foreign_keys

# File activerecord/lib/active_record/schema_dumper.rb, line 197
      def foreign_keys(table, stream)
        if (foreign_keys = @connection.foreign_keys(table)).any?
          add_foreign_key_statements = foreign_keys.map do |foreign_key|
            parts = [
              "add_foreign_key #{remove_prefix_and_suffix(foreign_key.from_table).inspect}",
              remove_prefix_and_suffix(foreign_key.to_table).inspect,
            ]

            if foreign_key.column != @connection.foreign_key_column_for(foreign_key.to_table)
              parts << "column: #{foreign_key.column.inspect}"
            end

            if foreign_key.custom_primary_key?
              parts << "primary_key: #{foreign_key.primary_key.inspect}"
            end

            if foreign_key.name !~ /^fk_rails_[0-9a-f]{10}$/
              parts << "name: #{foreign_key.name.inspect}"
            end

            parts << "on_update: #{foreign_key.on_update.inspect}" if foreign_key.on_update
            parts << "on_delete: #{foreign_key.on_delete.inspect}" if foreign_key.on_delete

            "  #{parts.join(', ')}"
          end

          stream.puts add_foreign_key_statements.sort.join("\n")
        end
      end