Commit | Line | Data |
07037f89 |
1 | package DBIx::Class::Relationship::HasMany; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | |
6 | sub has_many { |
7 | my ($class, $rel, $f_class, $cond, $attrs) = @_; |
8 | |
9 | eval "require $f_class"; |
10 | |
dcf8330b |
11 | unless (ref $cond) { |
103647d5 |
12 | my ($pri, $too_many) = $class->primary_columns; |
dcf8330b |
13 | $class->throw( "has_many can only infer join for a single primary key; ${class} has more" ) |
14 | if $too_many; |
07037f89 |
15 | my $f_key; |
103647d5 |
16 | my $f_class_loaded = eval { $f_class->columns }; |
dcf8330b |
17 | my $guess; |
07037f89 |
18 | if (defined $cond && length $cond) { |
19 | $f_key = $cond; |
dcf8330b |
20 | $guess = "caller specified foreign key '$f_key'"; |
07037f89 |
21 | } else { |
22 | $class =~ /([^\:]+)$/; |
dcf8330b |
23 | $f_key = lc $1; # go ahead and guess; best we can do |
24 | $guess = "using our class name '$class' as foreign key"; |
07037f89 |
25 | } |
dcf8330b |
26 | $class->throw("No such column ${f_key} on foreign class ${f_class} ($guess)") |
103647d5 |
27 | if $f_class_loaded && !$f_class->has_column($f_key); |
07037f89 |
28 | $cond = { "foreign.${f_key}" => "self.${pri}" }, |
29 | } |
30 | |
31 | $class->add_relationship($rel, $f_class, $cond, |
32 | { accessor => 'multi', |
33 | join_type => 'LEFT', |
34 | cascade_delete => 1, |
35 | %{$attrs||{}} } ); |
36 | } |
37 | |
38 | 1; |