X-Git-Url: https://git.decadent.org.uk/gitweb/?a=blobdiff_plain;f=lib%2FMaypole%2FModel%2FCDBI.pm;h=6ae19f53fa12db0ee355dcebb6425e26b30fe256;hb=12d8a77a713d5ed4f08414e5f34e96d45f60e2d3;hp=171c9164b21de239d2dcde9e75f20200eebb2765;hpb=2225b4184a391bab5f1d9498d5b695ba0c2f09f2;p=maypole.git

diff --git a/lib/Maypole/Model/CDBI.pm b/lib/Maypole/Model/CDBI.pm
index 171c916..6ae19f5 100644
--- a/lib/Maypole/Model/CDBI.pm
+++ b/lib/Maypole/Model/CDBI.pm
@@ -1,6 +1,10 @@
 package Maypole::Model::CDBI;
 use base qw(Maypole::Model::Base Class::DBI);
 use Class::DBI::AsForm;
+# use Maypole::Form::CDBI;
+use CGI::Untaint;
+# use Maypole::Form;
+
 use Class::DBI::FromCGI;
 use Class::DBI::Loader;
 use Class::DBI::AbstractSearch;
@@ -8,7 +12,7 @@ use Class::DBI::Plugin::RetrieveAll;
 use Class::DBI::Pager;
 
 use Lingua::EN::Inflect::Number qw(to_PL);
-use CGI::Untaint;
+
 use strict;
 
 =head1 NAME
@@ -17,11 +21,62 @@ Maypole::Model::CDBI - Model class based on Class::DBI
 
 =head1 DESCRIPTION
 
-This is a master model class which uses C<Class::DBI> to do all the hard
+This is a master model class which uses L<Class::DBI> to do all the hard
 work of fetching rows and representing them as objects. It is a good
 model to copy if you're replacing it with other database abstraction
 modules.
 
+It implements a base set of methods required for a Maypole Data Model.
+See L<Maypole::Model::Base> for these:
+
+=over 4
+
+=item adopt
+
+=item class_of
+
+=item do_edit
+
+=item list
+
+=item related
+
+=item setup_database
+
+=item fetch_objects
+
+=back 
+
+=head1 Additional Actions
+
+=over 
+
+=item delete
+
+Unsuprisingly, this command causes a database record to be forever lost.
+
+=item search
+
+The search action 
+
+=back
+
+=head1 Helper Methods
+
+=over 
+
+=item order
+
+=item stringify_column
+
+=item do_pager
+
+=item related_class
+
+Given an accessor name as a method, this function returns the class this accessor returns.
+
+=back
+
 =cut
 
 sub related {
@@ -29,39 +84,91 @@ sub related {
     return keys %{ $self->meta_info('has_many') || {} };
 }
 
-sub do_edit : Exported {
-    my ( $self, $r ) = @_;
-    my $h        = CGI::Untaint->new( %{ $r->{params} } );
-    my $creating = 0;
-    my ($obj) = @{ $r->objects || [] };
-    if ($obj) {
+sub related_class {
+     my ( $self, $r, $accessor ) = @_;
+     my $meta = $self->meta_info;
+     my @rels = keys %$meta;
+     my $related;
+     foreach (@rels) {
+         $related = $meta->{$_}{$accessor};
+         last if $related;
+     }
+     return unless $related;
 
-        # We have something to edit
-        $obj->update_from_cgi( $h =>
-              { required => $r->{config}{ $r->{table} }{required_cols} || [], }
-        );
-    }
-    else {
-        $obj =
-          $self->create_from_cgi( $h =>
-              { required => $r->{config}{ $r->{table} }{required_cols} || [], }
-          );
-        $creating++;
-    }
-    if ( my %errors = $obj->cgi_update_errors ) {
+     my $mapping = $related->{args}->{mapping};
+     if ( $mapping and @$mapping ) {
+       return $related->{foreign_class}->meta_info('has_a')->{$$mapping[0]}->{foreign_class};
+     }
+     else {
+         return $related->{foreign_class};
+     }
+ }
 
+
+sub do_edit : Exported 
+{
+    my ($self, $r, $obj) = @_;
+
+    my $config   = $r->config;
+    my $table    = $r->table;
+    
+    my $required_cols = $config->{$table}->{required_cols} || [];
+    
+    ($obj, my $fatal, my $creating) = $self->_do_update_or_create($r, $obj, $required_cols);
+    
+    # handle errors, if none, proceed to view the newly created/updated object
+    my %errors = $fatal ? (FATAL => $fatal) : $obj->cgi_update_errors;
+    
+    if (%errors) 
+    {
         # Set it up as it was:
-        $r->{template_args}{cgi_params} = $r->{params};
-        $r->{template_args}{errors}     = \%errors;
-        $r->{template}                  = "edit";
-        undef $obj if $creating;    # Couldn't create
+        $r->template_args->{cgi_params} = $r->params;
+        $r->template_args->{errors}     = \%errors;
+
+        undef $obj if $creating;
+        $r->template("edit");
     }
-    else {
-        $r->{template} = "view";
+    else 
+    {
+        $r->template("view");
     }
-    $r->objects( [$obj] );
+    
+    $r->objects( $obj ? [$obj] : []);
 }
 
+# drb - I've (probably temporarily) split this out from do_edit, so it's 
+# reported by Mp::P::Trace
+sub _do_update_or_create
+{
+    my ($self, $r, $obj, $required_cols) = @_;
+    
+    my $fatal;
+    my $creating = 0;
+    my $h = CGI::Untaint->new( %{$r->params} );
+    
+    # update or create
+    if ($obj) 
+    {
+        # We have something to edit
+        eval { $obj->update_from_cgi( $h => {required => $required_cols} ) };
+        $fatal = $@;
+    }
+    else 
+    {
+        eval { 
+            $obj = $self->create_from_cgi( $h => {required => $required_cols} ) 
+        };
+        
+        if ($fatal = $@) 
+        {
+            warn "$fatal" if $r->debug;
+        }
+        $creating++;
+    }
+    
+    return $obj, $fatal, $creating;
+}
+    
 sub delete : Exported {
     return shift->SUPER::delete(@_) if caller ne "Maypole::Model::Base";
     my ( $self, $r ) = @_;
@@ -75,6 +182,7 @@ sub stringify_column {
     my $class = shift;
     return (
         $class->columns("Stringify"),
+        ( grep { /^(name|title)$/i } $class->columns ),
         ( grep { /(name|title)/i } $class->columns ),
         ( grep { !/id$/i } $class->primary_columns ),
     )[0];
@@ -97,7 +205,8 @@ sub search : Exported {
     my $oper   = "like";                                # For now
     my %params = %{ $r->{params} };
     my %values = map { $_ => { $oper, $params{$_} } }
-      grep { $params{$_} and $fields{$_} } keys %params;
+      grep { defined $params{$_} && length ($params{$_}) && $fields{$_} }
+      keys %params;
 
     $r->template("list");
     if ( !%values ) { return $self->list($r) }
@@ -106,7 +215,7 @@ sub search : Exported {
     $r->objects(
         [
             $self->search_where(
-                \%values, ( $order ? { order => $order } : () )
+                \%values, ( $order ? { order_by => $order } : () )
             )
         ]
     );
@@ -124,12 +233,12 @@ sub do_pager {
 
 sub order {
     my ( $self, $r ) = @_;
-    my $order;
     my %ok_columns = map { $_ => 1 } $self->columns;
-    if ( $order = $r->query->{order} and $ok_columns{$order} ) {
-        $order .= ( $r->query->{o2} eq "desc" && " DESC" );
-    }
-    $order;
+    my $q = $r->query;
+    my $order = $q->{order};
+    return unless $order and $ok_columns{$order};
+    $order .= ' DESC' if $q->{o2} and $q->{o2} eq 'desc';
+    return $order;
 }
 
 sub list : Exported {
@@ -145,29 +254,42 @@ sub list : Exported {
 }
 
 sub setup_database {
-    my ( $self, $config, $namespace, $dsn, $u, $p, $opts ) = @_;
+    my ( $class, $config, $namespace, $dsn, $u, $p, $opts ) = @_;
     $dsn  ||= $config->dsn;
     $u    ||= $config->user;
     $p    ||= $config->pass;
     $opts ||= $config->opts;
     $config->dsn($dsn);
+    warn "No DSN set in config" unless $dsn;
     $config->loader || $config->loader(
         Class::DBI::Loader->new(
             namespace => $namespace,
             dsn       => $dsn,
             user      => $u,
             password  => $p,
-            options   => $opts,
+	    %$opts,
         )
     );
     $config->{classes} = [ $config->{loader}->classes ];
     $config->{tables}  = [ $config->{loader}->tables ];
+    warn( 'Loaded tables: ' . join ',', @{ $config->{tables} } )
+      if $namespace->debug;
 }
 
 sub class_of {
     my ( $self, $r, $table ) = @_;
-    return $r->config->loader->_table2class($table);
+    return $r->config->loader->_table2class($table); # why not find_class ?
 }
 
-1;
+sub fetch_objects {
+    my ($class, $r)=@_;
+    my @pcs = $class->primary_columns;
+    if ( $#pcs ) {
+    my %pks;
+        @pks{@pcs}=(@{$r->{args}});
+        return $class->retrieve( %pks );
+    }
+    return $class->retrieve( $r->{args}->[0] );
+}
 
+1;