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Code Issues Releases Wiki Activity

Minor refactor of Page::getFieldSubfieldValue() method

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This commit is contained in:
Ryan Cramer
2019-07-31 09:34:11 -04:00
parent 3cb1f33a97
commit 6479e78288
1 changed files with 30 additions and 13 deletions
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43
wire/core/Page.php
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@@ -1326,22 +1326,39 @@ class Page extends WireData implements \Countable, WireMatchable {
*
*/
protected function getFieldSubfieldValue($key) {
$value = null;
if(!strpos($key, '.')) return null;
if($this->outputFormatting()) {
// allow limited access to field.subfield properties when output formatting is on
// we only allow known custom fields, and only 1 level of subfield
list($key1, $key2) = explode('.', $key);
$field = $this->getField($key1);
if($field && !($field->flags & Field::flagSystem)) {
// known custom field, non-system
// if neither is an API var, then we'll allow it
if(!$this->wire($key1) && !$this->wire($key2)) $value = $this->getDot("$key1.$key2");
}
} else {
// we allow any field.subfield properties when output formatting is off
// we allow any field.subfield properties when output formatting is off
if(!$this->outputFormatting()) return $this->getDot($key);
// allow limited access to field.subfield properties when output formatting is on
// we only allow known custom fields, and only 1 level of subfield
$keys = explode('.', $key);
$key1 = $keys[0];
$key2 = $keys[1];
$field = $this->getField($key1);
if(!$field || ($field->flags & Field::flagSystem)) return null;
// test if any parts of key can potentially refer to API variables
$api = false;
foreach($keys as $k) {
if($this->wire($k)) $api = true;
if($api) break;
}
if($api) return null; // do not allow dereference of API variables
// get first part of value
$value = $this->get($key1);
// then get second part of value
if($value instanceof WireData) {
$value = $value->get($key2);
} else if($value instanceof Wire) {
$value = $this->getDot($key);
}
return $value;
}