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I have an exposed filter form, and its default widgets are textfields. I'd like to change them to selects based on values from database. I have tried hook_form_alter and hook_form_views_exposed_form_alter, but get an error:

An illegal choice has been detected. Please contact the site administrator.

The code I used to change the widget is like this and I've tried #validate option.

$form['field_address_province'] = array(
        '#type' => 'select',
        '#options' => $province_options,
        '#validate' => true,
        '#description' => 'Select address',
    );

Edit:

Sorry for the lack of infomation. The $province_options is an array like

Array
(
    [0] => Please Select
    [6] => Area1
    [7] => Area2
    [2] => Area3
)
  • what is the return value of $province_options array? – xurshid29 Dec 9 '13 at 12:35
  • show the content inside the $province_options array. – ARUN Dec 9 '13 at 12:44
  • 1
    The first key must be empty string. Did you try to add options like this?: Array ( '' => Please Select //EMPTY STRING 6 => Area1 7 => Area2 2 => Area3 ) – xurshid29 Dec 9 '13 at 13:21
  • 1
    i tested this kind of thing and found that when you try to switch a exposed widget field you need to provide an array with the empty first key, if it is checkboxes or radios, if new widget will be a select than you need to provide an array with the 'All' first key – xurshid29 Dec 9 '13 at 13:34
  • @xurshid29 Thank you, it works and the error disappeared. But '#default_value' option still doesn't work. Btw, is there any reference that show this "empty string" thing? This is the first time that I know empty string can be used as hash key in php... – leetom Dec 9 '13 at 16:02
2

i tested this kind of thing and found that when you try to switch a exposed widget field you need to provide an array with the empty first key, if it is checkboxes or radios; if new widget will be a select then you need to provide an array with the 'All' first key. E.g.:

//Suppose that you have a default input widget which you want to change to select widget.
//We will get the values which we want our new select widget will get as options:
$opts = array(
  'first_key' => 'First value',
  'sec_key' => 'Second value',
);

// Then we will add required 'All' first key:
$options = array('All' => 'Choose a value') + $opts;

// Then we will create our new select widget
$form['YOUR_FIELD_NAME'] = array(
     '#type' => 'select',
     '#title' => t('MY TITLE'),
     '#options' => $options,
   );
|improve this answer|||||
  • It seems like 'All' still get the ERROR. I still have to use EMPTY STRING as key. – leetom Dec 11 '13 at 12:45
  • @leetom I don't know why it is happening, but in my case select widget gets "All" as first option value, e.g.: <select id="edit-field-adv-mark-tid" class="form-select" name="field_adv_mark_tid" tabindex="-1"> <option class="" value="All">--Выберите</option> <option class="" value="438">Marka 1</option> <option class="" value="439">Marka 2</option> <option class="" value="1190">Marka 6</option> <option class="" value="1194">Marka 7</option> </select> – xurshid29 Dec 11 '13 at 12:54
  • @leetom if I change that value then I get that ERROR, like "An illegal choice has been detected. Please contact the site administrator." – xurshid29 Dec 11 '13 at 13:02
  • I wonder what's your views version. I am using views 3.7. I figured out that if I don't set the filter's value (first loading page), then the value is NULL, and NULL isn't in these options unless I add an option with EMPTY STRING as key (aka filter value). If I use 'All', '<Any>', or '-Any-' as the default option's key, I have to set filter's value to it in hook_init. I found this link – leetom Dec 12 '13 at 3:33

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