Is it possible to avoid repetitive validation code?

[Michael Fung]

Hi All,

I am trying out Mojolicious::Validator. It is very elegant. But, if many actions take a optional "page" parameter, then I need to include something like the following for all these actions.

sub action1 {
  ...

  $validation->optional('page')->num(1,100);

Is there a way to avoid this repetition while using Mojolicious::Validator?

Thanks,

Michael

[Jan Henning Thorsen]

Yes. Put it in a helper:

$app->helper("validate.page" => sub { shift->validaton->optional('page')->num(1, 100) })

and use it as:

$c->validate->page;

Or you could also route condition or a "under route" where you add the validation before your action is called:

* http://mojolicious.org/perldoc/Mojolicious/Guides/Routing#Under

* http://mojolicious.org/perldoc/Mojolicious/Guides/Routing#Conditions

* http://mojolicious.org/perldoc/Mojolicious/Guides/Routing#Adding-conditions

[Michael Fung]

Hi Jan, thanks! I will borrow the concept and try to make it works like:

sub action1 {
  ...
  $c->check_required(qw/node token/);
  $c->check_optional(qw/page/);