wiki pages: change tsvector update trigger to not use test_parser.

Change the wiki_pages tsvector_update_trigger to use
`pg_catalog.english` instead of `public.danbooru`. This changes how wiki
page text is parsed for full-text search to use the standard English
parser instead of test_parser. This is to prepare for dropping
test_parser. Using test_parser here was wrong anyway because it meant
that punctuation wasn't removed from words when indexing wiki pages for
full-text search.

app/logical/concerns/searchable.rb

@@ -194,7 +194,7 @@ module Searchable
     end
   end
 
-  def text_attribute_matches(attribute, value, index_column: nil, ts_config: "english")
+  def text_attribute_matches(attribute, value, index_column: nil)
     return all unless value.present?
 
     column = column_for_attribute(attribute)
@@ -203,9 +203,9 @@ module Searchable
     if value =~ /\*/
       where("lower(#{qualified_column}) LIKE :value ESCAPE E'\\\\'", value: value.mb_chars.downcase.to_escaped_for_sql_like)
     elsif index_column.present?
-      where("#{table_name}.#{index_column} @@ plainto_tsquery(:ts_config, :value)", ts_config: ts_config, value: value)
+      where("#{table_name}.#{index_column} @@ plainto_tsquery('english', :value)", value: value)
     else
-      where("to_tsvector(:ts_config, #{qualified_column}) @@ plainto_tsquery(:ts_config, :value)", ts_config: ts_config, value: value)
+      where("to_tsvector('english', #{qualified_column}) @@ plainto_tsquery('english', :value)", value: value)
     end
   end
 

app/models/wiki_page.rb

@@ -70,7 +70,7 @@ class WikiPage < ApplicationRecord
 
     def search(params = {})
       q = search_attributes(params, :id, :created_at, :updated_at, :is_locked, :is_deleted, :body, :title, :other_names, :tag, :artist, :dtext_links)
-      q = q.text_attribute_matches(:body, params[:body_matches], index_column: :body_index, ts_config: "danbooru")
+      q = q.text_attribute_matches(:body, params[:body_matches], index_column: :body_index)
 
       if params[:title_normalize].present?
         q = q.where_like(:title, normalize_title(params[:title_normalize]))

db/migrate/20211011044400_change_ts_vector_trigger_on_wiki_pages.rb

@@ -0,0 +1,11 @@
+class ChangeTsVectorTriggerOnWikiPages < ActiveRecord::Migration[6.1]
+  def up
+    execute("DROP TRIGGER trigger_wiki_pages_on_update ON wiki_pages")
+    execute("CREATE TRIGGER trigger_wiki_pages_on_update BEFORE INSERT OR UPDATE ON public.wiki_pages FOR EACH ROW EXECUTE FUNCTION tsvector_update_trigger('body_index', 'pg_catalog.english', 'body', 'title')")
+  end
+
+  def down
+    execute("DROP TRIGGER trigger_wiki_pages_on_update ON wiki_pages")
+    execute("CREATE TRIGGER trigger_wiki_pages_on_update BEFORE INSERT OR UPDATE ON public.wiki_pages FOR EACH ROW EXECUTE FUNCTION tsvector_update_trigger('body_index', 'public.danbooru', 'body', 'title')")
+  end
+end

db/structure.sql

@@ -4801,7 +4801,7 @@ CREATE TRIGGER trigger_posts_on_tag_index_update BEFORE INSERT OR UPDATE ON publ
 -- Name: wiki_pages trigger_wiki_pages_on_update; Type: TRIGGER; Schema: public; Owner: -
 --
 
-CREATE TRIGGER trigger_wiki_pages_on_update BEFORE INSERT OR UPDATE ON public.wiki_pages FOR EACH ROW EXECUTE FUNCTION tsvector_update_trigger('body_index', 'public.danbooru', 'body', 'title');
+CREATE TRIGGER trigger_wiki_pages_on_update BEFORE INSERT OR UPDATE ON public.wiki_pages FOR EACH ROW EXECUTE FUNCTION tsvector_update_trigger('body_index', 'pg_catalog.english', 'body', 'title');
 
 
 --
@@ -5059,6 +5059,7 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20210926123414'),
 ('20210926125826'),
 ('20211008091234'),
-('20211010181657');
+('20211010181657'),
+('20211011044400');