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metu.life/db/migrate/20190726175042_add_case_ins...

15 lines
585 B

class AddCaseInsensitiveIndexToTags < ActiveRecord::Migration[5.2]
disable_ddl_transaction!
def up
safety_assured { execute 'CREATE UNIQUE INDEX CONCURRENTLY index_tags_on_name_lower ON tags (lower(name))' }
remove_index :tags, name: 'index_tags_on_name'
remove_index :tags, name: 'hashtag_search_index'
end
def down
add_index :tags, :name, unique: true, algorithm: :concurrently
safety_assured { execute 'CREATE INDEX CONCURRENTLY hashtag_search_index ON tags (name text_pattern_ops)' }
remove_index :tags, name: 'index_tags_on_name_lower'
end
end