Thumbnail for collections

[Arbee4ever]

Currently the thumbnail only supports setting the thumbnail to be one specific element in one specific location, I think the ability to instead set a widgets name would be nice. So I could set it to heroImage and have it automatically search for the first element with the heroImage name. And maybe allowing multiple values for the thumbnail property would be nice too, so we could define fallbacks when the first one isn't found.

[kyoshino]

There is already the thumbnail option so you can specify a field name. Doesn’t it work? If you can provide a configuration example, that would be nice.

https://github.com/sveltia/sveltia-cms?tab=readme-ov-file#better-collections

Specify the field name for a thumbnail displayed on the entry list, like thumbnail: featuredImage. A nested field can be specified using dot notation, e.g. images.0.src. If undefined, the name of the first image field is used.

Making it to accept multiple field names (an array) for fallback is possible. I’ll take care of it.

[Arbee4ever]

I know that the thumbnail option exists, but when i have an array and want it to use the first element which is an image inside of a list, I can't do that afaik, because I can only set a specific element with a specific index in the list.

[kyoshino]

Hmm, so you want to write something like images.*.src?

[Arbee4ever]

That could work yes

[kyoshino]

Okay, so I’ll make some changes:

• Make it possible to use a wildcard in the thumbnail option
• Accept an array with the thumbnail option
• Use any (non-nested) image field filled with a path instead of the first image field, if the thumbnail option is not provided
• Solve this issue: Add file widget as secondary type for the image field inference decaporg/decap-cms#5317