Почему мой запрос для структурированного свойства не работает с BadFilterError?

Question

Я не понимаю, как filter for structured properties

я получаю там ошибку:

BadFilterError: invalid filter: Cannot query for unindexed property author.email. 

Я пытаюсь создать объект в моем Тестовое.

Я использую код от GAE tutorial.

Вот модель:

class Author(ndb.Model): 
    """Sub model for representing an author.""" 
    identity = ndb.StringProperty(indexed=False) 
    email = ndb.StringProperty(indexed=True) 


class Greeting(ndb.Model): 
    """A main model for representing an individual Guestbook entry.""" 
    author = ndb.StructuredProperty(Author) 
    content = ndb.StringProperty(indexed=False) 
    date = ndb.DateTimeProperty(auto_now_add=True) 

Вот простой запрос:

Author.query(Author.email == "bryan@mail.com").get() 

Вот мой код тестирования в functional_tests.py:

import sys, os, subprocess, time, unittest, shlex 
sys.path.append("/usr/local/google_appengine")  
sys.path.append("/usr/local/google_appengine/lib/yaml/lib")  
sys.path.append("/usr/local/google_appengine/lib/webapp2-2.5.2")  
sys.path.append("/usr/local/google_appengine/lib/django-1.5")  
sys.path.append("/usr/local/google_appengine/lib/cherrypy")  
sys.path.append("/usr/local/google_appengine/lib/concurrent")  
sys.path.append("/usr/local/google_appengine/lib/docker")  
sys.path.append("/usr/local/google_appengine/lib/requests")  
sys.path.append("/usr/local/google_appengine/lib/websocket")  
sys.path.append("/usr/local/google_appengine/lib/fancy_urllib")  
sys.path.append("/usr/local/google_appengine/lib/antlr3")  

from selenium import webdriver  
from google.appengine.api import memcache, apiproxy_stub, apiproxy_stub_map 
from google.appengine.ext import db  
from google.appengine.ext import testbed  
from google.appengine.datastore import datastore_stub_util  
from google.appengine.tools.devappserver2 import devappserver2  


class NewVisitorTest(unittest.TestCase):  

    def setUp(self):  
     # Start the dev server 
     cmd = "/usr/local/bin/dev_appserver.py /Users/Bryan/work/GoogleAppEngine/guestbook/app.yaml --port 8080 --storage_path /tmp/datastore --clear_datastore --skip_sdk_update_check" 
     self.dev_appserver = subprocess.Popen(shlex.split(cmd), 
               stdout=subprocess.PIPE) 
     time.sleep(2) # Important, let dev_appserver start up 

     self.testbed = testbed.Testbed() 
     self.testbed.setup_env(app_id='dermal')  
     self.testbed.activate()  

     self.testbed.init_user_stub()  
     # Create a consistency policy that will simulate the High Replication consistency model. 
     # with a probability of 1, the datastore should be available. 
     self.policy = datastore_stub_util.PseudoRandomHRConsistencyPolicy(probability=1) 
     # Initialize the datastore stub with this policy. 
     self.testbed.init_datastore_v3_stub(datastore_file="/tmp/datastore/datastore.db", use_sqlite=True, consistency_policy=self.policy)  
     self.testbed.init_memcache_stub()  
     self.datastore_stub = apiproxy_stub_map.apiproxy.GetStub('datastore_v3')    
     # setup the dev_appserver  
     APP_CONFIGS = ['app.yaml']  

     # setup client to make sure 
     from guestbook import Author, Greeting 
     if not (Author.query(Author.email == "bryan@mail.com").get()): 
      logging.info("create Admin") 
      client = Author( 
      email = "bryan@mail.com", 
      ).put() 
      Assert(Author.query(Author.email == "bryan@mail.com").get()) 
     self.browser = webdriver.Firefox()  
     self.browser.implicitly_wait(3)  

    def tearDown(self):  
     self.browser.quit()  
     self.testbed.deactivate()  
     self.dev_appserver.terminate() 

    def test_submit_anon_greeting(self): 
      self.browser.get('http://localhost:8080') 
      self.browser.find_element_by_name('content').send_keys('Anonymous test post') 
      self.browser.find_element_by_name('submit').submit() 
      Assert.assertEquals(driver.getPageSource().contains('Anonymous test post')) 

Answer 1

Вы запрашивая модель автора. Но в вашей структуре авторы существуют только в рамках Приветствия. Поэтому вы должны создавать приветствие и запрашивать эту модель.

Greeting(
    author=Author(email="bryan@mail.com"), 
    content="Hello there!") 
).put() 

Greeting.query(Greeting.author.email=="bryan@mail.com").get()