use Scalar::Util ();
use Scope::Guard;
+###
+### Internal method
+### Do not use
+###
+BEGIN {
+ *MULTICREATE_DEBUG =
+ $ENV{DBIC_MULTICREATE_DEBUG}
+ ? sub () { 1 }
+ : sub () { 0 };
+}
+
__PACKAGE__->mk_group_accessors('simple' => qw/_source_handle/);
=head1 NAME
For a more involved explanation, see L<DBIx::Class::ResultSet/create>.
+Please note that if a value is not passed to new, no value will be sent
+in the SQL INSERT call, and the column will therefore assume whatever
+default value was specified in your database. While DBIC will retrieve the
+value of autoincrement columns, it will never make an explicit database
+trip to retrieve default values assigned by the RDBMS. You can explicitly
+request that all values be fetched back from the database by calling
+L</discard_changes>, or you can supply an explicit C<undef> to columns
+with NULL as the default, and save yourself a SELECT.
+
+ CAVEAT:
+
+ The behavior described above will backfire if you use a foreign key column
+ with a database-defined default. If you call the relationship accessor on
+ an object that doesn't have a set value for the FK column, DBIC will throw
+ an exception, as it has no way of knowing the PK of the related object (if
+ there is one).
+
=cut
## It needs to store the new objects somewhere, and call insert on that list later when insert is called on this object. We may need an accessor for these so the user can retrieve them, if just doing ->new().
sub __new_related_find_or_new_helper {
my ($self, $relname, $data) = @_;
if ($self->__their_pk_needs_us($relname, $data)) {
+ MULTICREATE_DEBUG and warn "MC $self constructing $relname via new_result";
return $self->result_source
->related_source($relname)
->resultset
->new_result($data);
}
- if ($self->result_source->pk_depends_on($relname, $data)) {
+ if ($self->result_source->_pk_depends_on($relname, $data)) {
+ MULTICREATE_DEBUG and warn "MC $self constructing $relname via find_or_new";
return $self->result_source
->related_source($relname)
->resultset
- ->find_or_create($data);
+ ->find_or_new($data);
}
+ MULTICREATE_DEBUG and warn "MC $self constructing $relname via find_or_new_related";
return $self->find_or_new_related($relname, $data);
}
foreach my $key (keys %$reverse) {
# if their primary key depends on us, then we have to
# just create a result and we'll fill it out afterwards
- return 1 if $rel_source->pk_depends_on($key, $us);
+ return 1 if $rel_source->_pk_depends_on($key, $us);
}
return 0;
}
$new->result_source($source);
}
+ if (my $related = delete $attrs->{-from_resultset}) {
+ @{$new->{_ignore_at_insert}={}}{@$related} = ();
+ }
+
if ($attrs) {
$new->throw_exception("attrs must be a hashref")
unless ref($attrs) eq 'HASH';
$rel_obj = $new->__new_related_find_or_new_helper($key, $rel_obj);
}
- $new->{_rel_in_storage} = 0 unless ($rel_obj->in_storage);
+ if ($rel_obj->in_storage) {
+ $new->set_from_related($key, $rel_obj);
+ } else {
+ $new->{_rel_in_storage} = 0;
+ MULTICREATE_DEBUG and warn "MC $new uninserted $key $rel_obj\n";
+ }
- $new->set_from_related($key, $rel_obj) if $rel_obj->in_storage;
$related->{$key} = $rel_obj;
next;
} elsif ($info && $info->{attrs}{accessor}
&& $info->{attrs}{accessor} eq 'multi'
&& ref $attrs->{$key} eq 'ARRAY') {
my $others = delete $attrs->{$key};
- foreach my $rel_obj (@$others) {
+ my $total = @$others;
+ my @objects;
+ foreach my $idx (0 .. $#$others) {
+ my $rel_obj = $others->[$idx];
if(!Scalar::Util::blessed($rel_obj)) {
$rel_obj = $new->__new_related_find_or_new_helper($key, $rel_obj);
}
- $new->{_rel_in_storage} = 0 unless ($rel_obj->in_storage);
+ if ($rel_obj->in_storage) {
+ $new->set_from_related($key, $rel_obj);
+ } else {
+ $new->{_rel_in_storage} = 0;
+ MULTICREATE_DEBUG and
+ warn "MC $new uninserted $key $rel_obj (${\($idx+1)} of $total)\n";
+ }
$new->set_from_related($key, $rel_obj) if $rel_obj->in_storage;
+ push(@objects, $rel_obj);
}
- $related->{$key} = $others;
+ $related->{$key} = \@objects;
next;
} elsif ($info && $info->{attrs}{accessor}
&& $info->{attrs}{accessor} eq 'filter')
if(!Scalar::Util::blessed($rel_obj)) {
$rel_obj = $new->__new_related_find_or_new_helper($key, $rel_obj);
}
- $new->{_rel_in_storage} = 0 unless ($rel_obj->in_storage);
+ unless ($rel_obj->in_storage) {
+ $new->{_rel_in_storage} = 0;
+ MULTICREATE_DEBUG and warn "MC $new uninserted $key $rel_obj";
+ }
$inflated->{$key} = $rel_obj;
next;
} elsif ($class->has_column($key)
next REL unless (Scalar::Util::blessed($rel_obj)
&& $rel_obj->isa('DBIx::Class::Row'));
- next REL unless $source->pk_depends_on(
+ next REL unless $source->_pk_depends_on(
$relname, { $rel_obj->get_columns }
);
- $rel_obj->insert();
+ MULTICREATE_DEBUG and warn "MC $self pre-reconstructing $relname $rel_obj\n";
+
+ my $them = { %{$rel_obj->{_relationship_data} || {} }, $rel_obj->get_inflated_columns };
+ my $re = $self->result_source
+ ->related_source($relname)
+ ->resultset
+ ->find_or_create($them);
+ %{$rel_obj} = %{$re};
$self->set_from_related($relname, $rel_obj);
delete $related_stuff{$relname};
}
}
+ MULTICREATE_DEBUG and do {
+ no warnings 'uninitialized';
+ warn "MC $self inserting (".join(', ', $self->get_columns).")\n";
+ };
my $updated_cols = $source->storage->insert($source, { $self->get_columns });
- $self->set_columns($updated_cols);
+ foreach my $col (keys %$updated_cols) {
+ $self->store_column($col, $updated_cols->{$col});
+ }
## PK::Auto
my @auto_pri = grep {
if (@auto_pri) {
#$self->throw_exception( "More than one possible key found for auto-inc on ".ref $self )
# if defined $too_many;
-
+ MULTICREATE_DEBUG and warn "MC $self fetching missing PKs ".join(', ', @auto_pri)."\n";
my $storage = $self->result_source->storage;
$self->throw_exception( "Missing primary key but Storage doesn't support last_insert_id" )
unless $storage->can('last_insert_id');
$self->store_column($auto_pri[$_] => $ids[$_]) for 0 .. $#ids;
}
+
$self->{_dirty_columns} = {};
$self->{related_resultsets} = {};
if(!$self->{_rel_in_storage}) {
- ## Now do the has_many rels, that need $selfs ID.
+ ## Now do the relationships that need our ID (has_many etc.)
foreach my $relname (keys %related_stuff) {
my $rel_obj = $related_stuff{$relname};
my @cands;
my $reverse = $source->reverse_relationship_info($relname);
foreach my $obj (@cands) {
$obj->set_from_related($_, $self) for keys %$reverse;
- my $them = { $obj->get_inflated_columns };
+ my $them = { %{$obj->{_relationship_data} || {} }, $obj->get_inflated_columns };
if ($self->__their_pk_needs_us($relname, $them)) {
- $obj = $self->find_or_create_related($relname, $them);
+ if (exists $self->{_ignore_at_insert}{$relname}) {
+ MULTICREATE_DEBUG and warn "MC $self skipping post-insert on $relname";
+ } else {
+ MULTICREATE_DEBUG and warn "MC $self re-creating $relname $obj";
+ my $re = $self->result_source
+ ->related_source($relname)
+ ->resultset
+ ->find_or_create($them);
+ %{$obj} = %{$re};
+ MULTICREATE_DEBUG and warn "MC $self new $relname $obj";
+ }
} else {
+ MULTICREATE_DEBUG and warn "MC $self post-inserting $obj";
$obj->insert();
}
}
}
}
+ delete $self->{_ignore_at_insert};
$rollback_guard->commit;
}
database-level cascade or restrict will take precedence over a
DBIx-Class-based cascading delete.
+If you delete an object within a txn_do() (see L<DBIx::Class::Storage/txn_do>)
+and the transaction subsequently fails, the row object will remain marked as
+not being in storage. If you know for a fact that the object is still in
+storage (i.e. by inspecting the cause of the transaction's failure), you can
+use C<< $obj->in_storage(1) >> to restore consistency between the object and
+the database. This would allow a subsequent C<< $obj->delete >> to work
+as expected.
+
See also L<DBIx::Class::ResultSet/delete>.
=cut
return map {
my $accessor = $self->column_info($_)->{'accessor'} || $_;
($_ => $self->$accessor);
- } $self->columns;
+ } grep $self->has_column_loaded($_), $self->columns;
}
=head2 set_column
{
my $rel = delete $upd->{$key};
$self->set_from_related($key => $rel);
- $self->{_relationship_data}{$key} = $rel;
+ $self->{_relationship_data}{$key} = $rel;
} elsif ($info && $info->{attrs}{accessor}
- && $info->{attrs}{accessor} eq 'multi'
- && ref $upd->{$key} eq 'ARRAY') {
- my $others = delete $upd->{$key};
- foreach my $rel_obj (@$others) {
- if(!Scalar::Util::blessed($rel_obj)) {
- $rel_obj = $self->create_related($key, $rel_obj);
- }
- }
- $self->{_relationship_data}{$key} = $others;
-# $related->{$key} = $others;
- next;
+ && $info->{attrs}{accessor} eq 'multi') {
+ $self->throw_exception(
+ "Recursive update is not supported over relationships of type multi ($key)"
+ );
}
elsif ($self->has_column($key)
&& exists $self->column_info($key)->{_inflate_info})
{
- $self->set_inflated_column($key, delete $upd->{$key});
+ $self->set_inflated_column($key, delete $upd->{$key});
}
}
}
object. If a hashref of replacement data is supplied, these will take
precedence over data in the original.
-If the row has related objects in a
-L<DBIx::Class::Relationship/has_many> then those objects may be copied
-too depending on the L<cascade_copy|DBIx::Class::Relationship>
-relationship attribute.
+Relationships will be followed by the copy procedure B<only> if the
+relationship specifes a true value for its
+L<cascade_copy|DBIx::Class::Relationship::Base> attribute. C<cascade_copy>
+is set by default on C<has_many> relationships and unset on all others.
=cut
next unless $rel_info->{attrs}{cascade_copy};
- my $resolved = $self->result_source->resolve_condition(
+ my $resolved = $self->result_source->_resolve_condition(
$rel_info->{cond}, $rel, $new
);
Reblessing can also be done more easily by setting C<result_class> in
your Result class. See L<DBIx::Class::ResultSource/result_class>.
+Different types of results can also be created from a particular
+L<DBIx::Class::ResultSet>, see L<DBIx::Class::ResultSet/result_class>.
+
=cut
sub inflate_result {
$fetched = $pre_source->result_class->inflate_result(
$pre_source, @{$pre_val});
}
- $new->related_resultset($pre)->set_cache([ $fetched ]);
my $accessor = $source->relationship_info($pre)->{attrs}{accessor};
$class->throw_exception("No accessor for prefetched $pre")
unless defined $accessor;
} else {
$class->throw_exception("Prefetch not supported with accessor '$accessor'");
}
+ $new->related_resultset($pre)->set_cache([ $fetched ]);
}
}
return $new;
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