我正在構建一個Django應用程序,通過LinkedIn API下載一些數據並將其存儲到MongoDB。我正在使用python-linkedin庫。一個函數獲取組帖子並將這些帖子作爲字典對象返回。Python,MongoDB,Mongoengine - TypeError:字符串索引必須是整數,而不是str
測試時我正在以下類型錯誤:
======================================================================
ERROR: test_get_or_create_post (providers.linkedin.tests.LinkedInTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/Users/josephfusaro/explorro/explorro/app/providers/linkedin/tests.py", line 36, in test_get_or_create_post
api.get_or_create_post(a1)
File "/Users/josephfusaro/explorro/explorro/app/providers/linkedin/api.py", line 134, in get_or_create_post
existing_post = Post.objects.get(post_id=post['id'])
TypeError: string indices must be integers, not str
這裏是返回,表示LinkedIn組職位和創建該貼的用戶一個字典對象的例子。
{u'creator':
{u'firstName': u'Joe',
u'headline': u'General Manager',
u'id': u'Wr4g5xEN4I',
u'lastName': u'P.',
u'pictureUrl': u'http://m.c.lnkd.licdn.com/mpr/mprx/0_x...xJkwu'},
u'id': u'g-60415-S-5913079393848621697',
u'title': u'How do you use LinkedIn groups for business?',
u'type': {u'code': u'standard'}
}
我試圖在MongoDB中存儲這些對象。這裏是(大部分)的documents.py文件:
# documents.py
from mongoengine import (
Document,
ReferenceField,
StringField,
IntField,
DateTimeField,
URLField,
DictField,
ListField, DoesNotExist, NotUniqueError)
from abc import ABCMeta, abstractmethod
class LinkedInUser(Document):
linkedin_user_id = StringField(required=True)
screen_name = StringField()
first_name = StringField()
last_name = StringField()
description = StringField()
url = URLField()
profile_image_url = URLField()
class Post(Document):
linkedin_user = ReferenceField(LinkedInUser,required=True)
post_id = StringField(required=True)
title = StringField()
這裏是需要一個後(預期爲一個字典),並將其保存的MongoDB
# api.py
def get_or_create_post(post):
try:
existing_post = Post.objects.get(post_id=post['id'])
return existing_post
except DoesNotExist:
try:
new_post = Post()
new_post.linkedin_user = get_or_create_linkedin_user(
post['creator']
)
new_post.post_id = post['id']
new_post.title = post['title']
new_post.save()
return new_post
except NotUniqueError:
return get_or_create_post(post)
注意的功能,我正在錯誤,同時運行的Django測試
# tests.py
from django.test import TestCase
from .models import OauthToken
from accounts.models import EmailUser
from . import api
class LinkedInTestCase(TestCase):
'''To run these tests: python app/manage.py test linkedin'''
def setUp(self):
cust_user = EmailUser.objects.create()
oauth = OauthToken.objects.create(user=cust_user)
oauth.access_token = "AQUaXm...klsdfQ"
oauth.save()
def test_get_or_create_post(self):
oauth = OauthToken.objects.get(user=0)
auth = api.get_linkedin_api(access_token=oauth.access_token)
posts = api.get_linkedin_group_digest(auth) # create generator object and set to 'posts'
a = next(posts) # get item from generator object above
a1 = ["values"][0] # Get first post from dict
api.get_or_create_post(a1)
這是Django的OR的限制M + MongoDB,還是我做了其他的錯誤?
哪裏是'api.get_or_create_post代碼(A1) '?請檢查'a1'的值,它必須是'dict'。 – Nilesh 2014-09-04 03:38:23
我剛剛添加了tests.py以進一步說明我如何獲取錯誤。 – 2014-09-04 03:46:52
用回答:) – Nilesh 2014-09-04 03:51:18