Question

Django：无法访问模型类

上的object属性

我正忙着构建一个Django App，它从数据库中返回一组需求。然而，我在View.py中得到了ab ObjectDoesNotExist异常。我正在使用Visual Studio 2015.我将非常感谢您解决此错误的所有帮助。

以下是Models.py中的代码：

from django.db import models

class Requirement_Matrix(models.Model):    
    RequirementName = models.CharField(max_length=128)

在Views.py中，Visual Studio 2015中的intellisense表示对象（第12行）是未知类型。当你运行程序时，它会引发一个对象不存在异常。

01 from django.core.exceptions import ObjectDoesNotExist
02 from ScopeManagement.models import Requirement_Matrix
03
04
05 def index(request):
06    # Query the database for a list of requirements for a specific project.
07    # Place the list in our Requirement_dict dictionary which will be passed to the 
08  #template engine.
09    
10    try:
11
12        Requirement_list = Requirement_Matrix.objects.all() ### <- Visual Studio 2015 
13  # is saying that objects is unknown type and then it raises an object does 
14  # not exist exception
15
16        Requirement_dict = {'requirements': Requirement_list}
17
18    except ObjectDoesNotExist:
19        print ('Does Not Exist!')
20    
21    # Render the response and send it back
22    return render(request, 'ScopeManagement/index.html', Requirement_dict)

但是，当您通过python manage.py shell查询模型时，它确实返回一个值：

python manage.py shell
>>> from ScopeManagement.models import Requirement_Matrix
>>> Requirement_Matrix.objects.all()
[<Requirement_Matrix: Requirement 1>]

可能是什么原因？

Django：无法访问View.py中模型类的object属性

0 个答案: