99 lines
2.8 KiB
Ruby
99 lines
2.8 KiB
Ruby
# Searches for a user by username or full text or name (if enabled in SiteSettings)
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class UserSearch
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def initialize(term, opts={})
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@term = term
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@term_like = "#{term.downcase.gsub("_", "\\_")}%"
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@topic_id = opts[:topic_id]
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@topic_allowed_users = opts[:topic_allowed_users]
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@searching_user = opts[:searching_user]
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@limit = opts[:limit] || 20
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end
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def scoped_users
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users = User.where(active: true, staged: false)
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unless @searching_user && @searching_user.staff?
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users = users.not_suspended
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end
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# Only show users who have access to private topic
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if @topic_id && @topic_allowed_users == "true"
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topic = Topic.find_by(id: @topic_id)
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if topic.category && topic.category.read_restricted
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users = users.includes(:secure_categories)
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.where("users.admin = TRUE OR categories.id = ?", topic.category.id)
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.references(:categories)
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end
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end
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users.limit(@limit)
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end
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def filtered_by_term_users
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users = scoped_users
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if @term.present?
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if SiteSetting.enable_names? && @term !~ /[_\.-]/
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query = Search.ts_query(@term, "simple")
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users = users.includes(:user_search_data)
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.references(:user_search_data)
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.where("user_search_data.search_data @@ #{query}")
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.order(User.sql_fragment("CASE WHEN username_lower LIKE ? THEN 0 ELSE 1 END ASC", @term_like))
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else
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users = users.where("username_lower LIKE :term_like", term_like: @term_like)
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end
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end
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users
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end
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def search_ids
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users = Set.new
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# 1. exact username matches
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if @term.present?
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scoped_users.where(username_lower: @term.downcase)
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.limit(@limit)
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.pluck(:id)
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.each { |id| users << id }
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end
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return users.to_a if users.length >= @limit
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# 2. in topic
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if @topic_id
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filtered_by_term_users.where('users.id IN (SELECT p.user_id FROM posts p WHERE topic_id = ?)', @topic_id)
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.order('last_seen_at DESC')
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.limit(@limit - users.length)
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.pluck(:id)
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.each { |id| users << id }
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end
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return users.to_a if users.length >= @limit
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# 3. global matches
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filtered_by_term_users.order('last_seen_at DESC')
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.limit(@limit - users.length)
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.pluck(:id)
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.each { |id| users << id }
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users.to_a
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end
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def search
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ids = search_ids
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return User.where("0=1") if ids.empty?
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User.joins("JOIN (SELECT unnest uid, row_number() OVER () AS rn
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FROM unnest('{#{ids.join(",")}}'::int[])
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) x on uid = users.id")
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.order("rn")
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end
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end
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