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author | David Rothstein <drothstein@gmail.com> | 2012-07-29 16:05:06 -0400 |
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committer | David Rothstein <drothstein@gmail.com> | 2012-07-29 16:05:06 -0400 |
commit | 331a3756c369eb4f08272a7a5721a13fd841dfae (patch) | |
tree | 13fcfcf5f498c732bf4f95ee12bb2f6bc4c280c0 /includes | |
parent | 568611ec397a2fb663988b04cf9105af68d4a1ba (diff) | |
download | brdo-331a3756c369eb4f08272a7a5721a13fd841dfae.tar.gz brdo-331a3756c369eb4f08272a7a5721a13fd841dfae.tar.bz2 |
Issue #811542 by David_Rothstein, attiks, thekevinday, effulgentsia, chx: Fixed Regression: Optional radio buttons with an empty, non-NULL default value led to an illegal choice error when none were selected.
Diffstat (limited to 'includes')
-rw-r--r-- | includes/form.inc | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/includes/form.inc b/includes/form.inc index bea4914b0..12d90053d 100644 --- a/includes/form.inc +++ b/includes/form.inc @@ -2351,30 +2351,27 @@ function form_type_tableselect_value($element, $input = FALSE) { */ function form_type_radios_value(&$element, $input = FALSE) { if ($input !== FALSE) { - // There may not be a submitted value for multiple radio buttons, if none of - // the options was checked by default. If there is no submitted input value - // for this element (NULL), _form_builder_handle_input_element() - // automatically attempts to use the #default_value (if set) or an empty - // string (''). However, an empty string would fail validation in - // _form_validate(), in case it is not contained in the list of allowed - // values in #options. - if (!isset($input)) { - // Signify a garbage value to disable the #default_value handling and take - // over NULL as #value. - $element['#has_garbage_value'] = TRUE; - // There was a user submission so validation is a must. If this element is - // #required, then an appropriate error message will be output. While an - // optional #type 'radios' does not necessarily make sense from a user - // interaction perspective, there may be use-cases for that and it is not - // the job of Form API to artificially limit possibilities. + // When there's user input (including NULL), return it as the value. + // However, if NULL is submitted, _form_builder_handle_input_element() will + // apply the default value, and we want that validated against #options + // unless it's empty. (An empty #default_value, such as NULL or FALSE, can + // be used to indicate that no radio button is selected by default.) + if (!isset($input) && !empty($element['#default_value'])) { $element['#needs_validation'] = TRUE; } - // The value stays the same, but the flags above will ensure it is - // processed properly. return $input; } - elseif (isset($element['#default_value'])) { - return $element['#default_value']; + else { + // For default value handling, simply return #default_value. Additionally, + // for a NULL default value, set #has_garbage_value to prevent + // _form_builder_handle_input_element() converting the NULL to an empty + // string, so that code can distinguish between nothing selected and the + // selection of a radio button whose value is an empty string. + $value = isset($element['#default_value']) ? $element['#default_value'] : NULL; + if (!isset($value)) { + $element['#has_garbage_value'] = TRUE; + } + return $value; } } |