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Schema/Field: add foreign_key_reference builder #62

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Schema/Field: add foreign_key_reference builder #62

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20 changes: 19 additions & 1 deletion lib/SQL/Translator/Schema/Field.pm
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Original file line number Diff line number Diff line change
Expand Up @@ -179,8 +179,10 @@ Get or set the field's foreign key reference;
has foreign_key_reference => (
is => 'rw',
predicate => '_has_foreign_key_reference',
isa => schema_obj('Constraint'),
isa => sub { not defined $_[0] or schema_obj('Constraint')->(@_) },
builder => 1,
weak_ref => 1,
lazy => 1,
);

around foreign_key_reference => sub {
Expand All @@ -197,6 +199,22 @@ around foreign_key_reference => sub {
$self->$orig;
};

sub _build_foreign_key_reference {
my ( $self ) = @_;

if ( my $table = $self->table ) {
for my $c ( $table->get_constraints ) {
if ( $c->type eq FOREIGN_KEY ) {
my %fields = map { $_, 1 } $c->fields;
if ( $fields{ $self->name } ) {
return $c;
}
}
}
}
return undef;
}

=head2 is_auto_increment

Get or set the field's C<is_auto_increment> attribute.
Expand Down