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我有以下架构：

package Food::Schema::Result::Order;

# Created by DBIx::Class::Schema::Loader
# DO NOT MODIFY THE FIRST PART OF THIS FILE

use strict;
use warnings;

use base 'DBIx::Class::Core';


=head1 NAME

Food::Schema::Result::Order

=cut

__PACKAGE__->table("orders");

=head1 ACCESSORS

=head2 id

  data_type: 'integer'
  is_auto_increment: 1
  is_nullable: 0

=head2 company_id

  data_type: 'integer'
  is_nullable: 1

=head2 user_id

  data_type: 'integer'
  is_nullable: 1

=head2 total

  data_type: 'float'
  is_nullable: 1

=head2 money_id

  data_type: 'integer'
  is_nullable: 1

=head2 created_at

  data_type: 'datetime'
  datetime_undef_if_invalid: 1
  is_nullable: 1

=head2 updated_at

  data_type: 'bigint'
  is_nullable: 1

=head2 status

  data_type: 'varchar'
  is_nullable: 1
  size: 10

=cut

__PACKAGE__->add_columns(
  "id",
  { data_type => "integer", is_auto_increment => 1, is_nullable => 0 },
  "company_id",
  { data_type => "integer", is_nullable => 1 },
  "user_id",
  { data_type => "integer", is_nullable => 1 },
  "total",
  { data_type => "float", is_nullable => 1 },
  "money_id",
  { data_type => "integer", is_nullable => 1 },
  "created_at",
  {
    data_type => "datetime",
    datetime_undef_if_invalid => 1,
    is_nullable => 1,
  },
  "updated_at",
  { data_type => "bigint", is_nullable => 1 },
  "status",
  { data_type => "varchar", is_nullable => 1, size => 10 },
);
__PACKAGE__->set_primary_key("id");


# Created by DBIx::Class::Schema::Loader v0.07010 @ 2011-12-29 12:31:26
# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:TZMuN6qiqXlDLR361KLqWg
use DateTime;
__PACKAGE__->remove_column('created_at');
__PACKAGE__->add_columns(
  "created_at",
  {
    data_type => "datetime",
    datetime_undef_if_invalid => 1,
    is_nullable => 0,
    accessor => '_created_at',
  },
);



__PACKAGE__->belongs_to(company => 'Food::Schema::Result::Company', 'company_id');
__PACKAGE__->belongs_to(user => 'Food::Schema::Result::User', 'user_id');
__PACKAGE__->has_many(order_lines => 'Food::Schema::Result::OrderLine', 'order_id');
__PACKAGE__->many_to_many(foods => 'order_lines', 'food');
__PACKAGE__->many_to_many(menus => 'order_lines', 'menu');

sub created_at{
 my ($self, $value) = @_;

 $self->_created_at( $self->_created_at() || DateTime::Format::MySQL->format_datetime( DateTime->now() ) ); 

 return $self->_created_at();
};

sub new{
 my ($self, $attrs) = @_;

 $self->created_at();

 my $new = $self->next::method($attrs);
 return $new;
}

1;

我尝试find_or_create根据一些属性下订单，例如：

   my $order = $self->app->model->resultset('Order')->find_or_create({
                company_id => $self->param('company_id'),
                status     => 'open',
                user_id    => $self->app->sessions->{user}->id(),
   });

我得到了错误DBIx::Class::Row::get_column(): Can't fetch data as class method

现在，如果我从 中排除该status列find_or_create，它会按预期工作（但不是按需要 - 这就是我想在子句中添加更多列的原因）。

如果我在 中添加任何其他列find_or_create，我会收到该错误。

有谁知道这是一个错误还是预期的行为，我如何find_or_create根据更多的列值订购？

编辑：

看起来这不是一个错误 - 我没有new以正确的方式覆盖该方法。

该new方法必须是这样的：

sub new{
 my ($self, $attrs) = @_;

 $attrs->{created_at} = DateTime::Format::MySQL->format_datetime( DateTime->now() );

 my $new = $self->next::method($attrs);

 return $new;
}

经过“几个”小时的调试后，我设法解决了这个问题。

感谢所有花时间阅读并试图弄清楚为什么这不起作用的人。

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