django - 属性错误方法对象没有属性

Question

我是 Django 框架的新手，正在参加 LinkedIn Learning 的在线类(class)。我正在使用较新版本的 python/django，因此遇到了一些语法问题。

我的python版本是3.5.4rc1。我的 Django 版本是 1.11.4

我在 models.py 中为库存创建了一个模型:

class Item(models.Model):
    titel = models.CharField(max_length=200)
    omschrijving = models.TextField()
    aantal = models.IntegerField()

这是我的views.py 文件中的代码:

from django.shortcuts import render
from django.http import Http404

from inventory.models import Item

def index(request):
    items = Item.objects.exclude(aantal=0)
    return render (request, 'inventory/index.html', {
        'items': items,
    })
    return HttpResponse('<p>In index view</p>')

def item_detail(request, id):
    try:
        item = Item.objects.get.id=(id) #THIS ONE CAUSES PROBLEM???
    except Item.DoesNotExist:
        raise Http404('Dit item bestaat niet')
    return render(request, 'inventory/item_detail.html', {
        'item': item,
    })

在浏览器中，localhost:8000 按预期显示主页。localhost:8000/item/1/给出错误:

AttributeError at /item/1/
'method' object has no attribute 'id'
Request Method: GET
Request URL:    http://localhost:8000/item/1/
Django Version: 1.11.4
Exception Type: AttributeError
Exception Value:    
'method' object has no attribute 'id'
Exception Location: 
C:\Users\info_000\Desktop\django\mysite\inventory\views.py in item_detail, line 15

请帮忙!

Answer 1

item = Item.objects.get(id=id)
                      ^^^
# id = field_name of primary key in your model as string ('id' on default)
# id  = your local variable 'id' from function signature