How to add a product image programatically in Magento 2.1

Question

I had a problem adding a product image programatically. Here's the code I used:

$product->setImage('/test.jpg')
    ->setSmallImage('/test.jpg')
    ->setThumbnail('/test.jpg')
    ->addImageToMediaGallery('/test.jpg', array('image','thumbnail','small_image'), false, false);

$product = $productRepository->save($product);

When run, it throws this error:

Uncaught exception 'Magento\Framework\Exception\LocalizedException' with message 'There is no MediaGalleryEntryConverter for given type' in vendor/magento/module-catalog/Model/Product/Attribute/Backend/Media/EntryConverterPool.php:48

when I save product and try to update like this link: $product->save();

Throws this error:

Fatal error:Uncaught InvalidArgumentException: Required parameter 'theme_dir' was not passed in .../vendor/magento/framework/View/Design/Fallback/Rule/Simple.php:61

Any ideas ?

Answer 1

Maybe you should initialize the gallery first:

->setMediaGallery (array('images'=>array (), 'values'=>array ())) 
->addImageToMediaGallery('/test.jpg', array('image','thumbnail','small_image'), false, false);

Answer 2

In your back-end, go to Content > Design > Configuration. Then set the themes of your front-end. Save it. Then the issue should go away.

Cheers,

Renato.

Answer 3

You may check the new product gallery management classes for Magento 2.1 here:

vendor/magento/module-catalog/Model/Product/Gallery/*

Answer 4

I found the solution for if someone needs future, This is theme configuration file problem when I update 2.0.x to 2.1 forgot to update all necessary theme files settings to 2.1, after that my problem solved.