filename on update

[tigus]

I have an issue after upgrading to carrierwave 3 (from 2.2)
I wish to keep the previous name of my image on update, but it doesn't seem possible anymore.

I have a simple form to update an image of my img model:
<%= file_field_tag "asset-#{id}-img", class: "form-control field_img" %>

And then, in my controller, I make my update:

@asset.update(asset_params)

I use this function to setup the filename:

def filename
		if original_filename.present?
			if model.new_record?
				filename = File.basename(original_filename, '.*')
				"#{filename}#{filename.match(/_[0-9]{3}$/) ? '' : random_id}.#{file.extension}"
			else
				model['img']
			end
		end
	end

but, while carrierwave 2.2 returned the original name (saved in DB), model['img'] now returns a new name...

So I tried this code:

	def filename
		if original_filename.present?
			if model.new_record?
				filename = File.basename(original_filename, '.*')
				"#{filename}#{filename.match(/_[0-9]{3}$/) ? '' : random_id}.#{file.extension}"
			else
				model['img'] = model.img_was
			end
		end
	end

but it still doesn't work as, if my name was original_123.jpg, I get original_123(2).jpg...

Thanks in advance for your help!