Files get overwritten

[hacktorious]

Hello,

I'm attempting to use Carrierwave in rails 5 and am not having much luck using array file uploads on updates.

I have a form with several fields and a file select button. I can create and save the initial object without any trouble. The problem comes in when I try to do an update with something like @my_object.update_attributes(my_object_params).

If I try to add additional files when updating the form my initial files are overwritten with the new files. Even if I do something like this beforehand:

original_images = @my_object.find(params[:id]).images new_images = params[:my_object][:images] @my_object.images = original_images + new_images

Doing a "puts" here shows the newly added files, as well as the original files are in @my_object.

Calling @my_object.save only allows the files to be saved and won't update the form fields. So using this isn't really a viable option.
If I call @my_object.update_attributes(my_object_params), or @my_object.update(my_object_params). The form fields are updated, but the files in the array are completely rewritten with only the newly updated files. This seems bizarre to me since I updated the file array in @my_object with both the original and new files.

Apparently there aren't any callback methods to prevent this behavior as stated in the README file. I just get an error when trying to use a callback stating the callback method has not been defined.

ie:
`

• after_commit :remove_previously_stored_my_object, on: :update . (Singular Version obviously won't exist)
  skip_callback :commit, :after, :remove_previously_stored_my_object

• after_commit :remove_previously_stored_my_objects, on: :update (I would expect a plural version to be available)
  skip_callback :commit, :after, :remove_previously_stored_my_objects
  `

I've been working on this issue for a week and unfortunately I cannot find a solution. I will have to pull out carrierwave and do everything manually if I cannot resolve this soon. This would obviously not be ideal.

Please help! Thanks.

[hacktorious]

I'm pretty sure there is a bug in the CarrierWave code causing this issue since the config settings, which are supposed to prevent this behavior don't do anything.
config.remove_previously_stored_files_after_update = false

[mshibuya]

Closed by #2401.