CODEWITHSUNDEEP
phpformscodeignitervalidation
besrabasant
besrabasant

Reputation: 2850

Passing multiple callback in Code Igniter form validation rules

I want to pass multiple callbacks in codeigniter form validation rules.... but only one of the callbacks work

I am using this syntax in my contoller

$this->form_validation->set_rules(           
                array(
                    'field' => 'field_name',
                    'label' => 'Field Name',
                    'rules' => 'callback_fieldcallback_1|callback_fieldcallback_2[param]',
                    'errors' => array(
                        'fieldcallback_1' => 'Error message for rule 1.',
                        'fieldcallback_2' => 'Error message for rule 2.',
                        )
                    ),
                );

and the callback functions are....

function fieldcallback_1 (){
      if(condition == TRUE){
              return TRUE;
      } else {
              return FALSE;
      }

}

function fieldcallback_2 ($param){
      if(condition == TRUE){
              return TRUE;
      } else {
              return FALSE;
      }

}

Someone please help me out with this problem.... any other solutions regarding passing multiple callbacks in form validation rules are also appreciated...

Upvotes: 2

Views: 1664

Answers (3)

Genki
Genki

Reputation: 489

Use serialize() to pass multiple parameters to the form validation callback:

public function get_form_input() {
    // assemble the parameters into an array, as many as you like
    $aryParams = ['item_1' => $value1, 'item_2' => $item2, 'item_3' => $value3];

    // serialize the array (creates a string)
    $strSerializedArray = serialize($aryParams);

    // pass the string to the callback
    $this->form_validation->set_rules('form_field_name', 'Your Message', 'callback_validate_form_data['.$strSerializedArray.']');
}

// and, the callback function:

public function _validate_form_data($form_field, $strSerializedArray) {

   // convert the string back to an array
    $aryParams = unserialize($strSerializedArray);

    // use the array elements, as needed
    $item_1 = $aryParams['item_1'];
    $item_2 = $aryParams['item_2'];
    $item_3 = $aryParams['item_3'];
}

Upvotes: 0

DFriend
DFriend

Reputation: 8964

All validation routines must have at least one argument which is the value of the field to be validated. So, a callback that has no extra arguments should be defined like this.

function fieldcallback_1($str){
      return ($str === "someValue");
}

A callback that requires two arguments is defined like this

function fieldcallback_2 ($str, $param){
    //are they the same value?
    if($str === $param){
        return TRUE;
     } else {
         $this->form_validation->set_message('fieldcallback_2', 'Error message for rule 2.');
         //Note: `set_message()` rule name (first argument) should not include the prefix "callback_"
         return FALSE;
}

Upvotes: 2

Medet Ahmetson Atabayev
Medet Ahmetson Atabayev

Reputation: 540

Maybe like this?

     $this->form_validation->set_rules(           
            array(
                'field' => 'field_name',
                'label' => 'Field Name',
                'rules' => 'callback_fieldcallback_1[param]'),
     );

   // Functions for rules
   function fieldcallback_1 ($param){
       if(condition == TRUE){
               return fieldcallback_2($param);
       } else {
                $this->form_validation->set_message('callback_fieldcallback_1', 'Error message for rule 1.');

               return FALSE;
       }

 }

 function fieldcallback_2 ($param){
       if(condition == TRUE){
               return TRUE;
       } else {
                $this->form_validation->set_message('callback_fieldcallback_1', 'Error message for rule 2.');
               return FALSE;
       }

 }

Upvotes: 0

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