Question

我对Django有点新意，需要一些帮助将我的python脚本（验证，构建gmail服务，查询gmail）翻译成django应用程序。我试图使用google django示例和他们在此处指定的课程https://developers.google.com/api-client-library/python/guide/django，但有点困惑。任何帮助将不胜感激！当我访问我的索引时，下面的代码将引导我完成身份验证流程，但在点击我的Google个人资料后，生成的页面出错："ValueError at /app/ 无法分配无：＆＃34; CredentialsModel.id＆＃34;不允许空值。＆＃34;

Traceback:
File "/Library/Python/2.7/site-packages/django/core/handlers/base.py" in get_response
  112.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/sachinshukla/Desktop/gmail/customer_support/views.py" in index
  70.       credentials = run(flow, storage, http=http)
File "/Library/Python/2.7/site-packages/oauth2client/util.py" in positional_wrapper
  132.       return wrapped(*args, **kwargs)
File "/Library/Python/2.7/site-packages/oauth2client/old_run.py" in run
  156.   storage.put(credential)
File "/Library/Python/2.7/site-packages/oauth2client/client.py" in put
  325.       self.locked_put(credentials)
File "/Library/Python/2.7/site-packages/oauth2client/django_orm.py" in locked_put
  126.     entity = self.model_class(**args)
File "/Library/Python/2.7/site-packages/django/db/models/base.py" in __init__
  405.                 setattr(self, field.name, rel_obj)
File "/Library/Python/2.7/site-packages/django/db/models/fields/related.py" in __set__
  335.                                 (instance._meta.object_name, self.field.name))

Exception Type: ValueError at /customer_support/
Exception Value: Cannot assign None: "CredentialsModel.id" does not allow null values.

观点代码：

CLIENT_SECRETS = os.path.join(os.path.dirname(__file__), '..', 'client_secret.json')
REDIRECT_URI = 'http://localhost:8080/'
SCOPES = [
'https://www.googleapis.com/auth/gmail.modify',
]


def index(request):
    storage = Storage(CredentialsModel, 'id', request.user.id, 'credential')
    credentials = storage.get()

    flow = flow_from_clientsecrets(CLIENT_SECRETS, scope=SCOPES)
    http = httplib2.Http()

    if credentials is None or credentials.invalid:
        credentials = run(flow, storage, http=http)

    # Authorize the httplib2.Http object with our credentials
    http = credentials.authorize(http)

    # Build the Gmail service from discovery
    gmail_service = build('gmail', 'v1', http=http)

    # then do something, query threads, messages, etc, 
    and return them to a template - not sure where exactly to put the methods for querying     threads, messages, etc.

型号：

from django.db import models

import pickle
import base64

from django.contrib import admin
from django.contrib.auth.models import User
from django.db import models

from oauth2client.django_orm import FlowField
from oauth2client.django_orm import CredentialsField


class CredentialsModel(models.Model):
  id = models.ForeignKey(User, primary_key=True)
  credential = CredentialsField()


class CredentialsAdmin(admin.ModelAdmin):
  pass


admin.site.register(CredentialsModel, CredentialsAdmin)

Answer 1

1）这部分完全成问题：

class CredentialsModel(models.Model):
  id = models.ForeignKey(User, primary_key=True)
  credential = CredentialsField()

如果你想与用户模型建立1-1关系，你可以使用

user = models.OneToOneField(User, primary_key=True)

2）你必须将这个部分分成一个新的admin.py文件，以避免将来出现问题。

class CredentialsAdmin(admin.ModelAdmin):
  pass


admin.site.register(CredentialsModel, CredentialsAdmin)

https://docs.djangoproject.com/en/1.6/topics/db/examples/one_to_one/

3）问题来自：

storage = Storage(CredentialsModel, 'id', request.user.id, 'credential')

user_id！= user。

正确的是：

storage = Storage(CredentialsModel, 'id', request.user, 'credential')

在django中使用gmail api

1 个答案: