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How to debug easily a custom rule callback?

rules form validation callback

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#1 Edwin K

Edwin K


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Posted 18 January 2018 - 09:56 AM



In my own validation rule callback, i want to check what is the content of each parameters for debugging.

Espacialy the second one in which i put 2 variables: $table and $field.


Here are the rules in the controller:

$table = 'companies';
$field = 'name';
$param = $field.'|'.$table;
$crud->set_rules('name', 'Name', 'trim|required|min_length[2]|max_length[50]|callback_is_unique_id_excluded['.$param.']');

And my callback:

public function is_unique_id_excluded($input, $param){
        echo 'input = '.$input.'<br>';
	echo 'param = '.$param.'<br><br>';

	//extract the field and table names on which  the rule is to apply
	list($field, $table) = explode('|', $param);


But echo functions don't work even followed by a die to stop the validation process. Why?


So what is the best way to find errors in my form validation rule callback?


Thank you.



Also tagged with one or more of these keywords: rules, form validation, callback

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