4b768e2f42
Otherwise this will annoyingly raise an exception when fetching results if offset exceeds max_matches
114 lines
2.5 KiB
Ruby
114 lines
2.5 KiB
Ruby
class Search
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include ActiveModel::Validations
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include ActiveModel::Conversion
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include ActiveModel::AttributeMethods
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extend ActiveModel::Naming
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attr_accessor :q, :what, :order
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attr_accessor :results, :page, :total_results, :per_page
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validates_length_of :q, :minimum => 2
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def initialize
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@q = ""
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@what = "all"
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@order = "relevance"
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@page = 1
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@per_page = 20
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@results = []
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@total_results = -1
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end
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def max_matches
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ThinkingSphinx::Configuration.instance.settings["max_matches"] || 1000
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end
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def persisted?
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false
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end
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def to_url_params
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[ :q, :what, :order ].map{|p| "#{p}=#{CGI.escape(self.send(p).to_s)}"
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}.join("&")
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end
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def page_count
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total = self.total_results.to_i
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if total == -1 || total > self.max_matches
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total = self.max_matches
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end
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((total - 1) / self.per_page.to_i) + 1
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end
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def search_for_user!(user)
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opts = {
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:ranker => :bm25,
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:page => [ self.page, self.page_count ].min,
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:per_page => self.per_page,
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:include => [ :story, :user ],
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}
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if order == "newest"
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opts[:order] = "created_at DESC"
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elsif order == "points"
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opts[:order] = "score DESC"
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end
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opts[:classes] = case what
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when "all"
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[ Story, Comment ]
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when "comments"
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[ Comment ]
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when "stories"
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[ Story ]
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else
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[]
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end
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# escape sphinx special chars (using Riddle.escape removes boolean support)
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query = self.q.gsub(/([\/~"])/, '\\\\\1')
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# go go gadget search
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self.results = []
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self.total_results = 0
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begin
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self.results = ThinkingSphinx.search query, opts
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self.total_results = self.results.total_entries
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rescue => e
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Rails.logger.info "Error from Sphinx: #{e.inspect}"
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end
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if self.page > self.page_count
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self.page = self.page_count
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end
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# bind votes for both types
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if opts[:classes].include?(Comment) && user
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votes = Vote.comment_votes_by_user_for_comment_ids_hash(user.id,
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self.results.select{|r| r.class == Comment }.map{|c| c.id })
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self.results.each do |r|
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if r.class == Comment && votes[r.id]
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r.current_vote = votes[r.id]
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end
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end
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end
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if opts[:classes].include?(Story) && user
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votes = Vote.story_votes_by_user_for_story_ids_hash(user.id,
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self.results.select{|r| r.class == Story }.map{|s| s.id })
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self.results.each do |r|
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if r.class == Story && votes[r.id]
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r.vote = votes[r.id][:vote]
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end
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end
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end
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end
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end
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