[html-formfu] Validation callback

[Dermot]

Hi,

I am trying to validate an item in a Select field. The field is
populated with the first entry as a [0, 'Select a User'] option. I
want to ensure that the user has not forgotten to make a selection
from this Select field and that the Selection is valid. However I am
struggling to get a validation::callback in config to work.


The field is initially populated like this:

my @UsersObjs = $c->model('DB::Users')->all()
my @users;
push(@agents, [ 0,'Select a User']);
foreach (sort {$a->name cmp $b->name}  @UsersObjs) {
      push(@agents, [$_->user_id, $_->name]);
}
my $select = $form->get_element({ type => 'Select'});
$select->options(\@users);


This is how my config file looks at the moment:

- type: Select
  name: agent
  label: For Agent
  attributes:
    title: You must select at least one user
  validators:
   - type: Callback
     callback: "MyApp::Controller::Submissions::user_validator"
- type: Submit
  name: submit
  value: Add


And this is the package that contains the validator.

package MyApp::Controller::Submissions;

use strict;
use warnings;
use parent 'Catalyst::Controller::HTML::FormFu'

sub user_validator : Local {
  my ( $val, $params) = @_;
  print STDERR "In user validator with $val and $params\n";
  return 1 if $val != 0;
  return;
}

1;


My messages to STDERR are not appearing so the callback cannot be
getting as far a MyApp::Controller::Submission. I have tried using
'main::user_validator' but that doesn't make the link either.

Can anyone tell me what I am missing please?
TIA,
Dp.