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method

extract_foreign_key_action

rails latest stable - Class: ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v4.2.9) is shown here.

extract_foreign_key_action(structure, name, action)
private

No documentation available.

# 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