// PutList saves the list for the given tag.
func PutList(w http.ResponseWriter, r *http.Request) {
// Get the context.
c := appengine.NewContext(r)
// Get the Key.
vars := mux.Vars(r)
key := vars["key"]
datastore.RunInTransaction(c, func(c appengine.Context) error {
// Get the original list.
ol, ok := GetListHelper(c, w, r, key)
if !ok {
return fmt.Errorf("getting original list")
}
// Get the new list from the body.
var nl List
if !gorca.UnmarshalFromBodyOrFail(c, w, r, &nl) {
return fmt.Errorf("unmarshalling")
}
// Merge the new list into the old list and remove deleted keys.
delskeys := ol.Merge(&nl)
if !gorca.DeleteStringKeys(c, w, r, delskeys) {
return fmt.Errorf("deleting keys")
}
// Update the values.
ol.LastModified = time.Now()
ol.Name = nl.Name
if !PutListHelper(c, w, r, ol) {
return fmt.Errorf("putting list")
}
// Remove it from memcache
memcache.Set(c, &memcache.Item{
Key: key,
Value: []byte(fmt.Sprintf("%d", ol.LastModified.Unix())),
})
// Return the updated list back.
gorca.WriteJSON(c, w, r, ol)
return nil
}, nil)
}
// DeleteRecipe deletes the recipe for the given tag. The currently
// logged in user must own the recipe. Otherwise, an unauthorized error
// is returned.
func DeleteRecipe(w http.ResponseWriter, r *http.Request) {
// Get the context.
c := appengine.NewContext(r)
// Get the Key.
vars := mux.Vars(r)
key := vars["key"]
datastore.RunInTransaction(c, func(c appengine.Context) error {
if !gorca.DeleteStringKeys(c, w, r, []string{key}) {
return fmt.Errorf("deleting recipe")
}
gorca.WriteSuccessMessage(c, w, r)
return nil
}, nil)
}