jreviews:comment_discussion_form.validation

Allows adding custom validation rules to the comment discussion submission form validator.

You need to have a working knowledge of Hooks before you get started.

#Parameters

#Boilerplate Code

Use the boilerplate code to start using the action, and add your own logic or echo output.

fwd_add_action('jreviews:comment_discussion_form.validation', function($validator, $creating)
{
    // Execute action or echo output
}, 20, 2);

The , 20, N after your callback are the hook priority and the number of arguments your callback accepts. By default, a hook passes your callback only its first argument; for a filter, that is the value being filtered, so a simple function($value) { ... } needs nothing extra. If your callback declares more parameters, such as function($value, $listing) { ... }, you must add N (the parameter count, 2 here). Because N is the fourth argument to fwd_add_filter() or fwd_add_action(), you must also pass the priority (20 is the default). Leaving these off when your callback expects extra parameters causes a Too few arguments to function ... fatal error.

#Examples

• Set Maximum Length for Discussion Comments

#Set Maximum Length for Discussion Comments

Limit discussion comments to 500 characters.

fwd_add_action('jreviews:comment_discussion_form.validation', function($validator, $creating)
{
    $validator->after(function ($validator) {
        $text = strip_tags($validator->getData()['text'] ?? '');
        
        if (mb_strlen($text) > 500) {
            $validator->errors()->add('text', 'Discussion comments cannot exceed 500 characters');
        }
    });
}, 20, 2);

#Source Files

• app/Http/Site/Yoyo/Discussion/CommentDiscussions.php