discourse/app/models/user_search.rb

39 lines
1.4 KiB
Ruby

# Searches for a user by username or full text or name (if enabled in SiteSettings)
class UserSearch
def initialize(term, topic_id=nil)
@term = term
@term_like = "#{term.downcase}%"
@topic_id = topic_id
end
def search
users = User.order(User.sql_fragment("CASE WHEN username_lower = ? THEN 0 ELSE 1 END ASC", :term))
if @term.present?
if SiteSetting.enable_names?
users = users.where("username_lower LIKE :term_like OR
TO_TSVECTOR('simple', name) @@
TO_TSQUERY('simple',
REGEXP_REPLACE(
REGEXP_REPLACE(
CAST(PLAINTO_TSQUERY(:term) AS TEXT)
,'\''(?: |$)', ':*''', 'g'),
'''', '', 'g')
)", term: @term, term_like: @term_like)
else
users = users.where("username_lower LIKE :term_like", term_like: @term_like)
end
end
if @topic_id
users = users.joins(User.sql_fragment("LEFT JOIN (SELECT DISTINCT p.user_id FROM POSTS p WHERE topic_id = ?) s ON s.user_id = users.id", @topic_id))
.order("CASE WHEN s.user_id IS NULL THEN 0 ELSE 1 END DESC")
end
users.order("CASE WHEN last_seen_at IS NULL THEN 0 ELSE 1 END DESC, last_seen_at DESC, username ASC")
.limit(20)
end
end