What steps will reproduce the problem?
1. Create a K2 article with author set to hidden (and php's error reporting is set to notice).
2. View the article in item layout
3. In some cases I got a notice message.

What is the expected output? What do you see instead?
I got 2 notice massages:
Notice: Undefined property: stdClass::$author in (...)\components\com_k2\views\item\view.html.php on line 58
Notice: Trying to get property of non-object in (...)\components\com_k2\views\item\view.html.php on line 58

What version of the product are you using? On what operating system?
2.3

Please provide any additional information below.
The line should be changed as follows for safer execution:
if (isset($item->author) && is_object($item->author->profile) && $item->author->profile->id > 0) {
(or load the author profile in any case in the model's prepare Item method)

Found on (code.google.com/p/joomlaworks/updates/list)

is there any fix available for this?

Jennifer Spencer said:What steps will reproduce the problem? 1. Create a K2 article with author set to hidden (and php's error reporting is set to notice).
2. View the article in item layout
3. In some cases I got a notice message.

What is the expected output? What do you see instead?
I got 2 notice massages:
Notice: Undefined property: stdClass::$author in (...)\components\com_k2\views\item\view.html.php on line 58
Notice: Trying to get property of non-object in (...)\components\com_k2\views\item\view.html.php on line 58

What version of the product are you using? On what operating system?
2.3

Please provide any additional information below.
The line should be changed as follows for safer execution:
if (isset($item->author) && is_object($item->author->profile) && $item->author->profile->id > 0) {
(or load the author profile in any case in the model's prepare Item method)

Found on (code.google.com/p/joomlaworks/updates/list)

I tuned off Error reporting in Joomla! Global configuration under the server tab.... well actually set it up to default which I think is minimal, and doesnt show to the public end viewers. It may show up if you are logged in as an Administrator in the front end.

A patch or hack to this php file would really help though before the next release... any takers?

Same here today after fiddling around with the Item View settings. Setting Error reporting in Joomla to Default solved it for now. Running K2 V2.4.1, patch would help!

I have the same error on the next version 2.4.1

community.getk2.org/forum/topics/undefined-property

Sollution

Just upgraded to 2.4.1 and have the same issue. Adding isset($item->author) fixed it.