[2.4] Call to a member function getChildren() on a non-object

[nathanhornby]

When attempting to login with a user account assigned a custom role I'm getting the following error:

Call to a member function getChildren() on a non-object    
An error occurred in [redacted]/extensions/author_roles/extension.driver.php around line 459

I won't pretend to understand the issue, as after a quick check the item in question is, in fact, an object.

This is on Symphony 2.4.

[nathanhornby]

I'm going to summon a few Symphonists, sorry in advance! (@designermonkey @brendo @nitriques @michael-e @nilshoerrmann) - as I really need to use this extension and it seems completely unmaintained - not sure how likely it is for anyone else to see my cries for help.

I've made some fixes that enable 2.5 compatibility (Author-> to Author()->), but this bug (from 2.4) still hasn't been resolved and I can't work it out.

It all looks fine to me, the error is insistent that it's not an object, but it is. I've tried getting around this in quite a few ways but it always boils back down to this. Oddly I can output the result of $element->getChildren() just fine, it only seems to be an issue when referencing it. I have a feeling a more seasoned PHP person will resolve this quite easily!

If you can quickly point me in the right direction I'm happy to put the PR together. Assuming it's not a bigger job than it seems.

[designermonkey]

If you can show me the stack trace from the error, I can look at it. That function gets passed an element, and I need to see where that element comes from :)

[nathanhornby]

@designermonkey How do I instigate a stack trace myself?

[designermonkey]

It should be listed under the error you've shown?

[nathanhornby]

Ah I see, nope, not in this case :( I just get exactly what's quoted in the original issue.

[designermonkey]

Any page you're on in particular? Or just the login page?

[nathanhornby]

The error is shown after login, so when trying to display a page, i.e. the default section for the user.

The section is one they're allowed to view as well, so it's not that.

[nilshoerrmann]

Do you have Order Entries installed? I had a similar problem on the login page once.

[designermonkey]

Also, try dropping debug_print_backtrace() just inside that function, and log in again.

[nathanhornby]

Do you have Order Entries installed?

I certainly do. Although it'd be pretty hard to test as removing it would involve quite a bit of section editing.

[nathanhornby]

@designermonkey
I dropped:

var_dump(debug_print_backtrace());
exit;

Just inside the findChildren function and get a rather big output - is that what you wanted, anything in particular you needed to see? It's a rather lengthy and difficult to parse output.

[nilshoerrmann]

Try uncommenting the delegate functions in the extension driver.

Am 21.08.2014 um 11:57 schrieb Nathan Hornby notifications@github.com:

I certainly do. Although it'd be pretty hard to test as removing it would involve quite a bit of section editing.

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[nathanhornby]

@nilshoerrmann

Sorry I can't see any functions currently commented out - am I misunderstanding your instruction?

[nilshoerrmann]

Sorry, I meant the other way around: try to comment out the functions referenced by the delegates.