lib/roachclip.rb in roachclip-0.1.0 vs lib/roachclip.rb in roachclip-0.1.1

@@ -29,11 +29,12 @@
 
       self.roaches << {:name => name, :options => options}
  
       options[:styles].each { |k,v| self.attachment "#{name}_#{k}"}
 
-      before_save    :process_roaches
+      before_save :process_roaches
+      before_save :destroy_nil_roaches
     end
   end
 
   module InstanceMethods
     def process_roaches
@@ -53,9 +54,22 @@
           thumbnail = Paperclip::Thumbnail.new src, styles[style_key]
           tmp_file_name = thumbnail.make
           stored_file_name = send("#{name}_name").gsub(/\.(\w*)\Z/) { "_#{style_key}.#{$1}" }
           send "#{name}_#{style_key}=", tmp_file_name
           send "#{name}_#{style_key}_name=", stored_file_name
+        end
+      end
+    end
+
+    def destroy_nil_roaches
+      roaches.each do |img|
+        name = img[:name]
+        styles = img[:options][:styles]
+
+        return unless @nil_attachments && @nil_attachments.include?(name)
+
+        styles.keys.each do |style_key|
+          send "#{name}_#{style_key}=", nil
         end
       end
     end
   end
 end