Post VIII: Delete an entry out of the Google App Engine Datastore!

Today I'm a little bit lazy, because of the christmas party last night. Here you get the code for the delete function. :-)
Easy as usual!

func deleteEntries(mealsID []string, r *http.Request) int{
 // Get context from 
    c := appengine.NewContext(r);

 
 for _,id := range mealsID{
  ID,_ := strconv.Atoi(id)
  // Build query to receive the values
  q:= datastore.NewQuery("Meal").Ancestor(mealStoreKey(c)).Filter("Id =", ID ).KeysOnly()
  // Receive all keys and delete them.
  keys, err := q.GetAll(c, nil)
  if err != nil{
   return 0
  }
  log.Printf("ID: %v ", id)
  log.Printf("Keys: %v ", keys)
  e := datastore.DeleteMulti(c, keys)
  if e != nil{
   log.Printf("%v ", e)
   return 33  
  }  
 }

 return len(mealsID)
}

I think, the next post will be longer!.

P.S. Checkout my repository on Bitbucket for the latest code!  https://bitbucket.org/loose11/mycanteen