codeigniter form validation on array not form submit - php

Question

i want validate my form input field or you want to say i have an array and i want to validate that array using codeigniter
Example :
i have array like :
$array['obj_type']='sample';
$array['obj_id']='44';
$array['user_id']='34566';
and my form validation config as like :
'validatedata' => array(
array(
'field' => 'obj_type',
'label' => 'No Type Define here',
'rules' => 'required'
),
array(
'field' => 'obj_id',
'label' => 'No any item selected here',
'rules' => 'required|is_natural_no_zero'
),
array(
'field' => 'user_id',
'label' => 'No user logged in',
'rules' => 'required|is_natural_no_zero'
),
),
and when i use form validate its not validate array
if ($this->form_validation->run('validatedata')) {
} else {
echo validation_errors();
}
its print all error which define on on validatedata config array;

Answer 1

i just use
$this->form_validation->set_data($array);
then i validate form
if ($this->form_validation->run('validatedata')) {
echo "sucess";
} else {
echo validation_errors();
}
now its works fine and good.

Answer 2

You have to load form validation library in your controller..
$this->load->library(array('form_validation'));

Answer 3

You have to provide the data to the form_validation library:
$this->form_validation->set_data($array);
and then you can use
$this->form_validation->run('validatedata')
as intended.
If you want to validate multiple arrays, you'll have to call reset_validation() after validating each array.
Check system/libraries/Form_validation.php (around line 255, depending on your version of CI) for more information.