use DBIx::Class::Exception;
use Carp::Clan qw/^DBIx::Class/;
+use Try::Tiny;
+use namespace::clean;
use base qw/DBIx::Class/;
L<DBIx::Class::Row> objects. You can change the name of the accessor
by supplying an L</accessor> in the column_info hash.
+If a column name beginning with a plus sign ('+col1') is provided, the
+attributes provided will be merged with any existing attributes for the
+column, with the new attributes taking precedence in the case that an
+attribute already exists. Using this without a hashref
+(C<< $source->add_columns(qw/+col1 +col2/) >>) is legal, but useless --
+it does the same thing it would do without the plus.
+
The contents of the column_info are not set in stone. The following
keys are currently recognised/used by DBIx::Class:
This contains the column type. It is automatically filled if you use the
L<SQL::Translator::Producer::DBIx::Class::File> producer, or the
-L<DBIx::Class::Schema::Loader> module.
+L<DBIx::Class::Schema::Loader> module.
Currently there is no standard set of values for the data_type. Use
whatever your database supports.
L</sequence> value as well.
Also set this for MSSQL columns with the 'uniqueidentifier'
-L<DBIx::Class::ResultSource/data_type> whose values you want to automatically
-generate using C<NEWID()>, unless they are a primary key in which case this will
-be done anyway.
+L<data_type|DBIx::Class::ResultSource/data_type> whose values you want to
+automatically generate using C<NEWID()>, unless they are a primary key in which
+case this will be done anyway.
=item extra
my @added;
my $columns = $self->_columns;
while (my $col = shift @cols) {
+ my $column_info = {};
+ if ($col =~ s/^\+//) {
+ $column_info = $self->column_info($col);
+ }
+
# If next entry is { ... } use that for the column info, if not
# use an empty hashref
- my $column_info = ref $cols[0] ? shift(@cols) : {};
+ if (ref $cols[0]) {
+ my $new_info = shift(@cols);
+ %$column_info = (%$column_info, %$new_info);
+ }
push(@added, $col) unless exists $columns->{$col};
$columns->{$col} = $column_info;
}
$self->{_columns_info_loaded}++;
my $info = {};
my $lc_info = {};
- # eval for the case of storage without table
- eval { $info = $self->storage->columns_info_for( $self->from ) };
- unless ($@) {
+
+ # try for the case of storage without table
+ try {
+ $info = $self->storage->columns_info_for( $self->from );
for my $realcol ( keys %{$info} ) {
$lc_info->{lc $realcol} = $info->{$realcol};
}
%{ $info->{$col} || $lc_info->{lc $col} || {} }
};
}
- }
+ };
}
return $self->_columns->{$column};
}
Additionally, defines a L<unique constraint|add_unique_constraint>
named C<primary>.
-The primary key columns are used by L<DBIx::Class::PK::Auto> to
-retrieve automatically created values from the database. They are also
-used as default joining columns when specifying relationships, see
-L<DBIx::Class::Relationship>.
+Note: you normally do want to define a primary key on your sources
+B<even if the underlying database table does not have a primary key>.
+See
+L<DBIx::Class::Intro/The Significance and Importance of Primary Keys>
+for more info.
=cut
return @{shift->_primaries||[]};
}
+# a helper method that will automatically die with a descriptive message if
+# no pk is defined on the source in question. For internal use to save
+# on if @pks... boilerplate
sub _pri_cols {
my $self = shift;
my @pcols = $self->primary_columns
or $self->throw_exception (sprintf(
- 'Operation requires a primary key to be declared on %s via set_primary_key',
- ref $self,
+ "Operation requires a primary key to be declared on '%s' via set_primary_key",
+ $self->source_name,
));
return @pcols;
}
my $schema = $source->schema();
-Returns the L<DBIx::Class::Schema> object that this result source
+Returns the L<DBIx::Class::Schema> object that this result source
belongs to.
=head2 storage
return $self;
- # XXX disabled. doesn't work properly currently. skip in tests.
+# XXX disabled. doesn't work properly currently. skip in tests.
my $f_source = $self->schema->source($f_source_name);
unless ($f_source) {
}
return unless $f_source; # Can't test rel without f_source
- eval { $self->_resolve_join($rel, 'me', {}, []) };
-
- if ($@) { # If the resolve failed, back out and re-throw the error
- delete $rels{$rel}; #
+ try { $self->_resolve_join($rel, 'me', {}, []) }
+ catch {
+ # If the resolve failed, back out and re-throw the error
+ delete $rels{$rel};
$self->_relationships(\%rels);
- $self->throw_exception("Error creating relationship $rel: $@");
- }
+ $self->throw_exception("Error creating relationship $rel: $_");
+ };
+
1;
}
for my $rel (keys %$join) {
my $rel_info = $self->relationship_info($rel)
- or $self->throw_exception("No such relationship ${rel}");
+ or $self->throw_exception("No such relationship '$rel' on " . $self->source_name);
my $force_left = $parent_force_left;
$force_left ||= lc($rel_info->{attrs}{join_type}||'') eq 'left';
);
my $rel_info = $self->relationship_info($join)
- or $self->throw_exception("No such relationship ${join}");
+ or $self->throw_exception("No such relationship $join on " . $self->source_name);
my $rel_src = $self->related_source($join);
return [ { $as => $rel_src->from,
my $as = shift @{$p->{-join_aliases}};
my $rel_info = $self->relationship_info( $pre );
- $self->throw_exception( $self->name . " has no such relationship '$pre'" )
+ $self->throw_exception( $self->source_name . " has no such relationship '$pre'" )
unless $rel_info;
my $as_prefix = ($alias =~ /^.*?\.(.+)$/ ? $1.'.' : '');
my $rel_source = $self->related_source($pre);
}
#my @col = map { (/^self\.(.+)$/ ? ("${as_prefix}.$1") : ()); }
# values %{$rel_info->{cond}};
- $collapse->{".${as_prefix}${pre}"} = [ $rel_source->primary_columns ];
+ $collapse->{".${as_prefix}${pre}"} = [ $rel_source->_pri_cols ];
# action at a distance. prepending the '.' allows simpler code
# in ResultSet->_collapse_result
my @key = map { (/^foreign\.(.+)$/ ? ($1) : ()); }
keys %{$rel_info->{cond}};
my @ord = (ref($rel_info->{attrs}{order_by}) eq 'ARRAY'
? @{$rel_info->{attrs}{order_by}}
-
+
: (defined $rel_info->{attrs}{order_by}
? ($rel_info->{attrs}{order_by})
: ()));
sub related_source {
my ($self, $rel) = @_;
if( !$self->has_relationship( $rel ) ) {
- $self->throw_exception("No such relationship '$rel'");
+ $self->throw_exception("No such relationship '$rel' on " . $self->source_name);
}
return $self->schema->source($self->relationship_info($rel)->{source});
}
sub related_class {
my ($self, $rel) = @_;
if( !$self->has_relationship( $rel ) ) {
- $self->throw_exception("No such relationship '$rel'");
+ $self->throw_exception("No such relationship '$rel' on " . $self->source_name);
}
return $self->schema->class($self->relationship_info($rel)->{source});
}
=head2 handle
-Obtain a new handle to this source. Returns an instance of a
+Obtain a new handle to this source. Returns an instance of a
L<DBIx::Class::ResultSourceHandle>.
=cut
projects / dbsrgits/DBIx-Class.git / blobdiff