[4.x] Add "Licence / Source" field to relevant media entities

We should defenetly do this, for all projects. We also should have the Imprint view as suggested in #3 by default.

I think a simple Link field should do the job. If the media fields are locked (so we're not able to remove the copyright information by simply removing the new field from content), we probably need a further Checkbox "Show Copyright information right under the image".

Ok, I added the following tasks:

1. Add link field with optional label and optional link for all (relevant) media types
2. Do not show the field by default
3. Add a view or token to list the copyrights for the imprint

and assigned this to me to implement this in an update.

What we could do here, is use an autocomplete field, so it would be easier to prevent duplicates, if the image is used several times and we could maybe use distinct in the imprint?

What we could do here, is use an autocomplete field, so it would be easier to prevent duplicates, if the image is used several times and we could maybe use distinct in the imprint?

To be honest, I can't think of a single time when this has been an issue. Also, link fields with autocomplete doesn't sound like a core feature, so it needs another contrib module?

Much more problematic are the same images in different variations. This would lead to duplicate licence entries. I think views are a better place to prevent this, but with a simple link field we have no reliable way to detect this. So at minimum, we'd need a separate field for the stock photo provider's image ID. So things are getting too complicated.

Conclusion: Ignore duplicates. Nobody cares. They don't cause legal problems.

Added the link field to:
- media_slide
- media_video (only local)
- media_image
- media_vector_image
- media_audio

@thomas.frobieter: Config was now added in the parent issue. Can this be set FIXED or are styling tasks remaining for you?

@thomas.frobieter: Config was now added in the parent issue. Can this be set FIXED or are styling tasks remaining for you?

Hopefully not, the View which prints the copyright values should be a simple HTML list, so.. this should be fine.

Back to NW for the 3.x to 4.x update hooks.