Question

我正在通过Aliexpress API开发一个Web应用程序。

但我遇到了一些问题，例如我的头衔。

我写下我的观点如下：

def getToken(request):
appKey = 'test12345'
appSecret ='test3456'
redirectUrl = 'http://127.0.0.1:8000/'
#post to submit the request
postdata=urllib.urlencode({
    'grant_type':'authorization_code',
    'need_refresh_token':True,
    'client_id':appKey,
    'client_secret':appSecret,
    'redirect_uri':redirectUrl,
    'code':request.GET['code'],
    })
req = urllib2.Request(
    url = 'https://gw.api.alibaba.com/openapi/http/1/system.oauth2/getToken/%s' % appKey ,
    data = postdata)
#get access_token
value = eval(urllib2.urlopen(req).read())

#Checking the shop
check = aliexpressToken.objects.filter(user=request.user, aliid=value['aliId'])
if check:
    return HttpResponseRedirect("/shop/")
else:        
    result = aliexpressToken(user=request.user, aliid=value['aliId'], resource_owner=value['resource_owner'], refresh_token=value['refresh_token'], access_token=value['access_token'],shop_name='Aliexpress Trade')
    result.save()
    #get the id of shop which just is added.
    shop =  aliexpressToken.objects.get(aliid=value['aliId'], user=request.user.id).id
    return HttpResponseRedirect("/shop/%s/edit" % shop)

型号：

class aliexpressToken(models.Model):
    """docstring for aliexpressToken"""
    user = models.ForeignKey(User)
    aliid = models.CharField(max_length=30)
    resource_owner = models.CharField(max_length=30)
    refresh_token = models.CharField(max_length=50)
    access_token = models.CharField(max_length=50)
    shop_name = models.CharField(max_length=50)
    shop_color = models.CharField(max_length=30)
    shop_image = models.CharField(max_length=30)
    create_time = models.DateTimeField(auto_now_add=True)

当我尝试测试从Aliexpress获取访问权限时，它会提醒我int（）参数必须是字符串或数字，而不是'SimpleLazyObject'。我能做什么。非常感谢像这样的错误回溯，它包含更多信息给我。但我不能分析发生了什么。

Traceback:
File "D:\Python27\lib\site-packages\django\core\handlers\base.py" in get_response
  115.                         response = callback(request, *callback_args, **callback_kwargs)
File "D:\Project\blog\aliexpress\views.py" in getToken
  108.     check = aliexpressToken.objects.filter(user=request.user, aliid=value['aliId'])
File "D:\Python27\lib\site-packages\django\db\models\manager.py" in filter
  155.         return self.get_query_set().filter(*args, **kwargs)
File "D:\Python27\lib\site-packages\django\db\models\query.py" in filter
  655.         return self._filter_or_exclude(False, *args, **kwargs)
File "D:\Python27\lib\site-packages\django\db\models\query.py" in _filter_or_exclude
  673.             clone.query.add_q(Q(*args, **kwargs))
File "D:\Python27\lib\site-packages\django\db\models\sql\query.py" in add_q
  1266.                             can_reuse=used_aliases, force_having=force_having)
File "D:\Python27\lib\site-packages\django\db\models\sql\query.py" in add_filter
  1197.                 connector)
File "D:\Python27\lib\site-packages\django\db\models\sql\where.py" in add
  71.             value = obj.prepare(lookup_type, value)
File "D:\Python27\lib\site-packages\django\db\models\sql\where.py" in prepare
  339.             return self.field.get_prep_lookup(lookup_type, value)
File "D:\Python27\lib\site-packages\django\db\models\fields\related.py" in get_prep_lookup
  143.             return self._pk_trace(value, 'get_prep_lookup', lookup_type)
File "D:\Python27\lib\site-packages\django\db\models\fields\related.py" in _pk_trace
  216.         v = getattr(field, prep_func)(lookup_type, v, **kwargs)
File "D:\Python27\lib\site-packages\django\db\models\fields\__init__.py" in get_prep_lookup
  322.             return self.get_prep_value(value)
File "D:\Python27\lib\site-packages\django\db\models\fields\__init__.py" in get_prep_value
  555.         return int(value)

Exception Type: TypeError at /gettoken/
Exception Value: int() argument must be a string or a number, not 'SimpleLazyObject'

Answer 1

user = request.user._wrapped if hasattr（request.user，'_ wrapped'）else request.user

Answer 2

错误的主要原因在于：

#Checking the shop
check = aliexpressToken.objects.filter(user=request.user, aliid=value['aliId'])

Django创建了一个包装类SimpleLazyObject，一旦访问该对象的任何属性或成员，它将返回实际的对象。

所以“唤醒”懒惰的对象：

#Checking the shop
check = aliexpressToken.objects.filter(user_pk=request.user.pk, aliid=value['aliId'])

This question还有其他技巧来唤醒对象，包括这个单行：

user = request.user._wrapped if hasattr(request.user,'_wrapped') else request.user
check = aliexpressToken.objects.filter(user=user, aliid=value['aliId'])

除上述内容外，还需要模型中的所有字段;所以你需要传递所有这些，否则你的模型将无法保存。

您也不需要再次检索该对象，您可以直接访问该ID：

result = aliexpressToken()
result.user = request.user
result.resource_owner = value['resource_owner']
result.aliid = value['aliId']
result.refresh_token = value['refresh_token']
result.access_token = value['access_token']
result.shop_name = 'Aliexpress Trade'
result.shop_color = ''
result.shop_image = ''
result.save()
shop_id = result.pk

这也是非常危险的：

#get access_token
value = eval(urllib2.urlopen(req).read())

你应该从不使用eval，特别是从来没有从外部系统收到的东西。如果Feed中出现错误，您可能最终会执行您不想要的代码。

我假设库正在返回json，你可以简单地说：

import json

value = json.loads(urllib2.urlopen(req).read())

Answer 3

将user=request.user更改为user=request.user.id：

result = aliexpressToken(user=request.user.id, aliid=value['aliId'], resource_owner=value['resource_owner'], refresh_token=value['refresh_token'], access_token=value['access_token'],shop_name='Aliexpress Trade')

int（）参数必须是字符串或数字，而不是'SimpleLazyObject'

3 个答案: