How to display the error on each fields in codeigniter - php

Question

$this->form_validation->set_rules('username', 'User Name', 'required|min_length[4]|is_unique[users.username]');
$this->form_validation->set_rules('fname', 'Full Name', 'required|min_length[4]');
$this->form_validation->set_rules('user_password', 'Password', 'required|matches[confirm_password]');
$this->form_validation->set_rules('confirm_password', 'Confirm Password', 'required');
$this->form_validation->set_rules('cname', 'College Name', 'required');
$this->form_validation->set_rules('dob', 'Date of Birth', 'required|callback_valid_date');
$this->form_validation->set_rules('addr', 'Address', 'required');
$this->form_validation->set_rules('contact', 'Contact', 'required|min_length[10]|max_length[10]');
$this->form_validation->set_rules('education', 'Education', 'required');
$this->form_validation->set_rules('user_email', 'Email', 'required|valid_email|is_unique[users.email]');
if ($this->form_validation->run() == FALSE)
{
$this->session->set_flashdata('result', validation_errors());
redirect('login/register');
}
else
{
$rr = $this->user->register_user();
$this->session->set_flashdata('result', $rr);
redirect('login/register');
}
}
basically using $this->session->flashdata("result"); to show the result but i want each filed seprately validate i have tried form_error("field name "); but it's not working displaying empty result

Answer 1

Instead of redirecting, try to load the same form if there are any validation errors.
In your controller page.
function your_function(){
// load form helper
$this->load->helper(array('form', 'url'));
// load form validation library
$this->load->library('form_validation');
// validation rules
$this->form_validation->set_rules('username', 'User Name', 'required|min_length[4]|is_unique[users.username]');
$this->form_validation->set_rules('fname', 'Full Name', 'required|min_length[4]');
// check form for validations
if ($this->form_validation->run() == FALSE){
// load the same form/view
$this->load->view('myform');
} else{
// redirect to success page
}
}
In view page: can use the form_error() function to show an error message next to each form field
<?php echo form_error('username'); ?>
<input type="text" name="username" value="<?php echo set_value('username'); ?>" size="50" />
<?php echo form_error('fname'); ?>
<input type="text" name="fname" value="<?php echo set_value('fname'); ?>" size="50" />