If condition not working with CodeIgniter validation - codeigniter

Question

I'm using CodeIgniter! I have 3 radio buttons - to choose role. If you choose one of the three radio buttons, you see different dropdowns. I want to make validation rules - to echo validation errors only on these dropdowns for the radio button you have chosen. I tried with this but it doesn't show me any validation errors.
First, my radio buttons are:
<input type="radio" name="role_id[]" onClick='showHide(this, true)' id="radio1" value="1" />
$data=array(
'name' => 'role_id[]',
'value' => '2',
'id' => 'radio2',
'onclick' => 'showHide(this, true)'
);
echo form_radio($data);
$data=array(
'name' => 'role_id[]',
'value' => '5',
'id' => 'radio5',
'onclick' => 'teachers_show(this, true)'
);
echo form_radio($data);
My controller is:
public function register()
{
​
if ($this->input->post('role_id[]') === 1){
$this->form_validation->set_rules('first_name', First name', 'trim|required');
$this->form_validation->set_rules('last_name', 'Last name', 'trim|required');
$this->form_validation->set_rules('username', 'username', 'trim|required|min_length[6]|max_length[12]|is_unique[users.username]');
$this->form_validation->set_rules('password', 'Password', 'trim|required|min_length[6]');
$this->form_validation->set_rules('password2', 'Confirm password', 'trim|required|matches[password]');
$this->form_validation->set_rules('email', 'Email', 'trim|required|valid_email|is_unique[users.email]');
$this->form_validation->set_rules('location', 'Location', 'trim|required');
$this->form_validation->set_rules('school[]', 'School', 'required');
$this->form_validation->set_rules('class[]', 'Class', 'required');
$this->form_validation->set_rules('role_id[]', 'Role', 'required');
$this->form_validation->set_rules('class_divisions[]', 'Class division', 'required');
$this->form_validation->set_rules('region', 'Region', 'required');
$this->form_validation->set_rules('teacher[]', 'teacher', 'required');
}
​
elseif ($this->input->post('role_id[]') === 2){
$this->form_validation->set_rules('first_name', First name', 'trim|required');
$this->form_validation->set_rules('last_name', 'Last name', 'trim|required');
$this->form_validation->set_rules('username', 'username', 'trim|required|min_length[6]|max_length[12]|is_unique[users.username]');
$this->form_validation->set_rules('password', 'Password', 'trim|required|min_length[6]');
$this->form_validation->set_rules('password2', 'Confirm password', 'trim|required|matches[password]');
$this->form_validation->set_rules('email', 'Email', 'trim|required|valid_email|is_unique[users.email]');
$this->form_validation->set_rules('location', 'Location', 'trim|required');
$this->form_validation->set_rules('school[]', 'School', 'required');
$this->form_validation->set_rules('class[]', 'Class', 'required');
$this->form_validation->set_rules('role_id[]', 'Role', 'required');
$this->form_validation->set_rules('class_divisions[]', 'Class division', 'required');
$this->form_validation->set_rules('region', 'Region', 'required');
}
elseif ($this->input->post('role_id[]') === 5 ){
$this->form_validation->set_rules('all_teachers_show', 'ALL Teachers', 'required');
}
if ($this->form_validation->run()==FALSE)
{
$this->signup();
}
else
{ ​
//register
}
}
If I use something like this:
if ($this->input->post('role_id[]') < 2){​
// validation rules
}
if ($this->input->post('role_id[]') >4 ){​
// validation rules
}
It shows me validation errors but for role_id=1. For role_id=5 shows me validation errors that are for role_id=1.
Could you help me? :) Thanks!

Answer 1

You are passing string 'value' => '2' and trying to compare if identical === to integer 2 which evaluate to FALSE. Cast your input to specified integer and see what have you got after. I.e. (int)$this->input->post('role_id[]') === 2.
public function radiobutton()
{
echo form_open('test/passingthrough');
echo '<input type="radio" name="myradio" value="1" ' . set_radio('myradio', '1', TRUE) . ' />';
echo '<input type="radio" name="myradio" value="2" ' . set_radio('myradio', '2') . ' />';
echo '<input type="radio" name="myradio" value="5" ' . set_radio('myradio', '5') . ' />';
echo form_submit('mysubmit', 'Submit Radio button!');
}
public function passingthrough()
{
$this->form_validation->set_rules('mysubmit', '', 'required');
$this->form_validation->set_rules('myradio', '', 'required');
if ($this->form_validation->run() == FALSE) {
redirect('test/radiobutton', 'refresh');
} else {
echo '<pre>', var_dump($this->input->post('myradio'));
}
}
In this example passed value (and since it is radio, there will be one passed value for sure) will be something you are looking for. But also, if I get you right, you need NULL, FALSE or what ever value for non passed values. So you would have array of all values in your action controller or model, and check it in foreach loop for it:
$possible_values = array(1, 2, 5);
foreach ($possible_values as $p_v) {
if ($this->input->post('role_id') == $p_v) {
//do what do you want with TRUE 'role_id'
} else {
//do what do you want with FALSE 'role_id'
}
}