[html-formfu] How to best pass the resultset object to DBIC validator callbacks?

[Ascii King]

Thanks, Wolfgang. That did the trick.

Wolfgang Kinkeldei wrote:
> Hi,
>
> Am 04.06.2009 um 21:40 schrieb Ascii King:
>
>> This Validator references a bit of code (validator_unique_url) that 
>> presumably calls the database to check to see if the value is unique. 
>> Would someone be able to show what this code would actually look 
>> like? I have the rest of the validator example from this thread.
>>> Then in MyApp::Schema::ResultSet::Urls,
>>>
>>> use base qw/MyApp::Schema::Base::ResultSet/;
>>> sub validator_unique_url {
>>>   my $value = shift;
>>>   .... how do I get at the DB?
>>> }
>
> I recently did almost the same and it works well. My relevant part of 
> the form looks like this:
>
>   - type: Text
>     name: login
>     label: Login
>     constraints:
>       - Required
>       - type: Callback
>         callback: 'DemoApp::Controller::Login::login_check'
>         message: Already in use
>     filters:
>       - TrimEdges
>
> my callback-sub is like that -- you can obtain the resultset object 
> using your Application class name. DB is my Schema, Person my table.
>
> sub login_check :Private {
>     my $value = shift;
>
>     my $result = DemoApp->model('DB::Person')
>                         ->search({login => $value})
>                         ->single();
>
>     return $result ? 0 : 1;
> }
>
> if you look into HTML::FormFu::Validator::Callback, you can see that 
> the validator coderef is called with the entered value only.
>
>
>> Also, in the following sub, what would be an example of a context? 
>> Would it be 'MyApp::Schema' or 'MyApp::Schema::TableName'?
>
>
>>
>>>>   sub validate_value {
>>>>       my ( $self, $value, $params ) = @_;
>>>>
>>>>       my $c = $self->form->stash->{context};
>>>>
>>>>       return $c->model('DBIC::Urls')->validator_unique_url($value);
>>>>   }
>
>
>
> Regards,
>
> Wolfgang Kinkeldei
>
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>
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