Including image styles in custom module

Question

I was following topic. I can including image style in my custom module. But I have a problem. I can't reinstall module because of following error:

Unable to install Module ABC, image.style.black_white already exists in active configuration.

Can I include an image style in custom module with file config and maybe reinstall module?

Answer 1

Your problem is don't delete image style when uninstall module. So when you reinstall image style already exist. Use can use hook_uninstall to delete image style to finish uninstall: write code in file module_name.install

<?php
use Drupal\image\Entity\ImageStyle;

function module_name_uninstall() {

  ImageStyle::load('image_style_name')->delete();

}

Answer 2

I think you are trying to add a new image style 'black_white' but an image style with the same name already exist.

Solution 1. Delete the image style 'black_white' from /admin/config/media/image-styles.

Solution 2. If your module has a image style configuration file "image.style.black_white.yml" Check or Remove it. Have you already installed / uninstalled the module ?

If you have already install/uninstall this module, try to review uninstall processes to clean up properly.