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难道是DBIx::Class::Row::set_columns足够聪明来更新预取的子行吗?DBIx :: Class :: Row :: set_columns能做多少魔法?
我试过了,它似乎不是。我可能期待太多的魔法。
我做了这样的事情:
my $data = {
id => 1,
date => '2015-06-27',
# etc.
invoice_lines => [{
id => 101,
# etc.
]},
};
my $rs = $schema->resultset('Invoice')->search(
{ 'me.id' => $id },
{ prefetch => 'invoice_lines' },
)->first;
$rs->set_columns($data);
,并得到了这样的事情:
SELECT me.id, me.date, ..., invoice_lines.id, ... FROM invoices me LEFT
JOIN invoice_lines invoice_lines ON invoice_lines.invoice_id = me.id WHERE (me.id = ?) ORDER BY me.id: '1'
Mojo::Reactor::EV: Read failed: DBIx::Class::Row::get_column(): No such column 'invoice_lines' on MyProg::DB::Schema::Result::Invoice at /home
/chris/stuff/Invoices.pm line 289
它认为 'invoice_lines' 只是另一列,而不是关系。插入数据库或从数据库读取时,这些关系正常工作,所以我没有包含所有的血腥细节。
非常好。谢谢你 - 我会试一试。 –