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get_artefact_metadata


Jawyei Wong's profile picture
Posts: 16

21 February 2017, 11:01 AM

Was trying to get our groupviewimage plugin to work in 16.10.2 today however I noticed that the method get_artefact_metadata() from lib/view.php has been removed. What was the reasoning for this and what would be an alternative to use instead of that method?

Robert Lyon's profile picture
Posts: 360

24 February 2017, 8:10 AM

Hi Jawyei,

It was removed in this commit https://reviews.mahara.org/#/c/6742/7/htdocs/lib/view.php

By the looks of the code you should be able to use  get_artefact_instances() as it does the task that get_artefact_metadata() did plus some extra stuff.

Cheers

Robert

Jawyei Wong's profile picture
Posts: 16

24 February 2017, 11:53 AM

Hi Robert

 

The returned $artefact_instances object's fields are all private. There are no methods I can find to get the field data without modifying lib/view.php. Is there another way to get the properties of each artefact in a view?

 

Jawyei

Robert Lyon's profile picture
Posts: 360

24 February 2017, 12:45 PM

Hi Jawyei,

I note the get_artefact_instances() function also sets the  $this->artefact_metadata as well

So with a View object $view one could try something like:

            $view->get_artefact_instances(); // populate the artefact_metadata
            foreach ($view->get('artefact_metadata') as $metadata) {

                 ... do something with $metadata ...

           }

Let me know if that helps

Cheers

Robert

Jawyei Wong's profile picture
Posts: 16

24 February 2017, 3:48 PM

Hi Robert

 

That method gives me an error of

 

 PHP Fatal error:  Call to a member function get() on a non-object...

 

I noticed that the get_artefact_instances() array already contains the metadata information and using the get() method I can immediate get the information I want.

 

$theView = new View($aViewProperty['id']);

$artefactInView = $theView->get_artefact_instances();

foreach($artefactInView as $anArtefact){ //for each artefact
                            if($anArtefact->get('artefacttype') == 'image'){
                                $artefactID = $anArtefact->get('id'); //if it is an image artefact assign the id and break the loop
                                echo "artefactID=".$artefactID;
                                break;
                            }

...

}

I will see if it can be done for folders (image gallery) later on.


Jawyei

Jawyei Wong's profile picture
Posts: 16

24 February 2017, 4:20 PM

No changes was needed to handle folders. Thanks for your help Robert.

 

Jawyei

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