Codeigniter Why re-populating form on failed validation after submitting?

1 set_value () not re-populating
2 mistake
- 2.1 controller
- 2.2 view
3 correct
- 3.1 controller
- 3.2 view

set_value () not re-populating

In CodeIgniter, I had faced the form validation problem .

Specifically , the problem is set_value () not re-populating.

I ‘ve found what was the problem to read some of the questions and answers of Stackoverflow.

I was in the wrong position to write a set_value ().

I had put the source code . Try to reference .

This article I look forward to helping with someone 🙂

mistake

controller


class Form_test extends CI_Controller {

    public function index()
    {
        $this->load->database();
        $this->load->helper(array('url'));
        $this->load->library('form_validation');

        $config = array(
            array(
                'field' => 'username',
                'label' => 'User name',
                'rules' => 'trim|required|min_length[5]|max_length[20]|is_unique[sc_users.username]',
            ),
            array(
                'field'  => 'password',
                'label'  => 'Password',
                'rules'  => 'trim|required|min_length[8]',
                'errors' => array(
                    'required' => '%s is required!',
                ),
            ),
        );
        $this->form_validation->set_rules($config);

        $this->data['username'] = array(
            'name'  => 'username',
            'id'    => 'username',
            'type'  => 'text',
            'value' => $this->form_validation->set_value('username'),
        );
        $this->data['password'] = array(
            'name'  => 'password',
            'id'    => 'password',
            'type'  => 'text',
            'value' => $this->form_validation->set_value('password'),
        );


        if ($this->form_validation->run() == TRUE)
        {
            redirect('form_test/success');
        }
        else
        {
            $this->load->view('form_test', $this->data);
        }

	}

	public function success()
    {
        $this->load->helper(array('url'));
        $this->load->view('formsuccess');
    }

}

view


<html>
    <head>
        <title>My Form</title>
    </head>
    <body>
        <?php echo validation_errors(); ?>
        <?php echo form_open('form_test'); ?>
        <h5>Username</h5>
        <?php echo form_input($username);?>
        <h5>Password</h5>
        <?php echo form_input($password);?>
        <div><?php echo form_submit('submit', 'Submit');?></div>
        </form>
    </body>
</html>

correct

controller


class Form_test extends CI_Controller {

    public function index()
    {
        $this->load->database();
        $this->load->helper(array('url'));
        $this->load->library('form_validation');

        $config = array(
            array(
                'field' => 'username',
                'label' => 'User name',
                'rules' => 'trim|required|min_length[5]|max_length[20]|is_unique[sc_users.username]',
            ),
            array(
                'field'  => 'password',
                'label'  => 'Password',
                'rules'  => 'trim|required|min_length[8]',
                'errors' => array(
                    'required' => '%s is required!',
                ),
            ),
        );
        $this->form_validation->set_rules($config);




        if ($this->form_validation->run() == TRUE)
        {
            redirect('form_test/success');
        }
        else
        {
            $this->data['username'] = array(
                'name'  => 'username',
                'id'    => 'username',
                'type'  => 'text',
                'value' => $this->form_validation->set_value('username'),
            );
            $this->data['password'] = array(
                'name'  => 'password',
                'id'    => 'password',
                'type'  => 'text',
                'value' => $this->form_validation->set_value('password'),
            );

            $this->load->view('form_test', $this->data);
        }

	}

	public function success()
    {
        $this->load->helper(array('url'));
        $this->load->view('formsuccess');
    }

}

view


<html>
    <head>
        <title>My Form</title>
    </head>
    <body>
        <?php echo validation_errors(); ?>
        <?php echo form_open('form_test'); ?>
        <h5>Username</h5>
        <?php echo form_input($username);?>
        <h5>Password</h5>
        <?php echo form_input($password);?>
        <div><?php echo form_submit('submit', 'Submit');?></div>
        </form>
    </body>
</html>