symfony: question about a choice widget

Question

Hi,

I have a choice widget in a form:

$years = range(14,130);
$this->widgetSchema['age'] = new sfWidgetFormSchema();
foreach (array('from', 'to') as $value)
{ 
    $this->widgetSchema['age'][$value] = new sfWidgetFormChoice(array(
        'label' => $value,
            'choices' => array_merge(array('' =>  '-'),array_combine($years,$years)))); 
}

If i choose for example 14 and in the action that receives the form is written something like this:

var_dump($valores_widgets['age']['from']);

that shows 0. But I expected 14.

Any idea?

Regards

Javi

Answer 1

Check the documentation of array_merge:

If, however, the arrays contain numeric keys, the later value will not overwrite the original value, but will be appended.

If all of the arrays contain only numeric keys, the resulting array is given incrementing keys starting from zero.

A quick test:

maerlyn@biliskner:~$ php --run '$years=range(14,16);var_dump(array_merge(array("" =>  "-"), array_combine($years,$years)));'

array(4) {
  [""]=>
  string(1) "-"
  [0]=>
  int(14)
  [1]=>
  int(15)
  [2]=>
  int(16)
}

So your $years array gets reindexed during the merge. When using the + operator instead:

maerlyn@biliskner:~$ php --run '$years=range(14,16);var_dump(array("" =>  "-") + array_combine($years,$years));'

array(4) {
  [""]=>
  string(1) "-"
  [14]=>
  int(14)
  [15]=>
  int(15)
  [16]=>
  int(16)
}