Allows to populate drop-down, radio- or checkbox list fields, which have been added with
shop:onExtendExtraOptionForm event.
Usually you do not need to use this event for fields which represent
data relations. But if you want a standard
field (corresponding an integer-typed database column, for example), to be rendered as a drop-down list, you should
handle this event.
The event handler should accept 2 parameters - the field name and a current field value. If the current
field value is -1, the handler should return an array containing a list of options. If the current
field value is not -1, the handler should return a string (label), corresponding the value.
public function subscribeEvents()
{
Backend::$events->addEvent('shop:onExtendExtraOptionModel', $this, 'extend_extra_model');
Backend::$events->addEvent('shop:onExtendExtraOptionForm', $this, 'extend_extra_form');
Backend::$events->addEvent('shop:onGetExtraOptionFieldOptions', $this, 'get_extra_field_options');
}
public function extend_extra_model($model)
{
$model->define_column('x_custom_field', 'Custom field');
}
public function extend_extra_form($model, $context)
{
$model->add_form_field('x_custom_field', 'Color')->renderAs(frm_dropdown)->tab('Option');
}
public function get_extra_field_options($field, $current_key_value=-1)
{
if ($field_name == 'x_custom_field')
{
$options = array(
0 => 'Option 1',
1 => 'Option 2'
);
if ($current_key_value == -1)
return $options;
if (array_key_exists($current_key_value, $options))
return $options[$current_key_value];
}
}
