require 'active_record/schema_dumper' class ActiveRecord::SchemaDumper def foreign_keys_with_default_name(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 parts << "name: #{foreign_key.name.inspect}" 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 alias_method_chain :foreign_keys, :default_name end