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DataObjectManager Module

Discuss the DataObjectManager module, and the related ImageGallery module.

Moderators: martimiz, UncleCheese, Sean, biapar, Willr, Ingo, swaiba, simon_w

ImageGallery Module Error: [Notice] Trying to get property of non-object


3 Posts   2068 Views


27 May 2009 at 12:57pm Community Member, 20 Posts

Hi all,

I've been using ImageGallery to display a slideshow. Last night I went to add more images to the slideshow using Admin --> Files & Images --> Upload - This is something I've done before successfully, last night when I then went to the slideshow page to link the uploads in the photos tab the images came up as broken (ie they didn't show thumbnails of the images) so I unlinked them. When I then tried to refresh the webpage in my browser I cam up with the following warning:

[Notice] Trying to get property of non-object
GET /costumes/album/

Line 351 in /home/kidscost/public_html/image_gallery/code/ImageGalleryPage.php

342    }
344    public function PrevAlbum()
345    {
346       return $this->adjacentAlbum("prev");
347    }
349    public function AlbumTitle()
350    {
351       return $this->CurrentAlbum()->AlbumName;
352    }
354    public function SingleAlbumView()
355    {
356       if($this->Albums()->Count() == 1) {
357          $this->current_album = $this->Albums()->First();


* ImageGalleryPage_Controller->AlbumTitle()
* call_user_func_array(Array,Array)
Line 409 of ViewableData.php
* ViewableData->XML_val(AlbumTitle,,1)
Line 63 of
* include(/home/kidscost/public_html/silverstripe-cache/
Line 354 of SSViewer.php
* SSViewer->process(ImageGalleryPage_Controller)
Line 346 of SSViewer.php
* SSViewer->process(ImageGalleryPage_Controller)
Line 175 of Controller.php
* Controller->handleAction(HTTPRequest)
Line 107 of RequestHandler.php
* RequestHandler->handleRequest(HTTPRequest)
Line 122 of Controller.php
* Controller->handleRequest(HTTPRequest)
Line 28 of ModelAsController.php
* ModelAsController->handleRequest(HTTPRequest)
Line 277 of Director.php
* Director::handleRequest(HTTPRequest,Session)
Line 121 of Director.php
* Director::direct(costumes/album/)
Line 115 of main.php

I'm using SS 2.3.1 and am assuming I'm using the latest builds of the DOM and ImageGallery modules (I downloaded them about 2 weeks ago). I did have a search on the SS forums and elsewhere and did come across other people having similar issues with galleries but I couldn't find any fixes.


27 May 2009 at 2:17pm 4085 Posts

Yeah, you can't do that. By uploading through the Files & Images section, the files are not being stored properly as ImageGalleryImage and ImageGalleryItem objects.

To do that, you're going to need to upload to a designated folder in your assets section, then use the import feature of the ImageGallery. You could save a whole lot of trouble by just uploading through the ImageGallery interface. :)


27 May 2009 at 4:20pm Community Member, 20 Posts

Hi UncleCheese,

That's how I've uploaded in the past, interesting it's just decided to break this time.... I'll do a clean install of the necessary modules and start again. I had a feeling there were some file ownership issues starting to creep in - so time to start over and do it properly methinks :)