How to link images with topic

Development
5

Here is the code that updates the topic image_upload_id, it’s in CookedPostProcessor::update_post_image

So what you could do is monkey patch that function and then do something like

def update_post_image
  super # call original
  if @post.custom_fields[:your_field_name_upload_id]
    upload_id = @post.custom_fields[:your_field_name_upload_id]
    @post.update_column(:image_upload_id, upload_id) # post
    if @post.is_first_post? # topic
        @post.topic.update_column(:image_upload_id, upload_id)
    end
  end
end