combining form_dropdown() und set_select()

[eluser]mradlmaier[/eluser]
Hello All,

Does anybody know if and how it is possible to combine the form helper functions form_dropdown() and set_select(), so that the users selection is remembered after form validation?

Michael

[eluser]Erwin Setiawan[/eluser]
In ci 1.7
I know that you want
I used set_value() from form_validation library..
not set_select()
in controller:

Code:

$options = array(
                  'small'  => 'Small Shirt',
                  'med'    => 'Medium Shirt',
                  'large'   => 'Large Shirt',
                  'xlarge' => 'Extra Large Shirt',
                );

then in view:

Code:

form_dropdown('shirts', $options, 'large');

change 'larger' to set_value('shirts')
so your code will be:

Code:

form_dropdown('shirts', $options, set_value('shirts'));

Don't forget to add validation rules on shirts dropdown.
Hope it useful for you

[eluser]mradlmaier[/eluser]
Hi,

I already run my own validation now. But I gave your proposal a try, because it sounds more elegant and involves less code. But unfortunateley it does not work (though I do not get an error message, just an empty page).
How do you setup a validation rule for the select element? Validating a select element sounds odd, but the first option displays "Please choose...", so I need to make sure that the first option is not selected...
As I mentioned already, I run my own validation scheme now, which works, but I would prefer to stick to the CodeIgniter validation, because it is more elegant, and less code...

Michael

[eluser]Erwin Setiawan[/eluser]
Did you add

Code:

$this->form_validation->set_rules('shirts', 'Shirts', 'trim|required');

You must set rules to required for get back your value after submit.

[eluser]coffey[/eluser]
I don't think it is true that you must set an accompanying rule. I do this without and it works in an add/edit scenario

Code:

$selectname = "myselect";
        $options = array(
                    ""=>'Choose',
                    "option1"=>"option1",
                    "option2"=>"option2",
                    "option3"=>"option3"
                    );
        echo form_dropdown( $selectname, $options, set_value( $selectname, $$selectname ) );

Quick, easy and very helpful for large forms

[eluser]Future Webs[/eluser]
[quote author="coffey" date="1228071097"]I don't think it is true that you must set an accompanying rule. I do this without and it works in an add/edit scenario

Code:

$selectname = "myselect";
        $options = array(
                    ""=>'Choose',
                    "option1"=>"option1",
                    "option2"=>"option2",
                    "option3"=>"option3"
                    );
        echo form_dropdown( $selectname, $options, set_value( $selectname, $$selectname ) );

Quick, easy and very helpful for large forms[/quote]


does this also show your initial value during an edit though ?

[eluser]coffey[/eluser]
Yes, as long as you are sending the view a variable with the initial value .....

Code:

$data['myselect']='valueFromDb';
$this->load->view('myview',$data);

also for radio boxes

Code:

$radio="myradio";
echo form_radio($radio, 0, set_value($radio, ($$radio==0)?TRUE:FALSE));

and checkboxes - looks for the variable if its not there (or not =1) it is not checked.

Code:

$box="Monday";
echo form_checkbox($box, "1", set_value($box, (isset($$box)?$$box:0)));

Note: $box .... $$box. '$$box' makes a variable from the value of '$box' as above $box='Monday' - $$box creates $Monday.

[eluser]Future Webs[/eluser]
Heres my example that I got working for a dropmenu

Code:

<?php
$options = array(
    ''              => 'Select Experience',
    'None'          => 'None',
    'Amature'       => 'Amature',
    'Experience'    => 'Experienced',
    'Professinal'   => 'Professional'
    );
echo form_dropdown('experience', $options, set_value('experience', (isset($my_data->experience)) ? $my_data->experience : '')) ;
echo form_error('experience') ;
?>

The thing that was causing a problem though and making me think this did not work was that if I did not have a validation rule set up for this field then it would not remember the choice if a mistake was made on the form etc

Is this how it should work ?

I would have thought that I would not have needed to set a blank validation rule just to get it to remember the selection. I thought it used the POST values

[eluser]coffey[/eluser]
It should work without validation ... /system/helpers/form_helper shows that it looks for the validation object and if it exists sends it there otherwise it just processes the $_POST value.

Works OK with me without any validation rules set .... prize pain in the derriere if it didn't especially with some of my large forms.

[eluser]Future Webs[/eluser]
would anything in my code shown above be causing the issue as i tried with and without the validation and it wouldn't work without