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我试图弄清楚为什么我不能元素的内部访问一个祝福参考:PERL |散列中的祝福对象|玫瑰:DB:对象
这是我的模块:
package Test::Node
__PACKAGE__->meta->setup(
table => 'node',
columns => [
id => { type => 'serial', not_null => 1 },
name => { type => 'varchar', length => 128, not_null => 1 },
],
primary_key_columns => [ 'id' ],
relationships =>
[
alias =>
{
type => 'one to many',
class => 'Test::Alia',
column_map => { id => 'asset_id' },
},
],
这是子,我打电话来测试:
sub SearchNode {
my $self = shift;
my ($opts) = shift;
my %query = (name => { like => "$opts->{name}%"});
my %object = (with_objects => ['alias']);
$object{query} = [%query] if $opts->{name};
my $records = Test::Node::Manager->get_node(%object);
my $i = 0;
my $record = {};
$record->{page} = 1;
$record->{total} = 1;
foreach (@$records) {
my %items =(
id => $_->id,
name => $_->name,
alias => $_->alias->alias
);
$record->{rows}[$i] = \%items;
$i++;
}
$record->{records} = $i;
return $record;
}
如果我使用$ _->别名我碰到下面的返回:
$ ./search.pl
$VAR1 = {
'page' => 1,
'records' => 1,
'rows' => [
{
'name' => 'test.localhost.net',
'id' => '1234',
'alias' => bless({
'node_id' => '1234',
'id' => '5678',
'alias' => 'server1.localhost.net'
}, 'Test::Alia')
}
],
'total' => 1
};
如果我使用$ _-> ALIAS->别名,我收到一个错误:
./search.pl
Can't call method "alias" on unblessed reference at /usr/local/lib/perl/Test/Node.pm line 41.
我升技混淆,因为泥头输出显示别名的值被祝福这似乎违背了错误信息。
的$ _标准变量被foreach循环中使用。如果我能够使用$ _->名称访问foreach中的其他属性,为什么别名不起作用? – user1566958 2012-08-02 16:43:17
$ _-> [0] - >别名的作品 – user1566958 2012-08-03 05:15:15