Filtering com_content in the backend by url in Joomla 3.3.1

Question

I am trying to filter the article manager in the backend via the url like:

index.php?option=com_content&filter_category_id=18

but it doesn't seem to work. Instead it gives me a warning:

Warning: Attempt to assign property of non-object in /libraries/framework/Joomla/Registry/Registry.php on line 428

Are there any changes on how we could filter the component, or there is a bug?

Answer 1

Looks like the method of doing this has now changed. I have checked this method and it works perfectly. I cant break it at all

Here is an example using published

index.php?option=com_content&view=articles&filter[published]=1

You can also use

• [filter]level
• [filter]author_id

etc

in fact everything that is in the search tools on the article view can be preset using the URL, just get its ID using Google dev tools!

This may be obvious, but just feel like I need to complete the answer in case anyone else looks, but you You can also stack the filters, i.e

index.php?option=com_content&view=articles&filter[category_id]=2&filter[level]=1

Answer 2

Now that the Joomla filters are allowing multiple selections, e.g. in com_content articles list we can filter using multiple categories, the way to achieve the filtering with a _GET query string is like below:

index.php?option=com_content&view=articles&filter[category_id][]=105&filter[category_id][]=146

Essentially, we need to convert the desired filter to an array (when it applies) and then assign multiple.

&filter[category_id][]=105&filter[category_id][]=146