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lib/DBIx/Class/CDBICompat/Relationships.pm  view on Meta::CPAN

   unless $self->has_column($col);
  $self->ensure_class_loaded($f_class);

  my $rel_info;

  # Class::DBI allows Non database has_a with implicit deflate and inflate
  # Hopefully the following will catch Non-database tables.
  if( !$f_class->isa('DBIx::Class::Row') and !$f_class->isa('Class::DBI::Row') ) {
    $args{'inflate'} ||= sub { $f_class->new(shift) }; # implicit inflate by calling new
    $args{'deflate'} ||= sub { shift() . '' }; # implicit deflate by stringification
  }

  if ($args{'inflate'} || $args{'deflate'}) { # Non-database has_a
    if (!ref $args{'inflate'}) {
      my $meth = $args{'inflate'};
      $args{'inflate'} = sub { $f_class->$meth(shift); };
    }
    if (!ref $args{'deflate'}) {
      my $meth = $args{'deflate'};
      $args{'deflate'} = sub { shift->$meth; };
    }
    $self->inflate_column($col, \%args);

    $rel_info = {
        class => $f_class
    };
  }
  else {
    $self->belongs_to($col, $f_class);
    $rel_info = $self->result_source_instance->relationship_info($col);
  }

  $rel_info->{args} = \%args;

  $self->_extend_meta(
    has_a => $col,
    $rel_info
  );

  return 1;
}

sub _mk_inflated_column_accessor {
    my($class, $col) = @_;

    return $class->mk_group_accessors('inflated_column' => $col);
}

sub has_many {
  my ($class, $rel, $f_class, $f_key, $args) = @_;

  my @f_method;

  if (ref $f_class eq 'ARRAY') {
    ($f_class, @f_method) = @$f_class;
  }

  if (ref $f_key eq 'HASH' && !$args) { $args = $f_key; undef $f_key; };

  $args ||= {};
  my $cascade = delete $args->{cascade} || '';
  if (delete $args->{no_cascade_delete} || $cascade eq 'None') {
    $args->{cascade_delete} = 0;
  }
  elsif( $cascade eq 'Delete' ) {
    $args->{cascade_delete} = 1;
  }
  elsif( length $cascade ) {
    warn "Unemulated cascade option '$cascade' in $class->has_many($rel => $f_class)";
  }

  if( !$f_key and !@f_method ) {
      $class->ensure_class_loaded($f_class);
      my $f_source = $f_class->result_source_instance;
      ($f_key) = grep { $f_source->relationship_info($_)->{class} eq $class }
                      $f_source->relationships;
  }

  $class->next::method($rel, $f_class, $f_key, $args);

  my $rel_info = $class->result_source_instance->relationship_info($rel);
  $args->{mapping}      = \@f_method;
  $args->{foreign_key}  = $f_key;
  $rel_info->{args} = $args;

  $class->_extend_meta(
    has_many => $rel,
    $rel_info
  );

  if (@f_method) {
    quote_sub "${class}::${rel}", sprintf( <<'EOC', perlstring $rel), { '$rf' => \sub { my $o = shift; $o = $o->$_ for @f_method; $o } };
      my $rs = shift->search_related( %s => @_);
      $rs->{attrs}{record_filter} = $rf;
      return (wantarray ? $rs->all : $rs);
EOC

    return 1;
  }
}


sub might_have {
  my ($class, $rel, $f_class, @columns) = @_;

  my $ret;
  if (ref $columns[0] || !defined $columns[0]) {
    $ret = $class->next::method($rel, $f_class, @columns);
  } else {
    $ret = $class->next::method($rel, $f_class, undef,
                                { proxy => \@columns });
  }

  my $rel_info = $class->result_source_instance->relationship_info($rel);
  $rel_info->{args}{import} = \@columns;

  $class->_extend_meta(
    might_have => $rel,
    $rel_info
  );

  return $ret;
}


sub _extend_meta {
    my ($class, $type, $rel, $val) = @_;
    my %hash = %{ Clone::clone($class->__meta_info || {}) };