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+--- Thread: Use a set_rules callback in a libraries (/showthread.php?tid=72263)
Use a set_rules callback in a libraries - xenos92 - 11-28-2018
Hello,
I want to use a custom function to control an image field.
It works if I use it in the same controller with a callback ...
Exemple in my Administration Controller :
PHP Code:
if($config_rules['images'] == true){ $this->form_validation->set_rules('images','images','callback_require_upload');}
function require_upload(){
$CI = $this->CI =& get_instance();
//$CI->load->model('question_model');
$CI->form_validation->set_message('require_upload', "Vous devez uploader une image");
return false;
}
It works.
The problem is that I want to put my validation rule in a Form_validation libraries like this:
PHP Code:
class MY_Form_validation extends CI_Form_validation{
protected $CI;
function __construct($config = array()){
parent::__construct($config);
}
function require_upload(){
$CI = $this->CI =& get_instance();
$CI->form_validation->set_message('require_upload', "Vous devez uploader une image");
return false;
}
}
PHP Code:
if($config_rules['images'] == true){ $this->form_validation->set_rules('images','images','require_upload');}
But I don't understand why it not works ?!
RE: Use a set_rules callback in a libraries - jreklund - 11-28-2018
I don't have the time to write and give you a complete answer. But what you are looking for are this:
https://www.codeigniter.com/userguide3/libraries/form_validation.html#callable-use-anything-as-a-rule
This example uses users_model. So you will have to do similar.
RE: Use a set_rules callback in a libraries - InsiteFX - 11-28-2018
@jreklund, Is correct you can only have a callback in the controller or in the model like he stated.
I put my callbacks in the controller and then link them into my libraries.
controller/callback -> to/method in library
RE: Use a set_rules callback in a libraries - dave friend - 11-28-2018
You can extend CI_Form_validation and define new callbacks there.
Some notes about your implementation of MY_Form_validation.
You do not need to add the property $CI. The parent class CI_Form_validation already has that property and it is accessible in the extending class.
You don't need MY_Form_validation::__construct because it does not do anything besides call parent:: __construct. PHP will call the parent constructor without your help.
In the new callback you don't have to find the instance of form_validation because you're in the instance you're looking for.
All that said, your class should look like this.
PHP Code:
class MY_Form_validation extends CI_Form_validation
{
function require_upload()
{
$this->set_message('require_upload', "Vous devez uploader une image");
return false;
}
}
As you stated, it would be used like this
PHP Code:
if($config_rules['images'] == true){ $this->form_validation->set_rules('images','images','require_upload');}
Not sure why you have the callback always returning false. Maybe you're not done writing it yet?
RE: Use a set_rules callback in a libraries - dave friend - 11-28-2018
(11-28-2018, 08:15 AM)xenos92 Wrote: Exemple in my Administration Controller :
PHP Code:function require_upload(){
$CI = $this->CI =& get_instance();
//$CI->load->model('question_model');
$CI->form_validation->set_message('require_upload', "Vous devez uploader une image");
return false;
}
If that code above is a controller you don't need $CI. Use $this instead. The function get_instance() returns a reference to the controller that is running and that's where you already are. Not that it matters if you extend CI_Form_validation as I suggested. But keep it in mind for future use.