method

extract_foreign_key_action

Importance_0
v4.2.7 - Show latest stable - 0 notes - Class: AbstractMysqlAdapter
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extract_foreign_key_action(structure, name, action) private

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# File activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 900
      def extract_foreign_key_action(structure, name, action) # :nodoc:
        if structure =~ /CONSTRAINT #{quote_column_name(name)} FOREIGN KEY .* REFERENCES .* ON #{action} (CASCADE|SET NULL|RESTRICT)/
          case $1
          when 'CASCADE'; :cascade
          when 'SET NULL'; :nullify
          end
        end
      end
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