Text search now properly weighted and ranked
Default order by 'name' removed so that ranking can actually work.
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2 changed files with 23 additions and 4 deletions
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@ -4,7 +4,12 @@ class Package < ActiveRecord::Base
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include PgSearch
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# TODO: Make search weighted on users' rating
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pg_search_scope :general_search,
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:against => [:name, :description, :long_description],
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# :against => [:name, :description, :long_description],
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:against => [
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[:name, 'A'],
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[:description, 'B'],
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[:long_description, 'C']
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],
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:using => {
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:tsearch => {:dictionary => "english"}
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}
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@ -14,9 +19,9 @@ class Package < ActiveRecord::Base
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# screenshot files from disk.
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has_many :screenshots, :inverse_of=>:package, :dependent => :destroy
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default_scope {
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order('name ASC')
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}
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# default_scope {
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# order('name ASC')
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# }
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# Return a query of all packages that have screenshots
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def self.with_screenshots
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@ -0,0 +1,14 @@
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# PostregreSQL text searches are now using weights. So the index has to reflect that.
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class MakeFulltextSearchIndexWeighted < ActiveRecord::Migration
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def change
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execute "drop index packages_fts"
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execute "create index packages_fts on packages using gin((
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setweight( to_tsvector('english', coalesce(\"packages\".\"name\"::text, '')), 'A' )
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setweight( to_tsvector('english', coalesce(\"packages\".\"description\"::text, '')), 'B' )
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setweight( to_tsvector('english', coalesce(\"packages\".\"long_description\"::text, '')), 'C' )
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))"
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end
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end
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