CodeIgniter Validation Not Displaying On Form - php

Question

Another CI Validation Error here. I've tried searching and from what I can see, the code I have is OK. The validation runs - if I just echo out a "Validation Failed" string from the controller, it displays.
But I cannot seem to get it to display in an actual view. Even if I have a single line in the view (ie echo validation_errors(); ), there are no errors output even though it fails validation.
Any pointers would be greatly appreciated :)
Controller
public function add() {
if ($this->form_validation->run('user_add_edit') == FALSE)
{
//Validation failed
$this->load->view('templates/header_generic');
$this->load->view('templates/navigation');
$this->load->view('user/add_user_form');
$this->load->view('templates/footer_generic');
}
else
{
echo "Form validated!";
}
}
View (Partial)
<div class="panel-body">
<?php echo validation_errors(); ?>
<?php echo form_open('user/add'); ?>
<label for="email">
Email Address
</label><br />
<div class="form-group input-group <?php echo null === form_error('email') || is_null(form_error('email')) ? 'form-group has-error' : ''; ?>">
<span class="input-group-addon">#</span>
<?php echo form_input($email_attr, set_value('email')); ?>
</div>
<br />
<?php echo form_error('email');?>
<br />
<?php echo form_fieldset("Password"); ?>
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<?php echo form_fieldset_close(); ?>
<br />
<?php echo form_submit("submit", "Add New User", "class='btn btn-success'"); ?>
</form>
</div>
Form Validation
$config = array(
'user_add_edit' => array(
array(
'field' => 'email',
'label' => 'Email Address',
'rules' => 'trim|required|valid_email|is_unique[user.email]',
'errors' => array(
'required' => 'You must enter a %s',
'valid_email' => '%s is not a valid email address',
'is_unique' => 'This email address already exists'
)
),

Answer 1

Having MY_Form_validation.php improperly set up can mess up with setting of form rules via config file.
Fix
In application/libraries/MY_Form_validation.php - replace your constructor with the below code or just follow the changes below by adding the $config parameter.
function __construct($config = array()){
parent::__construct($config);
$this->CI =& get_instance();
}
It's also a possibility that the value of $config variable is being overwritten that's happening inside application/config/form_validation.php. Check for it as well.
Alternative:
Load the form_validation.php config file from the controller method and pass the relevant config item to set_rules(..) like in the following.
public function add() {
$this->load->config('form_validation');
$this->form_validation->set_rules($this->config->item('user_add_edit'));
if ($this->form_validation->run() == FALSE)
{
//Validation failed
$this->load->view('templates/header_generic');
$this->load->view('templates/navigation');
$this->load->view('user/add_user_form');
$this->load->view('templates/footer_generic');
}
else
{
echo "Form validated!";
}
}