Presence validation fails to account for marked_for_destruction

[SughoshRao]

Hey, thanks for your work on the gem!

Consider the following example code:

# In model.rb
has_one_attached :image
accepts_nested_attributes_for :image_attachment, allow_destroy: true

validates :image, presence: true

If the image is now set as marked_for_destruction, via the _destroy attribute, the image_attachment is deleted (along with the blob) on saving the model.. This is unexpected, I'm looking for the presence validation to be triggered before any operation is performed with the attachment.

This was a bug in ActiveRecord that has been fixed in Rails 4: https://github.com/rails/rails/pull/6827

[igorkasyanchuk]

Hello @SughoshRao if possible, please create a PR with a fix?

[Mth0158]

Hi @SughoshRao, It's been a long time since you raised this issue. As I understand it while reading your comment + the linked Rails PR, we should not validate with attached: true (and therefore not delete attachments) if all images are marked as for destruction. Am I right?