function _conditional_fields_element_add_property in Conditional Fields 7.3

Helper function to add a property/value pair to a render array safely without overriding any pre-existing value.

Parameters

$position: 'append' if $value should be inserted at the end of the $element[$property] array, any other value to insert it at the beginning.

2 calls to _conditional_fields_element_add_property()

conditional_fields_attach_dependency in ./conditional_fields.module

Attaches a single dependency to a form.

conditional_fields_form_after_build in ./conditional_fields.module

after_build callback for forms with dependencies.

File

./conditional_fields.module, line 814

Define dependencies between fields based on their states and values.

Code

function _conditional_fields_element_add_property(&$element, $property, $value, $position = 'prepend') {

  // Avoid overriding default element properties that might not yet be set.
  if (!isset($element[$property])) {
    $element[$property] = isset($element['#type']) ? element_info_property($element['#type'], $property, array()) : array();
  }
  if (in_array($value, $element[$property])) {
    return;
  }
  switch ($position) {
    case 'append':
      $element[$property] = array_merge($element[$property], (array) $value);
      break;
    case 'prepend':
    default:
      $element[$property] = array_merge((array) $value, $element[$property]);
      break;
  }
}