function mathfield_mathfield_get_token_value_list_alter in Math Field 7

Implements hook_mathfield_get_token_value_MODULE_alter() for the list.module.

Related topics

File

./mathfield.module, line 757

Adds a dynamic math expression field.

Code

function mathfield_mathfield_get_token_value_list_alter(&$value, $context) {

  // Only support numeric list types.
  if (!in_array($context['field']['type'], array(
    'list_integer',
    'list_float',
  ))) {
    return;
  }

  // @todo: Support multivalue fields.
  if ($context['field']['cardinality'] != 1 || $context['delta'] > 0) {
    return;
  }
  $values = $context['form_state']['values'];
  $field_name = $context['field_name'];
  $language = $context['element']['#language'];
  $delta = $context['delta'];
  $column = $context['column'];

  // List value is at $values[$field_name][$language] on initial form load and
  // $values[$field_name][$language][$delta][$column] on form submission.
  if (isset($values[$field_name][$language]) && is_numeric($values[$field_name][$language])) {
    $value = $values[$field_name][$language];
  }
  elseif (isset($values[$field_name][$language][$delta][$column]) && is_numeric($values[$field_name][$language][$delta][$column])) {
    $value = $values[$field_name][$language][$delta][$column];
  }
}