#6294: Trying to get property of non-object [CORE/cake/libs/xml.php, line 601]
--------------------------+-------------------------------------------------
Reporter: olafnorge | Owner:
Type: Bug | Status: reopened
Priority: Medium | Milestone: 1.2.x.x
Component: Core Libs | Version: 1.2 Final
Severity: Trivial | Resolution:
Keywords: | Php_version: PHP 5
Cake_version: |
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Changes (by olafnorge):
* status: closed => reopened
* resolution: needmoreinfo =>
Comment:
This is an example array for what I'm trying to create xml.
{{{
$xml = array(
array('node' => array(
'tag1' => 'value1',
'tag2' => 'value2',
'tag3' => 'value3',
'tag4' => '',
'tag5' => 35,
),
),
array('node' => array(
'tag1' => 'value1',
'tag2' => 'value2',
'tag3' => 'value3',
'tag4' => array(
'subtag4_1' => 'subvalue4_1',
),
'tag5' => 2,
),
),
);
}}}
Same array as a dump
{{{
Array
(
[0] => Array
(
[node] => Array
(
[tag1] => value1
[tag2] => value2
[tag3] => value3
[tag4] =>
[tag5] => 35
)
)
[1] => Array
(
[node] => Array
(
[tag1] => value1
[tag2] => value2
[tag3] => value3
[tag4] => Array
(
[subtag4_1] => subvalue4_1
)
[tag5] => 2
)
)
)
}}}
I call the construct of the XML-class with the $xml-array as the first
parameter and the second parameter is an array which tells the construct
what the name of the root-element should be (as you can see at my
description above).
The xml will be created correctly but there's always a notice at line 601
as you also can see at my description.
Here is some more code of the xml-library.
{{{
587 if ($tag) {
588 if ($options['whitespace']) {
589 $d .= str_repeat("\t", $depth);
590 }
591
592 $d .= '<' . $this->name();
593 if (count($this->namespaces) > 0) {
594 foreach ($this->namespaces as $key => $val) {
595 $val = str_replace('"', '\"', $val);
596 $d .= ' xmlns:' . $key . '="' . $val . '"';
597 }
598 }
599
600 $parent =& $this->parent();
601 if ($parent->name === '#document' &&
count($parent->namespaces) > 0) {
602 foreach ($parent->namespaces as $key => $val) {
603 $val = str_replace('"', '\"', $val);
604 $d .= ' xmlns:' . $key . '="' . $val . '"';
605 }
606 }
607
608 if (is_array($this->attributes) &&
count($this->attributes) > 0) {
609 foreach ($this->attributes as $key => $val) {
610 $d .= ' ' . $key . '="' .
htmlspecialchars($val, ENT_QUOTES, Configure::read('App.encoding')) . '"';
611 }
612 }
613 }
}}}
Have a look at the lines 600 and 601. The variable ''$parent'' gets the
reference of ''$this->parent()'' assigned. But if there is no such parent
then no reference could be assigned. And if no reference was assigned
there could not be any object. To avoid a call on non existing object I
added the is_object-question to the if-clause. What should I test? Either
there is an object then I can call it's attributes or there isn't an
object and I can't call any function or attributes.
I don't think there's any need for a testcase. I think the bug and the fix
is pretty straight forward.
--
Ticket URL: <https://trac.cakephp.org/ticket/6294#comment:2>
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