I have another quick question, if I have an active storage `has_many_attached :images` association, how could I go about showing a preview of the first one? Eg it doesn't work the same as a singular file. I tried using a computed field but it didn't like that.

you might be able to use the `external_image` field

Ok, I'll try that and let you know, thanks

```ruby
field 'cover', as: :external_image, link_to_resource: true, only_on: :index do |model|
  helpers.main_app.url_for(model.images.first)
end
```

the external image expects the `src` of the image, so you need to get it from the blog/attachment

`helpers.main_app.url_for(model.images.first)`

I think this will get it for you, but not sure