Question

I started to create a new content type with modules Field Group and Field Collection and it’s worked !

But, I would like to add autocomplete fields in my form and I don’t find how to do this. Maybe using a hook_form_alter however I can’t add my custom fields in my field collection.

You know how to do this ?

Thanks a lot

PS: I work with D7

Answer 1

To add an auto_complete to a from field, you need to do the following:

1st: use hook_for_alter() to add the auto_complete path to the text field

function YOUR_MODULE_form_alter(&$form, &$form_state, $form_id)
{
    if($form_id == "YOUR-CONTENT-TYPE_node_form")
    {
        $form['field_YOUR-FIELD']['und'][0]['value']['#autocomplete_path'] = 'my-module/autocomplete/path';
    }
}

2nd: use hook_menu() to define the menu callback you passed as the #autocomplete_path property to the field

function YOUR_MODULE_menu()
{
    $items = array();
    $items['my-module/autocomplete/path'] = array(
    'page callback'     => 'your_module_autocomplete_callback',
    'access callback'   => TRUE,
    'weight'            => 1,
    'type'              => MENU_CALLBACK,
    );
    return $items;
}

3rd and last: add you menu callback function which returns the items to the textfield

function your_module_autocomplete_callback($string)
{
    $items = array();
    $query = db_select('node', 'n');
    $value = $query->fields('n', array('title'));
    $value = $query->condition(db_and()->condition('n.type', 'YOUR_CONTENT_TYPE')->condition('title', '%' . db_like($string) . '%', 'LIKE'))->orderRandom()->execute();

    $i = 0;
    foreach ($value as $val)
    {
        $items[$val->name] = check_plain($val->name);
    }
    print drupal_json_output($items);
    exit();
}

Hope this helps… Muhammad.