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02-24-2009, 11:33 AM

[eluser]huston[/eluser]
I am new to CodeIgniter and was frustrated by this same issue. I have been testing a different approach which seems to be working so far.

First I extended the CI_Form_validation class to setup the _field_data when the request is not a POST. Then I added a method, set_default_value, to set the default values for the fields in _field_data.

Code:
class MY_Form_validation extends CI_Form_validation {

    function CI_Form_validation($rules = array()) {

        parent::CI_Form_validation($rules);

    }

    function set_default_value($data, $value = null) {

        if (is_array($data)) {

            foreach ($this->_field_data as $field => $row) {        

                if ($row['is_array'] == TRUE) {

                    $this->_field_data[$field]['postdata'] = $this->_reduce_array($data, $row['keys']);

                } else {

                    if (isset($data[$field]) AND $data[$field] != "") {

                        $this->_field_data[$field]['postdata'] = $data[$field];

                    }

                }

            }

        } else {

            if (isset($this->_field_data[$data])) {

                $this->_field_data[$data]['postdata'] = $value;

            }

        }

    }

    function set_rules($field, $label = '', $rules = '')

    {

        if (count($_POST) != 0) {

            parent::set_rules($field, $label, $rules);

        } else {

            if (is_array($field)) {

                foreach ($field as $row) {

                    if ( ! isset($row['field'])) {

                        continue;

                    }

                    $this->set_rules($row['field']);

                }

                return;

            }

            if ( ! is_string($field)) {

                return;

            }

            $this->_field_data[$field] = array('postdata' => NULL);

        }

    }

}

Then I added a call to set_default_value to my controller to set the current value for a field.

Code:

$this->form_validation->set_default_value('email', '[email protected]');

Here is the example from the CI Form Validation documentation with this code added.

form.php:

Code:

class Form extends Controller {

    

    function index()

    {

        $this->load->helper(array('form', 'url'));

        

        $this->load->library('form_validation');

        

        $this->form_validation->set_rules('username', 'Username', 'trim|required|min_length[5]|max_length[12]|xss_clean');

        $this->form_validation->set_rules('password', 'Password', 'trim|required|matches[passconf]|md5');

        $this->form_validation->set_rules('passconf', 'Password Confirmation', 'trim|required');

        $this->form_validation->set_rules('email', 'Email', 'trim|required|valid_email');



        $this->form_validation->set_default_value('email', '[email protected]');



        if ($this->form_validation->run() == FALSE)

        {

            $this->load->view('myform');

        }

        else

        {

            $this->load->view('formsuccess');

        }

    }

}

And the code for the view remains unchanged from the CI documentation.

myform.php:

Code:
&lt;html&gt;

&lt;head&gt;

&lt;title&gt;My Form&lt;/title&gt;

&lt;/head&gt;

&lt;body&gt;

&lt;?php echo validation_errors(); ?&gt;

&lt;?php echo form_open('form'); ?&gt;

<h5>Username</h5>

&lt;input type="text" name="username" value="&lt;?php echo set_value('username'); ?&gt;" size="50" /&gt;

<h5>Password</h5>

&lt;input type="text" name="password" value="&lt;?php echo set_value('password'); ?&gt;" size="50" /&gt;

<h5>Password Confirm</h5>

&lt;input type="text" name="passconf" value="&lt;?php echo set_value('passconf'); ?&gt;" size="50" /&gt;

<h5>Email Address</h5>

&lt;input type="text" name="email" value="&lt;?php echo set_value('email'); ?&gt;" size="50" /&gt;

<div>&lt;input type="submit" value="Submit" /&gt;&lt;/div>

&lt;/form&gt;

&lt;/body&gt;

&lt;/html&gt;