1 package Maypole::Model::CDBI;
2 use base qw(Maypole::Model::Base Class::DBI);
3 use Class::DBI::AsForm;
4 # use Maypole::Form::CDBI;
8 use Class::DBI::FromCGI;
9 use Class::DBI::Loader;
10 use Class::DBI::AbstractSearch;
11 use Class::DBI::Plugin::RetrieveAll;
12 use Class::DBI::Pager;
14 use Lingua::EN::Inflect::Number qw(to_PL);
20 Maypole::Model::CDBI - Model class based on Class::DBI
24 This is a master model class which uses L<Class::DBI> to do all the hard
25 work of fetching rows and representing them as objects. It is a good
26 model to copy if you're replacing it with other database abstraction
29 It implements a base set of methods required for a Maypole Data Model.
30 See L<Maypole::Model::Base> for these:
50 =head1 Additional Actions
56 Unsuprisingly, this command causes a database record to be forever lost.
70 =item stringify_column
76 Given an accessor name as a method, this function returns the class this accessor returns.
83 my ( $self, $r ) = @_;
84 return keys %{ $self->meta_info('has_many') || {} };
88 my ( $self, $r, $accessor ) = @_;
89 my $meta = $self->meta_info;
90 my @rels = keys %$meta;
93 $related = $meta->{$_}{$accessor};
96 return unless $related;
98 my $mapping = $related->{args}->{mapping};
99 if ( $mapping and @$mapping ) {
100 return $related->{foreign_class}->meta_info('has_a')->{$$mapping[0]}->{foreign_class};
103 return $related->{foreign_class};
108 sub do_edit : Exported {
109 my ( $self, $r ) = @_;
110 my $h = CGI::Untaint->new( %{ $r->{params} } );
112 my ($obj) = @{ $r->objects || [] };
115 # We have something to edit
117 $obj->update_from_cgi( $h =>
118 { required => $r->{config}{ $r->{table} }{required_cols} || [], }
126 $self->create_from_cgi( $h =>
127 { required => $r->{config}{ $r->{table} }{required_cols} || [], }
131 warn "$fatal" if $r->debug;
135 if ( my %errors = $fatal ? (FATAL => $fatal) : $obj->cgi_update_errors ) {
137 # Set it up as it was:
138 $r->{template_args}{cgi_params} = $r->{params};
139 $r->{template_args}{errors} = \%errors;
141 undef $obj if $creating;
142 $r->template("edit");
145 $r->{template} = "view";
147 $r->objects( $obj ? [$obj] : []);
150 sub delete : Exported {
151 return shift->SUPER::delete(@_) if caller ne "Maypole::Model::Base";
152 my ( $self, $r ) = @_;
153 $_->SUPER::delete for @{ $r->objects || [] };
154 $r->objects( [ $self->retrieve_all ] );
155 $r->{template} = "list";
159 sub stringify_column {
162 $class->columns("Stringify"),
163 ( grep { /^(name|title)$/i } $class->columns ),
164 ( grep { /(name|title)/i } $class->columns ),
165 ( grep { !/id$/i } $class->primary_columns ),
170 my ( $self, $child ) = @_;
171 $child->autoupdate(1);
172 if ( my $col = $child->stringify_column ) {
173 $child->columns( Stringify => $col );
177 sub search : Exported {
178 return shift->SUPER::search(@_) if caller ne "Maypole::Model::Base";
180 # A real CDBI search.
181 my ( $self, $r ) = @_;
182 my %fields = map { $_ => 1 } $self->columns;
183 my $oper = "like"; # For now
184 my %params = %{ $r->{params} };
185 my %values = map { $_ => { $oper, $params{$_} } }
186 grep { defined $params{$_} && length ($params{$_}) && $fields{$_} }
189 $r->template("list");
190 if ( !%values ) { return $self->list($r) }
191 my $order = $self->order($r);
192 $self = $self->do_pager($r);
196 \%values, ( $order ? { order_by => $order } : () )
200 $r->{template_args}{search} = 1;
204 my ( $self, $r ) = @_;
205 if ( my $rows = $r->config->rows_per_page ) {
206 return $r->{template_args}{pager} =
207 $self->pager( $rows, $r->query->{page} );
209 else { return $self }
213 my ( $self, $r ) = @_;
214 my %ok_columns = map { $_ => 1 } $self->columns;
216 my $order = $q->{order};
217 return unless $order and $ok_columns{$order};
218 $order .= ' DESC' if $q->{o2} and $q->{o2} eq 'desc';
222 sub list : Exported {
223 my ( $self, $r ) = @_;
224 my $order = $self->order($r);
225 $self = $self->do_pager($r);
227 $r->objects( [ $self->retrieve_all_sorted_by($order) ] );
230 $r->objects( [ $self->retrieve_all ] );
235 my ( $class, $config, $namespace, $dsn, $u, $p, $opts ) = @_;
236 $dsn ||= $config->dsn;
237 $u ||= $config->user;
238 $p ||= $config->pass;
239 $opts ||= $config->opts;
241 warn "No DSN set in config" unless $dsn;
242 $config->loader || $config->loader(
243 Class::DBI::Loader->new(
244 namespace => $namespace,
251 $config->{classes} = [ $config->{loader}->classes ];
252 $config->{tables} = [ $config->{loader}->tables ];
253 warn( 'Loaded tables: ' . join ',', @{ $config->{tables} } )
254 if $namespace->debug;
258 my ( $self, $r, $table ) = @_;
259 return $r->config->loader->_table2class($table);
264 my @pcs = $class->primary_columns;
267 @pks{@pcs}=(@{$r->{args}});
268 return $class->retrieve( %pks );
270 return $class->retrieve( $r->{args}->[0] );