discourse/app/controllers/list_controller.rb

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# frozen_string_literal: true
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class ListController < ApplicationController
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include TopicListResponder
include TopicQueryParams
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skip_before_action :check_xhr
before_action :set_category, only: [
:category_default,
# filtered topics lists
Discourse.filters.map { |f| :"category_#{f}" },
Discourse.filters.map { |f| :"category_none_#{f}" },
# top summaries
:category_top,
:category_none_top,
# top pages (ie. with a period)
TopTopic.periods.map { |p| :"category_top_#{p}" },
TopTopic.periods.map { |p| :"category_none_top_#{p}" },
# category feeds
:category_feed,
].flatten
before_action :ensure_logged_in, except: [
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:topics_by,
# anonymous filters
Discourse.anonymous_filters,
Discourse.anonymous_filters.map { |f| "#{f}_feed" },
# anonymous categorized filters
:category_default,
Discourse.anonymous_filters.map { |f| :"category_#{f}" },
Discourse.anonymous_filters.map { |f| :"category_none_#{f}" },
# category feeds
:category_feed,
# user topics feed
:user_topics_feed,
# top summaries
:top,
:category_top,
:category_none_top,
# top pages (ie. with a period)
TopTopic.periods.map { |p| :"top_#{p}" },
TopTopic.periods.map { |p| :"top_#{p}_feed" },
TopTopic.periods.map { |p| :"category_top_#{p}" },
TopTopic.periods.map { |p| :"category_none_top_#{p}" },
:group_topics
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].flatten
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# Create our filters
Discourse.filters.each do |filter|
define_method(filter) do |options = nil|
list_opts = build_topic_list_options
list_opts.merge!(options) if options
user = list_target_user
if params[:category].blank? && filter == :latest && !SiteSetting.show_category_definitions_in_topic_lists
list_opts[:no_definitions] = true
end
list = TopicQuery.new(user, list_opts).public_send("list_#{filter}")
if guardian.can_create_shared_draft? && @category.present?
if @category.id == SiteSetting.shared_drafts_category.to_i
# On shared drafts, show the destination category
list.topics.each do |t|
t.includes_destination_category = t.shared_draft.present?
end
else
# When viewing a non-shared draft category, find topics whose
# destination are this category
shared_drafts = TopicQuery.new(
user,
category: SiteSetting.shared_drafts_category,
destination_category_id: list_opts[:category]
).list_latest
if shared_drafts.present? && shared_drafts.topics.present?
list.shared_drafts = shared_drafts.topics
end
end
end
list.more_topics_url = construct_url_with(:next, list_opts)
list.prev_topics_url = construct_url_with(:prev, list_opts)
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if Discourse.anonymous_filters.include?(filter)
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@description = SiteSetting.site_description
@rss = filter
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# Note the first is the default and we don't add a title
if (filter.to_s != current_homepage) && use_crawler_layout?
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filter_title = I18n.t("js.filters.#{filter.to_s}.title", count: 0)
if list_opts[:category] && @category
@title = I18n.t('js.filters.with_category', filter: filter_title, category: @category.name)
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else
@title = I18n.t('js.filters.with_topics', filter: filter_title)
end
@title << " - #{SiteSetting.title}"
elsif @category.blank? && (filter.to_s == current_homepage) && SiteSetting.short_site_description.present?
@title = "#{SiteSetting.title} - #{SiteSetting.short_site_description}"
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end
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end
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respond_with_list(list)
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end
define_method("category_#{filter}") do
canonical_url "#{Discourse.base_url_no_prefix}#{@category.url}"
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self.public_send(filter, category: @category.id)
end
define_method("category_none_#{filter}") do
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self.public_send(filter, category: @category.id, no_subcategories: true)
end
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end
def category_default
canonical_url "#{Discourse.base_url_no_prefix}#{@category.url}"
view_method = @category.default_view
view_method = 'latest' unless %w(latest top).include?(view_method)
self.public_send(view_method, category: @category.id)
end
def topics_by
list_opts = build_topic_list_options
target_user = fetch_user_from_params({ include_inactive: current_user.try(:staff?) || (current_user && SiteSetting.show_inactive_accounts) }, [:user_stat, :user_option])
ensure_can_see_profile!(target_user)
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list = generate_list_for("topics_by", target_user, list_opts)
list.more_topics_url = construct_url_with(:next, list_opts)
list.prev_topics_url = construct_url_with(:prev, list_opts)
respond_with_list(list)
end
def group_topics
group = Group.find_by(name: params[:group_name])
raise Discourse::NotFound unless group
guardian.ensure_can_see_group!(group)
guardian.ensure_can_see_group_members!(group)
list_opts = build_topic_list_options
list = generate_list_for("group_topics", group, list_opts)
list.more_topics_url = construct_url_with(:next, list_opts)
list.prev_topics_url = construct_url_with(:prev, list_opts)
respond_with_list(list)
end
def self.generate_message_route(action)
case action
when :private_messages_tag
define_method("#{action}") do
raise Discourse::NotFound if !guardian.can_tag_pms?
message_route(action)
end
when :private_messages_group, :private_messages_group_archive
define_method("#{action}") do
group = Group.find_by(name: params[:group_name])
raise Discourse::NotFound if !group
raise Discourse::NotFound unless guardian.can_see_group_messages?(group)
message_route(action)
end
else
define_method("#{action}") do
message_route(action)
end
end
end
def message_route(action)
target_user = fetch_user_from_params({ include_inactive: current_user.try(:staff?) }, [:user_stat, :user_option])
guardian.ensure_can_see_private_messages!(target_user.id)
list_opts = build_topic_list_options
list = generate_list_for(action.to_s, target_user, list_opts)
url_prefix = "topics"
list.more_topics_url = construct_url_with(:next, list_opts, url_prefix)
list.prev_topics_url = construct_url_with(:prev, list_opts, url_prefix)
respond_with_list(list)
end
%i{
private_messages
private_messages_sent
private_messages_unread
private_messages_archive
private_messages_group
private_messages_group_archive
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private_messages_tag
}.each do |action|
generate_message_route(action)
end
def latest_feed
discourse_expires_in 1.minute
options = { order: 'created' }.merge(build_topic_list_options)
@title = "#{SiteSetting.title} - #{I18n.t("rss_description.latest")}"
@link = "#{Discourse.base_url}/latest"
@atom_link = "#{Discourse.base_url}/latest.rss"
@description = I18n.t("rss_description.latest")
@topic_list = TopicQuery.new(nil, options).list_latest
render 'list', formats: [:rss]
end
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def top_feed
discourse_expires_in 1.minute
@title = "#{SiteSetting.title} - #{I18n.t("rss_description.top")}"
@link = "#{Discourse.base_url}/top"
@atom_link = "#{Discourse.base_url}/top.rss"
@description = I18n.t("rss_description.top")
@topic_list = TopicQuery.new(nil).list_top_for(SiteSetting.top_page_default_timeframe.to_sym)
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render 'list', formats: [:rss]
end
def category_feed
guardian.ensure_can_see!(@category)
discourse_expires_in 1.minute
@title = "#{@category.name} - #{SiteSetting.title}"
@link = "#{Discourse.base_url_no_prefix}#{@category.url}"
@atom_link = "#{Discourse.base_url_no_prefix}#{@category.url}.rss"
@description = "#{I18n.t('topics_in_category', category: @category.name)} #{@category.description}"
@topic_list = TopicQuery.new(current_user).list_new_in_category(@category)
render 'list', formats: [:rss]
end
def user_topics_feed
discourse_expires_in 1.minute
target_user = fetch_user_from_params
ensure_can_see_profile!(target_user)
@title = "#{SiteSetting.title} - #{I18n.t("rss_description.user_topics", username: target_user.username)}"
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@link = "#{Discourse.base_url}/u/#{target_user.username}/activity/topics"
@atom_link = "#{Discourse.base_url}/u/#{target_user.username}/activity/topics.rss"
@description = I18n.t("rss_description.user_topics", username: target_user.username)
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@topic_list = TopicQuery
.new(nil, order: 'created')
.public_send("list_topics_by", target_user)
render 'list', formats: [:rss]
end
def top(options = nil)
options ||= {}
period = ListController.best_period_for(current_user.try(:previous_visit_at), options[:category])
public_send("top_#{period}", options)
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end
def category_top
top(category: @category.id)
end
def category_none_top
top(category: @category.id, no_subcategories: true)
end
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TopTopic.periods.each do |period|
define_method("top_#{period}") do |options = nil|
top_options = build_topic_list_options
top_options.merge!(options) if options
top_options[:per_page] = SiteSetting.topics_per_period_in_top_page
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user = list_target_user
list = TopicQuery.new(user, top_options).list_top_for(period)
list.for_period = period
list.more_topics_url = construct_url_with(:next, top_options)
list.prev_topics_url = construct_url_with(:prev, top_options)
@rss = "top_#{period}"
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if use_crawler_layout?
@title = I18n.t("js.filters.top.#{period}.title") + " - #{SiteSetting.title}"
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end
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respond_with_list(list)
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end
define_method("category_top_#{period}") do
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self.public_send("top_#{period}", category: @category.id)
end
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define_method("category_none_top_#{period}") do
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self.public_send("top_#{period}",
category: @category.id,
no_subcategories: true
)
end
# rss feed
define_method("top_#{period}_feed") do |options = nil|
discourse_expires_in 1.minute
@description = I18n.t("rss_description.top_#{period}")
@title = "#{SiteSetting.title} - #{@description}"
@link = "#{Discourse.base_url}/top/#{period}"
@atom_link = "#{Discourse.base_url}/top/#{period}.rss"
@topic_list = TopicQuery.new(nil).list_top_for(period)
render 'list', formats: [:rss]
end
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end
protected
def next_page_params
page_params.merge(page: params[:page].to_i + 1)
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end
def prev_page_params
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pg = params[:page].to_i
if pg > 1
page_params.merge(page: pg - 1)
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else
page_params.merge(page: nil)
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end
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end
private
def page_params
route_params = { format: 'json' }
if @category.present?
slug_path = @category.slug_path
route_params[:category_slug_path_with_id] =
(slug_path + [@category.id.to_s]).join("/")
end
route_params[:username] = UrlHelper.encode_component(params[:username]) if params[:username].present?
route_params
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end
def set_category
category_slug_path_with_id = params.require(:category_slug_path_with_id)
@category = Category.find_by_slug_path_with_id(category_slug_path_with_id)
if @category.nil?
raise Discourse::NotFound.new("category not found", check_permalinks: true)
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end
params[:category] = @category.id.to_s
if !guardian.can_see?(@category)
if SiteSetting.detailed_404
raise Discourse::InvalidAccess
else
raise Discourse::NotFound
end
end
# Check if the category slug is incorrect and redirect to a link containing
# the correct one.
current_slug = category_slug_path_with_id
if SiteSetting.slug_generation_method == "encoded"
current_slug = current_slug.split("/").map { |slug| CGI.escape(slug) }.join("/")
end
real_slug = @category.full_slug("/")
if CGI.unescape(current_slug) != CGI.unescape(real_slug)
url = request.fullpath.gsub(current_slug, real_slug)
if ActionController::Base.config.relative_url_root
url = url.sub(ActionController::Base.config.relative_url_root, "")
end
return redirect_to path(url), status: 301
end
@description_meta = if @category.uncategorized?
I18n.t("category.uncategorized_description", locale: SiteSetting.default_locale)
elsif @category.description_text.present?
@category.description_text
else
SiteSetting.site_description
end
if use_crawler_layout?
@subcategories = @category.subcategories.select { |c| guardian.can_see?(c) }
end
end
def list_target_user
if params[:user_id] && guardian.is_staff?
User.find(params[:user_id].to_i)
else
current_user
end
end
def generate_list_for(action, target_user, opts)
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TopicQuery.new(current_user, opts).public_send("list_#{action}", target_user)
end
def construct_url_with(action, opts, url_prefix = nil)
method = url_prefix.blank? ? "#{action_name}_path" : "#{url_prefix}_#{action_name}_path"
page_params =
case action
when :prev
prev_page_params
when :next
next_page_params
else
raise "unreachable"
end
opts = opts.dup
if SiteSetting.unicode_usernames && opts[:group_name]
opts[:group_name] = UrlHelper.encode_component(opts[:group_name])
end
opts.delete(:category) if page_params.include?(:category_slug_path_with_id)
public_send(method, opts.merge(page_params)).sub('.json?', '?')
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end
def ensure_can_see_profile!(target_user = nil)
raise Discourse::NotFound unless guardian.can_see_profile?(target_user)
end
def self.best_period_for(previous_visit_at, category_id = nil)
default_period = ((category_id && Category.where(id: category_id).pluck_first(:default_top_period)) ||
SiteSetting.top_page_default_timeframe).to_sym
best_period_with_topics_for(previous_visit_at, category_id, default_period) || default_period
end
def self.best_period_with_topics_for(previous_visit_at, category_id = nil, default_period = SiteSetting.top_page_default_timeframe)
best_periods_for(previous_visit_at, default_period.to_sym).find do |period|
top_topics = TopTopic.where("#{period}_score > 0")
top_topics = top_topics.joins(:topic).where("topics.category_id = ?", category_id) if category_id
top_topics = top_topics.limit(SiteSetting.topics_per_period_in_top_page)
top_topics.count == SiteSetting.topics_per_period_in_top_page
end
end
def self.best_periods_for(date, default_period = :all)
return [default_period, :all].uniq unless date
periods = []
periods << :daily if date > (1.week + 1.day).ago
periods << :weekly if date > (1.month + 1.week).ago
periods << :monthly if date > (3.months + 3.weeks).ago
periods << :quarterly if date > (1.year + 1.month).ago
periods << :yearly if date > 3.years.ago
periods << :all
periods
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end
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end