004672aa6c
* Sort results by the name * Switch search method to simple `LIKE` matching instead of tsvector/tsquery Previously we used scores from ts_rank_cd() to sort results, but it didn't work because the function returns same score for all results. It's not for calculate similarity of single words. Sometimes this bug even push out exact matching tag from results. Additionally, PostgreSQL supports prefix searching with standard btree index. Using it offers simpler code, but also less index size and some speed.
13 lines
391 B
Ruby
13 lines
391 B
Ruby
class ChangeTagSearchIndexToBtree < ActiveRecord::Migration[5.1]
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def up
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remove_index :tags, name: :hashtag_search_index
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execute 'CREATE INDEX hashtag_search_index ON tags (name text_pattern_ops);'
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end
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def down
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remove_index :tags, name: :hashtag_search_index
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execute 'CREATE INDEX hashtag_search_index ON tags USING gin(to_tsvector(\'simple\', tags.name));'
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end
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end
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