You can supply a short message to the uploader explaining why you rejected this upload.

<%= simple_form_for(PostDisapproval.new, url: moderator_post_disapproval_path, remote: true, id: "detailed-rejection-form") do |f| %> <%= f.hidden_field :post_id, value: "x" %> <%= f.input :reason, collection: [["Breaks Rules", "breaks_rules"], ["Poor Quality", "poor_quality"], ["No interest", "disinterest"]] %> <%= f.input :message, as: :string %> <% end %>