1 package Reaction::InterfaceModel::Reflector::DBIC;
3 use aliased 'Reaction::InterfaceModel::Action::DBIC::ResultSet::Create';
4 use aliased 'Reaction::InterfaceModel::Action::DBIC::ResultSet::DeleteAll';
5 use aliased 'Reaction::InterfaceModel::Action::DBIC::Result::Update';
6 use aliased 'Reaction::InterfaceModel::Action::DBIC::Result::Delete';
8 use aliased 'Reaction::InterfaceModel::Collection::Virtual::ResultSet';
9 use aliased 'Reaction::InterfaceModel::Object';
10 use aliased 'Reaction::InterfaceModel::Action';
18 has make_classes_immutable => (isa => "Bool", is => "rw", required => 1, default => sub{ 1 });
20 #user defined actions and prototypes
21 has object_actions => (isa => "HashRef", is => "rw", lazy_build => 1);
22 has collection_actions => (isa => "HashRef", is => "rw", lazy_build => 1);
24 #which actions to create by default
25 has default_object_actions => (isa => "ArrayRef", is => "rw", lazy_build => 1);
26 has default_collection_actions => (isa => "ArrayRef", is => "rw", lazy_build => 1);
28 #builtin actions and prototypes
29 has builtin_object_actions => (isa => "HashRef", is => "rw", lazy_build => 1);
30 has builtin_collection_actions => (isa => "HashRef", is => "rw", lazy_build => 1);
32 implements _build_object_actions => as { {} };
33 implements _build_collection_actions => as { {} };
35 implements _build_default_object_actions => as { [ qw/Update Delete/ ] };
36 implements _build_default_collection_actions => as { [ qw/Create DeleteAll/ ] };
38 implements _build_builtin_object_actions => as {
40 Update => { name => 'Update', base => Update },
41 Delete => { name => 'Delete', base => Delete, attributes => [] },
45 implements _build_builtin_collection_actions => as {
47 Create => {name => 'Create', base => Create },
48 DeleteAll => {name => 'DeleteAll', base => DeleteAll, attributes => [] }
52 implements _all_object_actions => as {
54 return $self->merge_hashes
55 ($self->builtin_object_actions, $self->object_actions);
58 implements _all_collection_actions => as {
60 return $self->merge_hashes
61 ($self->builtin_collection_actions, $self->collection_actions);
64 implements dm_name_from_class_name => as {
65 my($self, $class) = @_;
66 confess("wrong arguments") unless $class;
68 $class = "_" . lc($class) . "_store";
72 implements dm_name_from_source_name => as {
73 my($self, $source) = @_;
74 confess("wrong arguments") unless $source;
75 $source =~ s/([a-z0-9])([A-Z])/${1}_${2}/g ;
76 $source = "_" . lc($source) . "_store";
80 implements class_name_from_source_name => as {
81 my ($self, $model_class, $source_name) = @_;
82 confess("wrong arguments") unless $model_class && $source_name;
83 return join "::", $model_class, $source_name;
86 implements class_name_for_collection_of => as {
87 my ($self, $object_class) = @_;
88 confess("wrong arguments") unless $object_class;
89 return "${object_class}::Collection";
92 implements merge_hashes => as {
93 my($self, $left, $right) = @_;
94 return Catalyst::Utils::merge_hashes($left, $right);
97 implements parse_reflect_rules => as {
98 my ($self, $rules, $haystack) = @_;
99 confess('$rules must be an array reference') unless ref $rules eq 'ARRAY';
100 confess('$haystack must be an array reference') unless ref $haystack eq 'ARRAY';
103 my (@exclude, @include, $global_opts);
104 if(@$rules == 2 && $rules->[0] eq '-exclude'){
105 push(@exclude, (ref $rules->[1] eq 'ARRAY' ? @{$rules->[1]} : $rules->[1]));
107 for my $rule ( @$rules ){
108 if (ref $rule eq 'ARRAY' && $rule->[0] eq '-exclude'){
109 push(@exclude, (ref $rule->[1] eq 'ARRAY' ? @{$rule->[1]} : $rule->[1]));
110 } elsif( ref $rule eq 'HASH' ){
111 $global_opts = ref $global_opts eq 'HASH' ?
112 $self->merge_hashes($global_opts, $rule) : $rule;
114 push(@include, $rule);
118 my $check_exclude = sub{
119 for my $rule (@exclude){
120 return 1 if(ref $rule eq 'Regexp' ? $_[0] =~ /$rule/ : $_[0] eq $rule);
125 @$haystack = grep { !$check_exclude->($_) } @$haystack;
126 $self->merge_reflect_rules(\@include, $needles, $haystack, $global_opts);
130 implements merge_reflect_rules => as {
131 my ($self, $rules, $needles, $haystack, $local_opts) = @_;
132 for my $rule ( @$rules ){
133 if(!ref $rule && ( grep {$rule eq $_} @$haystack ) ){
134 $needles->{$rule} = defined $needles->{$rule} ?
135 $self->merge_hashes($needles->{$rule}, $local_opts) : $local_opts;
136 } elsif( ref $rule eq 'Regexp' ){
137 for my $match ( grep { /$rule/ } @$haystack ){
138 $needles->{$match} = defined $needles->{$match} ?
139 $self->merge_hashes($needles->{$match}, $local_opts) : $local_opts;
141 } elsif( ref $rule eq 'ARRAY' ){
143 $opts = pop(@$rule) if @$rule > 1 and ref $rule->[$#$rule] eq 'HASH';
144 $opts = $self->merge_hashes($local_opts, $opts) if defined $local_opts;
145 $self->merge_reflect_rules($rule, $needles, $haystack, $opts);
150 implements reflect_schema => as {
151 my ($self, %opts) = @_;
152 my $base = delete $opts{base} || Object;
153 my $model = delete $opts{model_class};
154 my $schema = delete $opts{schema_class};
155 my $dm_name = delete $opts{domain_model_name};
156 my $dm_args = delete $opts{domain_model_args} || {};
157 $dm_name ||= $self->dm_name_from_class_name($schema);
159 #load all necessary classes
160 confess("model_class and schema_class are required parameters")
161 unless($model && $schema);
162 Class::MOP::load_class( $base );
163 Class::MOP::load_class( $schema );
164 my $meta = $self->_load_or_create($model, $base);
166 # sources => undef, #default to qr/./
167 # sources => [], #default to nothing
168 # sources => qr//, #DWIM, treated as [qr//]
169 # sources => [{...}] #DWIM, treat as [qr/./, {...} ]
170 # sources => [[-exclude => ...]] #DWIM, treat as [qr/./, [-exclude => ...]]
171 my $haystack = [ $schema->sources ];
173 my $rules = delete $opts{sources};
176 } elsif( ref $rules eq 'Regexp'){
178 } elsif( ref $rules eq 'ARRAY' && @$rules){
179 #don't add a qr/./ rule if we have at least one match rule
180 push(@$rules, qr/./) unless grep {(ref $_ eq 'ARRAY' && $_->[0] ne '-exclude')
181 || !ref $_ || ref $_ eq 'Regexp'} @$rules;
184 my $sources = $self->parse_reflect_rules($rules, $haystack);
186 my $make_immutable = $meta->is_immutable || $self->make_classes_immutable;
187 $meta->make_mutable if $meta->is_immutable;
189 $meta->add_domain_model
190 ($dm_name, is => 'rw', isa => $schema, required => 1, %$dm_args);
192 for my $source_name (keys %$sources){
193 my $source_opts = $sources->{$source_name} || {};
194 $self->reflect_source(
195 source_name => $source_name,
196 parent_class => $model,
197 schema_class => $schema,
198 source_class => $schema->class($source_name),
199 parent_domain_model_name => $dm_name,
204 $meta->make_immutable if $make_immutable;
208 implements _compute_source_options => as {
209 my ($self, %opts) = @_;
210 my $schema = delete $opts{schema_class};
211 my $source_name = delete $opts{source_name};
212 my $source_class = delete $opts{source_class};
213 my $parent = delete $opts{parent_class};
214 my $parent_dm = delete $opts{parent_domain_model_name};
216 #this is the part where I hate my life for promissing all sorts of DWIMery
217 confess("parent_class and source_name or source_class are required parameters")
218 unless($parent && ($source_name || $source_class));
220 OUTER: until( $schema && $source_name && $source_class && $parent_dm ){
221 if( $schema && !$source_name){
222 next OUTER if $source_name = $source_class->result_source_instance->source_name;
223 } elsif( $schema && !$source_class){
224 next OUTER if $source_class = eval { $schema->class($source_name) };
227 if($source_class && (!$schema || !$source_name)){
229 $schema = $source_class->result_source_instance->schema;
230 next OUTER if $schema && Class::MOP::load_class($schema);
233 $source_name = $source_class->result_source_instance->source_name;
234 next OUTER if $source_name;
237 my @haystack = $parent_dm ?
238 $parent->meta->find_attribute_by_name($parent_dm) : $parent->domain_models;
240 #there's a lot of guessing going on, but it should work fine on most cases
241 INNER: for my $needle (@haystack){
242 my $isa = $needle->_isa_metadata;
243 next INNER unless Class::MOP::load_class( $isa->_isa_metadata );
244 next INNER unless $isa->isa('DBIx::Class::Schema');
245 if(!$parent_dm && $schema && $isa eq $schema){
246 $parent_dm = $needle->name;
251 my $src_class = eval{ $isa->class($source_name) };
252 next INNER unless $src_class;
253 next INNER if($source_class && $source_class ne $src_class);
255 $parent_dm = $needle->name;
256 $source_class = $src_class;
261 #do we even need to go this far?
262 if( !$parent_dm && $schema ){
263 my $tentative = $self->dm_name_from_class_name($schema);
264 $parent_dm = $tentative if grep{$_->name eq $tentative} @haystack;
267 confess("Could not determine options automatically from: schema " .
268 "'${schema}', source_name '${source_name}', source_class " .
269 "'${source_class}', parent_domain_model_name '${parent_dm}'");
273 source_name => $source_name,
274 schema_class => $schema,
275 source_class => $source_class,
276 parent_class => $parent,
277 parent_domain_model_name => $parent_dm,
281 implements _class_to_attribute_name => as {
282 my ( $self, $str ) = @_;
283 confess("wrong arguments passed for _class_to_attribute_name") unless $str;
284 return join('_', map lc, split(/::|(?<=[a-z0-9])(?=[A-Z])/, $str))
287 implements add_source => as {
288 my ($self, %opts) = @_;
290 my $model = delete $opts{model_class};
291 my $reader = delete $opts{reader};
292 my $source = delete $opts{source_name};
293 my $dm_name = delete $opts{domain_model_name};
294 my $collection = delete $opts{collection_class};
295 my $name = delete $opts{attribute_name} || $source;
297 confess("model_class and source_name are required parameters")
298 unless $model && $source;
299 my $meta = $model->meta;
301 unless( $collection ){
302 my $object = $self->class_name_from_source_name($model, $source);
303 $collection = $self->class_name_for_collection_of($object);
307 $reader =~ s/([a-z0-9])([A-Z])/${1}_${2}/g ;
308 $reader = $self->_class_to_attribute_name($reader) . "_collection";
311 my @haystack = $meta->domain_models;
313 @haystack = grep { $_->_isa_metadata->isa('DBIx::Class::Schema') } @haystack;
316 $dm_name = $haystack[0]->name;
317 } elsif(@haystack > 1){
318 confess("Failed to automatically determine domain_model_name. More than one " .
319 "possible match (".(join ", ", map{"'".$_->name."'"} @haystack).")");
321 confess("Failed to automatically determine domain_model_name. No matches.");
331 predicate => "has_" . $self->_class_to_attribute_name($name) ,
332 domain_model => $dm_name,
333 orig_attr_name => $source,
336 return $collection->new(
337 _source_resultset => $self->$dm_name->resultset($source),
343 my $make_immutable = $meta->is_immutable;
344 $meta->make_mutable if $make_immutable;
345 my $attr = $meta->add_attribute($name, %attr_opts);
346 $meta->make_immutable if $make_immutable;
351 implements reflect_source => as {
352 my ($self, %opts) = @_;
353 my $collection = delete $opts{collection} || {};
354 %opts = %{ $self->merge_hashes(\%opts, $self->_compute_source_options(%opts)) };
356 my $obj_meta = $self->reflect_source_object(%opts);
357 my $col_meta = $self->reflect_source_collection
359 object_class => $obj_meta->name,
360 source_class => $opts{source_class},
365 model_class => $opts{parent_class},
366 source_name => $opts{source_name},
367 domain_model_name => $opts{parent_domain_model_name},
368 collection_class => $col_meta->name,
372 implements reflect_source_collection => as {
373 my ($self, %opts) = @_;
374 my $base = delete $opts{base} || ResultSet;
375 my $class = delete $opts{class};
376 my $object = delete $opts{object_class};
377 my $source = delete $opts{source_class};
378 my $action_rules = delete $opts{actions};
380 confess('object_class and source_class are required parameters')
381 unless $object && $source;
382 $class ||= $self->class_name_for_collection_of($object);
384 Class::MOP::load_class( $base );
385 Class::MOP::load_class( $object );
386 my $meta = $self->_load_or_create($class, $base);
388 my $make_immutable = $meta->is_immutable || $self->make_classes_immutable;;
389 $meta->make_mutable if $meta->is_immutable;
390 $meta->add_method(_build_member_type => sub{ $object } );
391 #XXX as a default pass the domain model as a target_model until i come up with something
392 #better through the coercion method
393 my $def_act_args = sub {
395 return { (target_model => $_[0]->_source_resultset), %{ $super->(@_) } };
397 $meta->add_around_method_modifier('_default_action_args_for', $def_act_args);
401 my $all_actions = $self->_all_collection_actions;
402 my $action_haystack = [keys %$all_actions];
403 if(!defined $action_rules){
404 $action_rules = $self->default_collection_actions;
405 } elsif( (!ref $action_rules && $action_rules) || (ref $action_rules eq 'Regexp') ){
406 $action_rules = [ $action_rules ];
407 } elsif( ref $action_rules eq 'ARRAY' && @$action_rules){
408 #don't add a qr/./ rule if we have at least one match rule
409 push(@$action_rules, qr/./)
410 unless grep {(ref $_ eq 'ARRAY' && $_->[0] ne '-exclude')
411 || !ref $_ || ref $_ eq 'Regexp'} @$action_rules;
414 # XXX this is kind of a dirty hack to support custom actions that are not
415 # previously defined and still be able to use the parse_reflect_rules mechanism
416 my @custom_actions = grep {!exists $all_actions->{$_}}
417 map{ $_->[0] } grep {ref $_ eq 'ARRAY' && $_->[0] ne '-exclude'} @$action_rules;
418 push(@$action_haystack, @custom_actions);
419 my $actions = $self->parse_reflect_rules($action_rules, $action_haystack);
420 for my $action (keys %$actions){
421 my $action_opts = $self->merge_hashes
422 ($all_actions->{$action} || {}, $actions->{$action} || {});
424 #NOTE: If the name of the action is not specified in the prototype then use it's
425 #hash key as the name. I think this is sane beahvior, but I've actually been thinking
426 #of making Action prototypes their own separate objects
427 $self->reflect_source_action(
429 object_class => $object,
430 source_class => $source,
434 # XXX i will move this to use the coercion method soon. this will be
435 # GoodEnough until then. I still need to think a little about the type coercion
436 # thing so i don't make a mess of it
437 my $act_args = sub { #override target model for this action
439 return { %{ $super->(@_) },
440 ($_[1] eq $action ? (target_model => $_[0]->_source_resultset) : () ) };
442 $meta->add_around_method_modifier('_default_action_args_for', $act_args);
445 $meta->make_immutable if $make_immutable;
449 implements reflect_source_object => as {
450 my($self, %opts) = @_;
451 %opts = %{ $self->merge_hashes(\%opts, $self->_compute_source_options(%opts)) };
453 my $base = delete $opts{base} || Object;
454 my $class = delete $opts{class};
455 my $dm_name = delete $opts{domain_model_name};
456 my $dm_opts = delete $opts{domain_model_args} || {};
458 my $source_name = delete $opts{source_name};
459 my $schema = delete $opts{schema_class};
460 my $source_class = delete $opts{source_class};
461 my $parent = delete $opts{parent_class};
462 my $parent_dm = delete $opts{parent_domain_model_name};
464 my $action_rules = delete $opts{actions};
465 my $attr_rules = delete $opts{attributes};
467 $class ||= $self->class_name_from_source_name($parent, $source_name);
469 Class::MOP::load_class($parent);
470 Class::MOP::load_class($schema) if $schema;
471 Class::MOP::load_class($source_class);
473 my $meta = $self->_load_or_create($class, $base);
475 #create the domain model
476 $dm_name ||= $self->dm_name_from_source_name($source_name);
478 $dm_opts->{isa} = $source_class;
479 $dm_opts->{is} ||= 'rw';
480 $dm_opts->{required} ||= 1;
482 my $make_immutable = $meta->is_immutable || $self->make_classes_immutable;;
483 $meta->make_mutable if $meta->is_immutable;
485 my $dm_attr = $meta->add_domain_model($dm_name, %$dm_opts);
486 my $dm_reader = $dm_attr->get_read_method;
488 unless( $class->can('inflate_result') ){
489 my $inflate_method = sub {
490 my $class = shift; my ($src) = @_;
491 $src = $src->resolve if $src->isa('DBIx::Class::ResultSourceHandle');
492 $class->new($dm_name, $src->result_class->inflate_result(@_));
494 $meta->add_method('inflate_result', $inflate_method);
497 #XXX this is here to allow action prototypes to work with ListView
498 # maybe Collections hsould have this kind of thing too to allow you to reconstruct them?
499 #i like the possibility to be honest... as aset of key/value pairs they could be URId
500 #XXX move to using 'handles' for this?
501 $meta->add_method('__id', sub {shift->$dm_reader->id} )
502 unless $class->can('__id');
503 #XXX this one is for Action, ChooseOne and ChooseMany need this shit
504 $meta->add_method('__ident_condition', sub {shift->$dm_reader->ident_condition} )
505 unless $class->can('__ident_condition');
507 #XXX this is just a disaster
508 $meta->add_method('display_name', sub {shift->$dm_reader->display_name} )
509 if( $source_class->can('display_name') && !$class->can('display_name'));
511 #XXX as a default pass the domain model as a target_model until i come up with something
512 #better through the coercion method
513 my $def_act_args = sub {
515 confess "no dm reader: $dm_reader on $_[0]" unless $_[0]->can($dm_reader);
516 return { (target_model => $_[0]->$dm_reader), %{ $super->(@_) } };
518 $meta->add_around_method_modifier('_default_action_args_for', $def_act_args);
521 # attributes => undef, #default to qr/./
522 # attributes => [], #default to nothing
523 # attributes => qr//, #DWIM, treated as [qr//]
524 # attributes => [{...}] #DWIM, treat as [qr/./, {...} ]
525 # attributes => [[-exclude => ...]] #DWIM, treat as [qr/./, [-exclude => ...]]
527 [ map { $_->name } $source_class->meta->compute_all_applicable_attributes ];
529 if(!defined $attr_rules){
530 $attr_rules = [qr/./];
531 } elsif( (!ref $attr_rules && $attr_rules) || (ref $attr_rules eq 'Regexp') ){
532 $attr_rules = [ $attr_rules ];
533 } elsif( ref $attr_rules eq 'ARRAY' && @$attr_rules){
534 #don't add a qr/./ rule if we have at least one match rule
535 push(@$attr_rules, qr/./) unless
536 grep {(ref $_ eq 'ARRAY' && $_->[0] ne '-exclude')
537 || !ref $_ || ref $_ eq 'Regexp'} @$attr_rules;
540 my $attributes = $self->parse_reflect_rules($attr_rules, $attr_haystack);
541 for my $attr_name (keys %$attributes){
542 $self->reflect_source_object_attribute(
544 source_class => $source_class,
545 parent_class => $parent,
546 attribute_name => $attr_name,
547 domain_model_name => $dm_name,
548 %{ $attributes->{$attr_name} || {}},
554 my $all_actions = $self->_all_object_actions;
555 my $action_haystack = [keys %$all_actions];
556 if(!defined $action_rules){
557 $action_rules = $self->default_object_actions;
558 } elsif( (!ref $action_rules && $action_rules) || (ref $action_rules eq 'Regexp') ){
559 $action_rules = [ $action_rules ];
560 } elsif( ref $action_rules eq 'ARRAY' && @$action_rules){
561 #don't add a qr/./ rule if we have at least one match rule
562 push(@$action_rules, qr/./)
563 unless grep {(ref $_ eq 'ARRAY' && $_->[0] ne '-exclude')
564 || !ref $_ || ref $_ eq 'Regexp'} @$action_rules;
567 # XXX this is kind of a dirty hack to support custom actions that are not
568 # previously defined and still be able to use the parse_reflect_rules mechanism
569 my @custom_actions = grep {!exists $all_actions->{$_}} map{ $_->[0] }
570 grep {ref $_ eq 'ARRAY' && $_->[0] ne '-exclude'} @$action_rules;
571 push(@$action_haystack, @custom_actions);
572 my $actions = $self->parse_reflect_rules($action_rules, $action_haystack);
573 for my $action (keys %$actions){
574 my $action_opts = $self->merge_hashes
575 ($all_actions->{$action} || {}, $actions->{$action} || {});
577 #NOTE: If the name of the action is not specified in the prototype then use it's
578 #hash key as the name. I think this is sane beahvior, but I've actually been thinking
579 #of making Action prototypes their own separate objects
580 $self->reflect_source_action(
582 object_class => $class,
583 source_class => $source_class,
587 # XXX i will move this to use the coercion method soon. this will be
588 # GoodEnough until then. I still need to think a little about the type coercion
589 # thing so i don't make a mess of it
590 my $act_args = sub { #override target model for this action
592 confess "no dm reader: $dm_reader on $_[0]" unless $_[0]->can($dm_reader);
593 return { %{ $super->(@_) },
594 ($_[1] eq $action ? (target_model => $_[0]->$dm_reader) : () ) };
596 $meta->add_around_method_modifier('_default_action_args_for', $act_args);
600 $meta->make_immutable if $make_immutable;
604 # needs class, attribute_name domain_model_name
605 implements reflect_source_object_attribute => as {
606 my ($self, %opts) = @_;
607 unless( $opts{attribute_name} && $opts{class} && $opts{parent_class}
608 && ( $opts{source_class} || $opts{domain_model_name} ) ){
609 confess( "Error: class, parent_class, attribute_name, and either " .
610 "domain_model_name or source_class are required parameters" );
613 my $meta = $opts{class}->meta;
614 my $attr_opts = $self->parameters_for_source_object_attribute(%opts);
616 my $make_immutable = $meta->is_immutable;
617 $meta->make_mutable if $meta->is_immutable;
619 my $attr = $meta->add_attribute($opts{attribute_name}, %$attr_opts);
621 $meta->make_immutable if $make_immutable;
625 # needs class, attribute_name domain_model_name
626 implements parameters_for_source_object_attribute => as {
627 my ($self, %opts) = @_;
629 my $class = delete $opts{class};
630 my $attr_name = delete $opts{attribute_name};
631 my $dm_name = delete $opts{domain_model_name};
632 my $source_class = delete $opts{source_class};
633 my $parent_class = delete $opts{parent_class};
634 confess("parent_class is a required argument") unless $parent_class;
635 confess("You must supply at least one of domain_model_name and source_class")
636 unless $dm_name || $source_class;
639 $source = $source_class->result_source_instance if $source_class;
641 if( !$source_class ){
642 my $dm = $class->meta->find_attribute_by_name($dm_name);
643 $source_class = $dm->_isa_metadata;
644 $source = $source_class->result_source_instance;
645 } elsif( !$dm_name ){
646 ($dm_name) = map{$_->name} grep{$_->_isa_metadata eq $source_class}
647 $class->meta->domain_models;
648 if( !$dm_name ){ #last resort guess
649 my $tentative = $self->dm_name_from_source_name($source->source_name);
650 ($dm_name) = $tentative if grep{$_->name eq $tentative} $class->domain_models;
654 my $from_attr = $source_class->meta->find_attribute_by_name($attr_name);
656 #default options. lazy build but no outsider method
657 my %attr_opts = ( is => 'ro', lazy => 1, required => 1,
658 clearer => "_clear_${attr_name}",
659 predicate => "has_${attr_name}",
660 domain_model => $dm_name,
661 orig_attr_name => $attr_name,
665 my $constraint_is_ArrayRef =
666 $from_attr->type_constraint->name eq 'ArrayRef' ||
667 $from_attr->type_constraint->is_subtype_of('ArrayRef');
669 if( my $rel_info = $source->relationship_info($attr_name) ){
670 my $rel_accessor = $rel_info->{attrs}->{accessor};
671 my $rel_moniker = $rel_info->{class}->result_source_instance->source_name;
673 if($rel_accessor eq 'multi' && $constraint_is_ArrayRef) {
675 my $sm = $self->class_name_from_source_name($parent_class, $rel_moniker);
676 #type constraint is a collection, and default builds it
677 $attr_opts{isa} = $self->class_name_for_collection_of($sm);
678 $attr_opts{default} = sub {
679 my $rs = shift->$dm_name->related_resultset($attr_name);
680 return $attr_opts{isa}->new(_source_resultset => $rs);
682 } elsif( $rel_accessor eq 'single') {
684 #type constraint is the foreign IM object, default inflates it
685 $attr_opts{isa} = $self->class_name_from_source_name($parent_class, $rel_moniker);
686 $attr_opts{default} = sub {
688 ->find_related($attr_name, {},{result_class => $attr_opts{isa}});
691 } elsif( $constraint_is_ArrayRef && $attr_name =~ m/^(.*)_list$/ ) {
694 my $link_table = "links_to_${mm_name}_list";
695 my ($hm_source, $far_side);
696 eval { $hm_source = $source->related_source($link_table); }
697 || confess "Can't find ${link_table} has_many for ${mm_name}_list";
698 eval { $far_side = $hm_source->related_source($mm_name); }
699 || confess "Can't find ${mm_name} belongs_to on ".$hm_source->result_class
700 ." traversing many-many for ${mm_name}_list";
702 my $sm = $self->class_name_from_source_name($parent_class,$far_side->source_name);
703 $attr_opts{isa} = $self->class_name_for_collection_of($sm);
705 #proper collections will remove the result_class uglyness.
706 $attr_opts{default} = sub {
707 my $rs = shift->$dm_name->related_resultset($link_table)->related_resultset($mm_name);
708 return $attr_opts{isa}->new(_source_resultset => $rs);
712 my $reader = $from_attr->get_read_method;
713 $attr_opts{isa} = $from_attr->_isa_metadata;
714 $attr_opts{default} = sub{ shift->$dm_name->$reader };
720 implements reflect_source_action => as{
721 my($self, %opts) = @_;
722 my $name = delete $opts{name};
723 my $class = delete $opts{class};
724 my $base = delete $opts{base} || Action;
725 my $object = delete $opts{object_class};
726 my $source = delete $opts{source_class};
728 confess("name, object_class and source_class are required arguments")
729 unless $source && $name && $object;
731 my $attr_rules = delete $opts{attributes};
732 $class ||= $object->_default_action_class_for($name);
734 Class::MOP::load_class( $base );
735 Class::MOP::load_class( $object );
736 Class::MOP::load_class( $source );
738 #print STDERR "\n\t", ref $attr_rules eq 'ARRAY' ? @$attr_rules : $attr_rules,"\n";
739 # attributes => undef, #default to qr/./
740 # attributes => [], #default to nothing
741 # attributes => qr//, #DWIM, treated as [qr//]
742 # attributes => [{...}] #DWIM, treat as [qr/./, {...} ]
743 # attributes => [[-exclude => ...]] #DWIM, treat as [qr/./, [-exclude => ...]]
744 my $attr_haystack = [ map { $_->name } $object->meta->parameter_attributes ];
745 if(!defined $attr_rules){
746 $attr_rules = [qr/./];
747 } elsif( (!ref $attr_rules && $attr_rules) || (ref $attr_rules eq 'Regexp') ){
748 $attr_rules = [ $attr_rules ];
749 } elsif( ref $attr_rules eq 'ARRAY' && @$attr_rules){
750 #don't add a qr/./ rule if we have at least one match rule
751 push(@$attr_rules, qr/./) unless
752 grep {(ref $_ eq 'ARRAY' && $_->[0] ne '-exclude')
753 || !ref $_ || ref $_ eq 'Regexp'} @$attr_rules;
756 #print STDERR "${name}\t${class}\t${base}\n";
757 #print STDERR "\t${object}\t${source}\n";
758 #print STDERR "\t",@$attr_rules,"\n";
760 my $o_meta = $object->meta;
761 my $s_meta = $source->meta;
762 my $attributes = $self->parse_reflect_rules($attr_rules, $attr_haystack);
765 my $meta = $self->_load_or_create($class, $base);
766 my $make_immutable = $meta->is_immutable || $self->make_classes_immutable;
767 $meta->make_mutable if $meta->is_immutable;
769 for my $attr_name (keys %$attributes){
770 my $attr_opts = $attributes->{$attr_name} || {};
771 my $o_attr = $o_meta->find_attribute_by_name($attr_name);
772 my $s_attr_name = $o_attr->orig_attr_name || $attr_name;
773 my $s_attr = $s_meta->find_attribute_by_name($s_attr_name);
774 confess("Unable to find attribute for '${s_attr_name}' via '${source}'")
775 unless defined $s_attr;
776 next unless $s_attr->get_write_method; #only rw attributes!
778 my $attr_params = $self->parameters_for_source_object_action_attribute
780 object_class => $object,
781 source_class => $source,
782 attribute_name => $attr_name
784 $meta->add_attribute( $attr_name => %$attr_params);
787 $meta->make_immutable if $make_immutable;
791 implements parameters_for_source_object_action_attribute => as {
792 my ($self, %opts) = @_;
794 my $object = delete $opts{object_class};
795 my $attr_name = delete $opts{attribute_name};
796 my $source_class = delete $opts{source_class};
797 confess("object_class and attribute_name are required parameters")
798 unless $attr_name && $object;
800 my $o_meta = $object->meta;
801 my $dm_name = $o_meta->find_attribute_by_name($attr_name)->domain_model;
802 $source_class ||= $o_meta->find_attribute_by_name($dm_name)->_isa_metadata;
803 my $from_attr = $source_class->meta->find_attribute_by_name($attr_name);
805 confess("${attr_name} is not writeable and can not be reflected")
806 unless $from_attr->get_write_method;
810 isa => $from_attr->_isa_metadata,
811 required => $from_attr->is_required,
812 ($from_attr->is_required
813 ? () : (clearer => "clear_$attr_name}")),
814 predicate => "has_${attr_name}",
817 if ($attr_opts{required}) {
818 if($from_attr->has_default) {
819 $attr_opts{lazy} = 1;
820 $attr_opts{default} = $from_attr->default;
822 $attr_opts{lazy_fail} = 1;
826 #test for relationships
827 my $constraint_is_ArrayRef =
828 $from_attr->type_constraint->name eq 'ArrayRef' ||
829 $from_attr->type_constraint->is_subtype_of('ArrayRef');
831 my $source = $source_class->result_source_instance;
832 if (my $rel_info = $source->relationship_info($attr_name)) {
833 my $rel_accessor = $rel_info->{attrs}->{accessor};
835 if($rel_accessor eq 'multi' && $constraint_is_ArrayRef) {
836 confess "${attr_name} is a rw has_many, this won't work.";
837 } elsif( $rel_accessor eq 'single') {
838 $attr_opts{valid_values} = sub {
839 shift->target_model->result_source->related_source($attr_name)->resultset;
842 } elsif ( $constraint_is_ArrayRef && $attr_name =~ m/^(.*)_list$/) {
844 my $link_table = "links_to_${mm_name}_list";
845 my ($hm_source, $far_side);
846 eval { $hm_source = $source->related_source($link_table); }
847 || confess "Can't find ${link_table} has_many for ${mm_name}_list";
848 eval { $far_side = $hm_source->related_source($mm_name); }
849 || confess "Can't find ${mm_name} belongs_to on ".$hm_source->result_class
850 ." traversing many-many for ${mm_name}_list";
852 $attr_opts{default} = sub { [] };
853 $attr_opts{valid_values} = sub {
854 shift->target_model->result_source->related_source($link_table)
855 ->related_source($mm_name)->resultset;
859 #print STDERR "\n" .$attr_name ." - ". $object . "\n";
860 #print STDERR Dumper(\%attr_opts);
864 implements _load_or_create => as {
865 my ($self, $class, $base) = @_;
866 my $meta = $self->_maybe_load_class($class) ?
867 $class->meta : $base->meta->create($class, superclasses => [ $base ]);
871 implements _maybe_load_class => as {
872 my ($self, $class) = @_;
873 my $file = $class . '.pm';
875 my $ret = eval { Class::MOP::load_class($class) };
876 if ($INC{$file} && $@) {
877 confess "Error loading ${class}: $@";
886 #--------#---------#---------#---------#---------#---------#---------#---------#
891 Reaction::InterfaceModel::Reflector::DBIC -
892 Automatically Generate InterfaceModels from DBIx::Class models
896 The InterfaceModel reflectors are classes that are meant to aid you in easily
897 generating Reaction::InterfaceModel classes that represent their underlying
898 DBIx::Class domain models by introspecting your L<DBIx::Class::ResultSource>s
899 and creating a collection of L<Reaction::InterfaceModel::Object> and
900 L<Reaction::InterfaceModel::Collection> classes for you to use.
902 The default base class of all Object classes will be
903 L<Reaction::InterfaceModel::Object> and the default Collection type will be
904 L<Reaction::InterfaceModel::Collection::Virtual::ResultSet>.
906 Additionally, the reflector can create InterfaceModel actions that interact
907 with the supplied L<Reaction::UI::Controller::Collection::CRUD>, allowing you
908 to easily set up a highly customizable CRUD interface in minimal time.
910 At this time, supported collection actions consist of:
914 =item B<> L<Reaction::INterfaceModel::Action::DBIC::ResultSet::Create>
916 Creates a new item in the collection and underlying ResultSet.
918 =item B<> L<Reaction::INterfaceModel::Action::DBIC::ResultSet::DeleteAll>
920 Deletes all the items in a collection and it's underlying resultset using
925 And supported object actions are :
929 =item B<Update> - via L<Reaction::INterfaceModel::Action::DBIC::Result::Update>
931 Updates an existing object.
933 =item B<Delete> - via L<Reaction::INterfaceModel::Action::DBIC::Result::Delete>
935 Deletes an existing object.
941 package MyApp::IM::TestModel;
942 use base 'Reaction::InterfaceModel::Object';
944 use Reaction::InterfaceModel::Reflector::DBIC;
945 my $reflector = Reaction::InterfaceModel::Reflector::DBIC->new;
948 $reflector->reflect_schema
950 model_class => __PACKAGE__,
951 schema_class => 'MyApp::Schema',
954 =head2 Selectively including and excluding sources
956 #reflect everything except for the FooBar and FooBaz classes
957 $reflector->reflect_schema
959 model_class => __PACKAGE__,
960 schema_class => 'MyApp::Schema',
961 sources => [-exclude => [qw/FooBar FooBaz/] ],
963 sources => [-exclude => qr/(?:FooBar|FooBaz)/,
965 sources => [-exclude => [qr/FooBar/, qr/FooBaz/],
968 #reflect only the Foo family of sources
969 $reflector->reflect_schema
971 model_class => __PACKAGE__,
972 schema_class => 'MyApp::Schema',
976 =head2 Selectively including and excluding fields in sources
978 #Reflect Foo and Baz in their entirety and exclude the field 'avatar' in the Bar ResultSource
979 $reflector->reflect_schema
981 model_class => __PACKAGE__,
982 schema_class => 'MyApp::Schema',
983 sources => [qw/Foo Baz/,
984 [ Bar => {attributes => [[-exclude => 'avatar']] } ],
985 # or exclude by regex
986 [ Bar => {attributes => [-exclude => qr/avatar/] } ],
987 # or simply do not include it...
988 [ Bar => {attributes => [qw/id name description/] } ],
994 =head2 make_classes_immutable
996 =head2 object_actions
998 =head2 collection_actions
1000 =head2 default_object_actions
1002 =head2 default_collection_actions
1004 =head2 builtin_object_actions
1006 =head2 builtin_collection_actions
1012 =head2 _all_object_actions
1014 =head2 _all_collection_actions
1016 =head2 dm_name_from_class_name
1018 =head2 dm_name_from_source_name
1020 =head2 class_name_from_source_name
1022 =head2 class_name_for_collection_of
1026 =head2 parse_reflect_rules
1028 =head2 merge_reflect_rules
1030 =head2 reflect_schema
1032 =head2 _compute_source_options
1036 =head2 reflect_source
1038 =head2 reflect_source_collection
1040 =head2 reflect_source_object
1042 =head2 reflect_source_object_attribute
1044 =head2 parameters_for_source_object_attribute
1046 =head2 reflect_source_action
1048 =head2 parameters_for_source_object_action_attribute
1052 Allow the reflector to dump the generated code out as files, eliminating the need to
1053 reflect on startup every time. This will likely take quite a bit of work though. The
1054 main work is already in place, but the grunt work is still left. At the moment there
1055 is no closures that can't be dumped out as code with a little bit of work.
1059 See L<Reaction::Class> for authors.
1063 See L<Reaction::Class> for the license.