DBIx :: Class :: ResultSet在多个唯一约束上更新或创建

Question

我想知道dbix中的多个唯一约束是否可能update_or_create

来自Cpan:

 my $cd = $schema->resultset('CD')->update_or_create(
    {
      artist => 'Massive Attack',
      title  => 'Mezzanine',
      year   => 1998,
    },
    { key => 'cd_artist_title' }
  );

我想做什么

   my $cd = $schema->resultset('CD')->update_or_create(
    {
      artist => 'Massive Attack',
      title  => 'Mezzanine',
      year   => 1998,
    },
    { key => {'cd_artist_title','year' }
  );

Answer 1

我发现：你必须在控制器中定义唯一约束add_unique_constraint。