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08-11-2009, 02:16 PM

[eluser]intoitdaily[/eluser]
turns out, I was right...

CodeIgniter will not pre-populate your input fields when running form validation, <i>unless</i> you set a rule for that input field in the controller. However, what if there is a field that isn't required in your form, but you still want it to be pre-populated if an error is found elsewhere in the form? Here's the work-around... You have to add your own validation function in the form of a callback ( http://ellislab.com/codeigniter/user-gui...#callbacks ) So here's what I did.

Controller

Code:
function auto()

    {

        $this->form_validation->set_error_delimiters('<span class="error">', '</span>');

        function pass_field() {

            return True;

    }

        $this->form_validation->set_rules('field1', 'Field 1', 'required|alpha');

        $this->form_validation->set_rules('field4', 'Field 4', 'required');

        $this->form_validation->set_rules('field2', '', 'callback_pass_field');

        $this->form_validation->set_rules('field3', '', 'callback_pass_field');

        $this->form_validation->set_rules('field5', 'Field 5', 'required|max_length[12]');

        if ($this->form_validation->run() == False) {

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

            $this->load->view('nav');

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

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

        }

        else {

            // do whatever

        }

    }

View (form)

Code:
&lt;?= form_open(); ?&gt;

    &lt;?= form_fieldset('Field Set'); ?&gt;

        <ol>

            <li><label for="field1">Field 1</label>&lt;?= form_input(array('name' => 'field1', 'size' => '25', 'value' => set_value('field1'))); ?&gt;<span style="padding-left: 10px; padding-right: 10px; color: #f00; font-size: 14px;">*</span>&lt;?= form_error('field1'); ?&gt;</li>

            <li><label for="field2">Field 2</label>&lt;?= form_input(array('name' => 'field2', 'size' => '25', 'value' => set_value('field2'))); ?&gt;<span style="padding-left: 10px; padding-right: 10px; color: #f00; font-size: 14px;">*</span>&lt;?= form_error('field2'); ?&gt;</li>

            <li><label for="field3">Field 3</label>&lt;?= form_input(array('name' => 'field3', 'size' => '25', 'value' => set_value('field3'))); ?&gt;</li>

            <li><label for="field4">Field 4</label>&lt;?= form_input(array('name' => 'field4', 'size' => '25', 'value' => set_value('field4'))); ?&gt;</li>

            <li><label for="field5">Field 5</label>&lt;?= form_input(array('name' => 'field5', 'size' => '25', 'value' => set_value('field5'))); ?&gt;<span style="padding-left: 10px; padding-right: 10px; color: #f00; font-size: 14px;">*</span>&lt;?= form_error('field5'); ?&gt;</li>

        </ol>

        &lt;?= form_submit('submit', 'Submit'); ?&gt;

    &lt;?= form_fieldset_close(); ?&gt;

&lt;?= form_close(); ?&gt;

Notice, in the view I didn't add the print error for the non-required fields. This workaround worked for me. Let me know how it works for you guys.