added an option to force the deletion of a attachment

lib/couchrest/core/database.rb

@@ -113,10 +113,21 @@ module CouchRest
     end
     
     # DELETE an attachment directly from CouchDB
-    def delete_attachment doc, name
+    def delete_attachment(doc, name, force=false)
       uri = url_for_attachment(doc, name)
       # this needs a rev
-      JSON.parse(HttpAbstraction.delete(uri))
+      begin
+        JSON.parse(HttpAbstraction.delete(uri))
+      rescue Exception => error
+        if force
+          # get over a 409
+          doc = get(doc['_id'])
+          uri = url_for_attachment(doc, name)
+          JSON.parse(HttpAbstraction.delete(uri))
+        else
+          error
+        end
+      end
     end
     
     # Save a document to CouchDB. This will use the <tt>_id</tt> field from

lib/couchrest/mixins/attachments.rb

@@ -19,9 +19,9 @@ module CouchRest
       end
 
       # deletes an attachment directly from couchdb
-      def delete_attachment(name)
+      def delete_attachment(name, force=false)
         raise ArgumentError, "doc.database required to delete_attachment" unless database
-        result = database.delete_attachment(self, name)
+        result = database.delete_attachment(self, name, force)
         self['_rev'] = result['rev']
         result['ok']
       end