Module: Fuzzily::Migration

Defined in:
lib/fuzzily/migration.rb

Class Method Summary collapse

Class Method Details

.extended(by) ⇒ Object 



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# File 'lib/fuzzily/migration.rb', line 5

def self.extended(by)
  by.singleton_class.class_eval do
    def trigrams_table_name=(custom_name)
      @trigrams_table_name = custom_name
    end

    def trigrams_table_name
      @trigrams_table_name ||= :trigrams
    end

    def trigrams_owner_id_column_type=(custom_type)
      @trigrams_owner_id_column_type = custom_type
    end

    def trigrams_owner_id_column_type
      @trigrams_owner_id_column_type ||= :integer
    end

    def up
      create_table trigrams_table_name do |t|
        t.string  :trigram, :limit => 3
        t.integer :score,   :limit => 2
        t.send trigrams_owner_id_column_type, :owner_id
        t.string  :owner_type
        t.string  :fuzzy_field
      end

      # owner_id goes first as we'll GROUP BY that
      add_index trigrams_table_name,
        [:owner_id, :owner_type, :fuzzy_field, :trigram, :score],
        :name => :index_for_match
      add_index trigrams_table_name,
        [:owner_id, :owner_type],
        :name => :index_by_owner
    end

    def down
      drop_table trigrams_table_name
    end
  end
end