If form validation fails - forms

Question

I want to redirect people to a certain page if the form validations fails. However, I can’t quite figure out how.
If i redirect people at the REDIRECT HERE comment below, it also redirects when it loads up the form and causes a endless loop.
public function create() {
$this->form_validation->set_rules('email_adress', 'E-mail', 'required|valid_email|is_unique[users.email_adress]');
if ($this->form_validation->run() !== FALSE) {
// PASSED
}
else {
// REDIRECT HERE
}
$this->load->view('user_register_view');
}
How can I achieve this?

Answer 1

You would redirect like so:
redirect('insert_URI_here');
Or if you are passing it to another method in the same controller you could just do :
$this->method_name();
However, if you just drop that in your else statement, user_register_view will not load because $this->form_validation->run() will return false either on validation error or non submission of the form.
What you will have to do is add another check to look for validation errors. If validation has failed and there are no validation errors, then your form hasn't been submitted.
So you could do something like this:
public function create() {
$this->form_validation->set_rules('email_adress', 'E-mail', 'required|valid_email|is_unique[users.email_adress]');
if(($this->form_validation->run() == FALSE) && ($this->form_validation->error_string() == ''));
//form not submitted yet
$this->load->view('user_register_view');
else if ($this->form_validation->run()) {
// PASSED
} else {
//Validation errors
redirect('insert_URI_here');
}
}
You will have to play around with it. I think $this->form_validation->error_string() should return an empty string if not submitted, but it might be a null value or a false (sorry can't remember off the top of my head).