
||
posts.where(
|
||
"topics.archetype = ? AND post_search_data.private_message",
|
||
Archetype.private_message,
|
||
)
|
||
|
||
posts = posts.private_posts_for_user(@guardian.user) unless @guardian.is_admin?
|
||
elsif type_filter == "all_topics"
|
||
private_posts =
|
||
posts.where(
|
||
"topics.archetype = ? AND post_search_data.private_message",
|
||
Archetype.private_message,
|
||
).private_posts_for_user(@guardian.user)
|
||
|
||
posts =
|
||
posts.where(
|
||
"topics.archetype <> ? AND NOT post_search_data.private_message",
|
||
Archetype.private_message,
|
||
).or(private_posts)
|
||
else
|
||
posts =
|
||
posts.where(
|
||
"topics.archetype <> ? AND NOT post_search_data.private_message",
|
||
Archetype.private_message,
|
||
)
|
||
end
|
||
|
||
if @term.present?
|
||
if is_topic_search
|
||
term_without_quote = @term
|
||
term_without_quote = $1 if @term =~ /"(.+)"/
|
||
|
||
term_without_quote = $1 if @term =~ /'(.+)'/
|
||
|
||
posts = posts.joins("JOIN users u ON u.id = posts.user_id")
|
||
posts =
|
||
posts.where(
|
||
"posts.raw || ' ' || u.username || ' ' || COALESCE(u.name, '') ilike ?",
|
||
"%#{term_without_quote}%",
|
||
)
|
||
else
|
||
# A is for title
|
||
# B is for category
|
||
# C is for tags
|
||
# D is for cooked
|
||
weights = @in_title ? "A" : (SiteSetting.tagging_enabled ? "ABCD" : "ABD")
|
||
posts = posts.where(post_number: 1) if @in_title
|
||
posts = posts.where("post_search_data.search_data @@ #{ts_query(weight_filter: weights)}")
|
||
exact_terms = @term.scan(Regexp.new(PHRASE_MATCH_REGEXP_PATTERN)).flatten
|
||
|
||
exact_terms.each do |exact|
|
||
posts =
|
||
posts.where("posts.raw ilike :exact OR topics.title ilike :exact", exact: "%#{exact}%")
|
||
end
|
||
end
|
||
end
|
||
|
||
@filters.each do |block, match|
|
||
if block.arity == 1
|
||
posts = instance_exec(posts, &block) || posts
|
||
else
|
||
posts = instance_exec(posts, match, &block) || posts
|
||
end
|
||
end if @filters
|
||
|
||
# If we have a search context, prioritize those posts first
|
||
posts =
|
||
if @search_context.present?
|
||
if @search_context.is_a?(User)
|
||
if type_filter == "private_messages"
|
||
if @guardian.is_admin? && !@search_all_pms
|
||
posts.private_posts_for_user(@search_context)
|
||
else
|
||
posts
|
||
end
|
||
else
|
||
posts.where("posts.user_id = #{@search_context.id}")
|
||
end
|
||
elsif @search_context.is_a?(Category)
|
||
category_ids =
|
||
Category
|
||
.where(parent_category_id: @search_context.id)
|
||
.pluck(:id)
|
||
.push(@search_context.id)
|
||
|
||
posts.where("topics.category_id in (?)", category_ids)
|
||
elsif is_topic_search
|
||
posts.where("topics.id = ?", @search_context.id).order(
|
||
"posts.post_number #{@order == :latest ? "DESC" : ""}",
|
||
)
|
||
elsif @search_context.is_a?(Tag)
|
||
posts =
|
||
posts.joins("LEFT JOIN topic_tags ON topic_tags.topic_id = topics.id").joins(
|
||
"LEFT JOIN tags ON tags.id = topic_tags.tag_id",
|
||
)
|
||
posts.where("tags.id = ?", @search_context.id)
|
||
end
|
||
else
|
||
posts = categories_ignored(posts) unless @category_filter_matched
|
||
posts
|
||
end
|
||
|
||
if @order == :latest
|
||
if aggregate_search
|
||
posts = posts.order("MAX(posts.created_at) DESC")
|
||
else
|
||
posts = posts.reorder("posts.created_at DESC")
|
||
end
|
||
elsif @order == :latest_topic
|
||
if aggregate_search
|
||
posts = posts.order("MAX(topics.created_at) DESC")
|
||
else
|
||
posts = posts.order("topics.created_at DESC")
|
||
end
|
||
elsif @order == :views
|
||
if aggregate_search
|
||
posts = posts.order("MAX(topics.views) DESC")
|
||
else
|
||
posts = posts.order("topics.views DESC")
|
||
end
|
||
elsif @order == :likes
|
||
if aggregate_search
|
||
posts = posts.order("MAX(posts.like_count) DESC")
|
||
else
|
||
posts = posts.order("posts.like_count DESC")
|
||
end
|
||
elsif !is_topic_search
|
||
rank = <<~SQL
|
||
TS_RANK_CD(
|
||
post_search_data.search_data,
|
||
#{@term.blank? ? "" : ts_query(weight_filter: weights)},
|
||
#{SiteSetting.search_ranking_normalization}|32
|
||
)
|
||
SQL
|
||
|
||
if type_filter != "private_messages"
|
||
category_search_priority = <<~SQL
|
||
(
|
||
CASE categories.search_priority
|
||
WHEN #{Searchable::PRIORITIES[:very_high]}
|
||
THEN 3
|
||
WHEN #{Searchable::PRIORITIES[:very_low]}
|
||
THEN 1
|
||
ELSE 2
|
||
END
|
||
)
|
||
SQL
|
||
|
||
category_priority_weights = <<~SQL
|
||
(
|
||
CASE categories.search_priority
|
||
WHEN #{Searchable::PRIORITIES[:low]}
|
||
THEN #{SiteSetting.category_search_priority_low_weight}
|
||
WHEN #{Searchable::PRIORITIES[:high]}
|
||
THEN #{SiteSetting.category_search_priority_high_weight}
|
||
ELSE
|
||
CASE WHEN topics.closed
|
||
THEN 0.9
|
||
ELSE 1
|
||
END
|
||
END
|
||
)
|
||
SQL
|
||
|
||
data_ranking =
|
||
if @term.blank?
|
||
"(#{category_priority_weights})"
|
||
else
|
||
"(#{rank} * #{category_priority_weights})"
|
||
end
|
||
|
||
posts =
|
||
if aggregate_search
|
||
posts.order("MAX(#{category_search_priority}) DESC", "MAX(#{data_ranking}) DESC")
|
||
else
|
||
posts.order("#{category_search_priority} DESC", "#{data_ranking} DESC")
|
||
end
|
||
end
|
||
|
||
posts = posts.order("topics.bumped_at DESC")
|
||
end
|
||
|
||
if type_filter != "private_messages"
|
||
posts =
|
||
if secure_category_ids.present?
|
||
posts.where(
|
||
"(categories.id IS NULL) OR (NOT categories.read_restricted) OR (categories.id IN (?))",
|
||
secure_category_ids,
|
||
).references(:categories)
|
||
else
|
||
posts.where("(categories.id IS NULL) OR (NOT categories.read_restricted)").references(
|
||
:categories,
|
||
)
|
||
end
|
||
end
|
||
|
||
if @order
|
||
advanced_order = Search.advanced_orders&.fetch(@order, nil)
|
||
posts = advanced_order.call(posts) if advanced_order
|
||
end
|
||
|
||
posts = posts.offset(offset)
|
||
posts.limit(limit)
|
||
end
|
||
|
||
def categories_ignored(posts)
|
||
posts.where(<<~SQL, Searchable::PRIORITIES[:ignore])
|
||
(categories.search_priority IS NULL OR categories.search_priority IS NOT NULL AND categories.search_priority <> ?)
|
||
SQL
|
||
end
|
||
|
||
def self.default_ts_config
|
||
"'#{Search.ts_config}'"
|
||
end
|
||
|
||
def default_ts_config
|
||
self.class.default_ts_config
|
||
end
|
||
|
||
def self.ts_query(term:, ts_config: nil, joiner: nil, weight_filter: nil)
|
||
to_tsquery(ts_config: ts_config, term: set_tsquery_weight_filter(term, weight_filter))
|
||
end
|
||
|
||
def self.to_tsquery(ts_config: nil, term:, joiner: nil)
|
||
ts_config = ActiveRecord::Base.connection.quote(ts_config) if ts_config
|
||
escaped_term = wrap_unaccent("'#{escape_string(term)}'")
|
||
tsquery = "TO_TSQUERY(#{ts_config || default_ts_config}, #{escaped_term})"
|
||
tsquery = "REPLACE(#{tsquery}::text, '&', '#{escape_string(joiner)}')::tsquery" if joiner
|
||
tsquery
|
||
end
|
||
|
||
def self.set_tsquery_weight_filter(term, weight_filter)
|
||
"'#{self.escape_string(term)}':*#{weight_filter}"
|
||
end
|
||
|
||
def self.escape_string(term)
|
||
# HACK: The ’ and other similar characters have to be "unaccented" before
|
||
# it is escaped or the resulting tsqueries will be invalid
|
||
if SiteSetting.search_ignore_accents
|
||
term = term.gsub(/[\u02b9\u02bb\u02bc\u02bd\u02c8\u2018\u2019\u201b\u2032\uff07]/, "'")
|
||
end
|
||
|
||
PG::Connection.escape_string(term).gsub('\\', '\\\\\\')
|
||
end
|
||
|
||
def ts_query(ts_config = nil, weight_filter: nil)
|
||
@ts_query_cache ||= {}
|
||
@ts_query_cache[
|
||
"#{ts_config || default_ts_config} #{@term} #{weight_filter}"
|
||
] ||= Search.ts_query(term: @term, ts_config: ts_config, weight_filter: weight_filter)
|
||
end
|
||
|
||
def wrap_rows(query)
|
||
"SELECT *, row_number() over() row_number FROM (#{query.to_sql}) xxx"
|
||
end
|
||
|
||
def aggregate_post_sql(opts)
|
||
default_opts = { type_filter: opts[:type_filter] }
|
||
|
||
min_id =
|
||
if SiteSetting.search_recent_regular_posts_offset_post_id > 0
|
||
if %w[all_topics private_message].include?(opts[:type_filter])
|
||
0
|
||
else
|
||
SiteSetting.search_recent_regular_posts_offset_post_id
|
||
end
|
||
else
|
||
# This is kept around for backwards compatibility.
|
||
# TODO: Drop this code path after Discourse 2.7 has been released.
|
||
Search.min_post_id
|
||
end
|
||
|
||
min_or_max = @order == :latest ? "max" : "min"
|
||
|
||
query =
|
||
if @order == :likes
|
||
# likes are a pain to aggregate so skip
|
||
posts_query(limit, type_filter: opts[:type_filter]).select("topics.id", "posts.post_number")
|
||
else
|
||
posts_query(limit, aggregate_search: true, type_filter: opts[:type_filter]).select(
|
||
"topics.id",
|
||
"#{min_or_max}(posts.post_number) post_number",
|
||
).group("topics.id")
|
||
end
|
||
|
||
if min_id > 0
|
||
low_set = query.dup.where("post_search_data.post_id < ?", min_id)
|
||
high_set = query.where("post_search_data.post_id >= ?", min_id)
|
||
|
||
return { default: wrap_rows(high_set), remaining: wrap_rows(low_set) }
|
||
end
|
||
|
||
# double wrapping so we get correct row numbers
|
||
{ default: wrap_rows(query) }
|
||
end
|
||
|
||
def aggregate_posts(post_sql)
|
||
return [] unless post_sql
|
||
|
||
posts_scope(posts_eager_loads(Post)).joins(
|
||
"JOIN (#{post_sql}) x ON x.id = posts.topic_id AND x.post_number = posts.post_number",
|
||
).order("row_number")
|
||
end
|
||
|
||
def aggregate_search(opts = {})
|
||
post_sql = aggregate_post_sql(opts)
|
||
|
||
added = 0
|
||
|
||
aggregate_posts(post_sql[:default]).each do |p|
|
||
@results.add(p)
|
||
added += 1
|
||
end
|
||
|
||
aggregate_posts(post_sql[:remaining]).each { |p| @results.add(p) } if added < limit
|
||
end
|
||
|
||
def private_messages_search
|
||
raise Discourse::InvalidAccess.new("anonymous can not search PMs") unless @guardian.user
|
||
|
||
aggregate_search(type_filter: "private_messages")
|
||
end
|
||
|
||
def all_topics_search
|
||
aggregate_search(type_filter: "all_topics")
|
||
end
|
||
|
||
def topic_search
|
||
if @search_context.is_a?(Topic)
|
||
posts =
|
||
posts_scope(posts_eager_loads(posts_query(limit))).where(
|
||
"posts.topic_id = ?",
|
||
@search_context.id,
|
||
)
|
||
|
||
posts.each { |post| @results.add(post) }
|
||
else
|
||
aggregate_search
|
||
end
|
||
end
|
||
|
||
def posts_eager_loads(query)
|
||
query = query.includes(:user, :post_search_data)
|
||
topic_eager_loads = [:category]
|
||
|
||
topic_eager_loads << :tags if SiteSetting.tagging_enabled
|
||
|
||
Search.custom_topic_eager_loads.each do |custom_loads|
|
||
topic_eager_loads.concat(
|
||
custom_loads.is_a?(Array) ? custom_loads : custom_loads.call(search_pms: @search_pms).to_a,
|
||
)
|
||
end
|
||
|
||
query.includes(topic: topic_eager_loads)
|
||
end
|
||
|
||
# Limited for performance reasons since `TS_HEADLINE` is slow when the text
|
||
# document is too long.
|
||
MAX_LENGTH_FOR_HEADLINE = 2500
|
||
|
||
def posts_scope(default_scope = Post.all)
|
||
if SiteSetting.use_pg_headlines_for_excerpt
|
||
search_term = @term.present? ? Search.escape_string(@term) : nil
|
||
ts_config = default_ts_config
|
||
|
||
default_scope
|
||
.joins("INNER JOIN post_search_data pd ON pd.post_id = posts.id")
|
||
.joins("INNER JOIN topics t1 ON t1.id = posts.topic_id")
|
||
.select(
|
||
"TS_HEADLINE(
|
||
#{ts_config},
|
||
t1.fancy_title,
|
||
PLAINTO_TSQUERY(#{ts_config}, '#{search_term}'),
|
||
'StartSel=''<span class=\"#{HIGHLIGHT_CSS_CLASS}\">'', StopSel=''</span>'', HighlightAll=true'
|
||
) AS topic_title_headline",
|
||
"TS_HEADLINE(
|
||
#{ts_config},
|
||
LEFT(
|
||
TS_HEADLINE(
|
||
#{ts_config},
|
||
LEFT(pd.raw_data, #{MAX_LENGTH_FOR_HEADLINE}),
|
||
PLAINTO_TSQUERY(#{ts_config}, '#{search_term}'),
|
||
'ShortWord=0, MaxFragments=1, MinWords=50, MaxWords=51, StartSel='''', StopSel='''''
|
||
),
|
||
#{Search::GroupedSearchResults::BLURB_LENGTH}
|
||
),
|
||
PLAINTO_TSQUERY(#{ts_config}, '#{search_term}'),
|
||
'HighlightAll=true, StartSel=''<span class=\"#{HIGHLIGHT_CSS_CLASS}\">'', StopSel=''</span>'''
|
||
) AS headline",
|
||
"LEFT(pd.raw_data, 50) AS leading_raw_data",
|
||
"RIGHT(pd.raw_data, 50) AS trailing_raw_data",
|
||
default_scope.arel.projections,
|
||
)
|
||
else
|
||
default_scope
|
||
end
|
||
end
|
||
|
||
def log_query?(readonly_mode)
|
||
SiteSetting.log_search_queries? && @opts[:search_type].present? && !readonly_mode &&
|
||
@opts[:type_filter] != "exclude_topics"
|
||
end
|
||
|
||
def min_search_term_length
|
||
return @opts[:min_search_term_length] if @opts[:min_search_term_length]
|
||
|
||
if SiteSetting.search_tokenize_chinese
|
||
return SiteSetting.defaults.get("min_search_term_length", "zh_CN")
|
||
end
|
||
|
||
if SiteSetting.search_tokenize_japanese
|
||
return SiteSetting.defaults.get("min_search_term_length", "ja")
|
||
end
|
||
|
||
SiteSetting.min_search_term_length
|
||
end
|
||
end
|