Empty file field deletes previously attached files when updating a record that has active_storage

[Shpigford]

I have a vanilla Art model with has_many_attached in it...

class Art < ApplicationRecord
  has_many_attached :images
  belongs_to :art_category
end

This appropriately adds an "Images" field in rails_admin, and when creating a new record, it works perfectly.

However, if I return to that record and update any other field (but don't touch the images), it deletes the associated image.

Parameters: {
  "authenticity_token"=>"[FILTERED]", 
  "art"=>{
    "name"=>"mountains", 
    "description"=>"this is a description i'm writing", 
    "tools"=>"midjourney, photoshop, wombo", 
    "nft"=>"1", 
    "external_link"=>"https://opensea.io/...", 
    "art_category_id"=>"1", 
    "images"=>[""]
  }, 
  "return_to"=>"http://localhost:3000/admin/art_category/new", 
  "_add_edit"=>"true", 
  "model_name"=>"art", 
  "id"=>"6"
}

As you can see, the images field is submitting a blank array.

Is this a setting I'm missing? Or is this a bug?

Additional context

• rails version: 7.0.3
• rails_admin version: 3.0.0

[darrenterhune]

I'm on latest stable rails 6.0 and rails_admin 3.0.0 and don't have this issue. We do however follow this https://github.com/railsadminteam/rails_admin/wiki/ActiveStorage#deleting-an-attachment but that shouldn't affect what you're seeing afaict

[mshibuya]

Thanks for reporting. This is because of those changes in ActiveStorage.
rails/rails@4f191b9
rails/rails@400b210
Pushed the fix into the master branch, so please try it when you get a chance.

[aliceclv]

I'm still experiencing that issue.
Pictures and videos attached are sent as an empty array.
Here are the parameters sent on update, the issue is only happening on production though. I'm using rails 7.1.1 and rails_admin: 3.1.2

 {"authenticity_token"=>"[FILTERED]", "seller_item"=>{"seller_id"=>"xxx", "featured"=>"1", "title"=>"", "description"=>"", "pictures"=>[""], "videos"=>[""]}, "return_to"=>"xxxxx", "_save"=>"", "model_name"=>"seller_item", "id"=>"xxxx"}