通过Django中的id获取对象 [英] Getting Objects by id in Django

问题描述

我正在尝试通过ID在我的django应用程序中获取数据。问题是我不知道用户点击的那种id。我尝试在我的意见中添加以下代码，但是我收到此错误：

  ValueError at / findme / 
 
 int（）的无效字面值为10：'id'
 
请求方法：GET 
请求URL：http://127.0.0.1:8000/findme/ 
 Django版本：1.4 
异常类型：ValueError 
异常值：基数为10的int（）的无效字面值：'id'
 
异常位置：C：\Python27 \lib\site-package\django\db\models\fields\___init __。py in get_prep_value，line 537 
 Python可执行文件：C：\Python27\python.exe 
 Python版本：2.7.3 
  

视图

  from meebapp.models import Meekme 
 
 def cribdetail（request）：
 post = Meekme.objects.get（id ='id'）
 return render_to_response（'postdetail.html'，{'post'：post，'Meekme'：Meekme}，context_instance = RequestContext（request））
  

我缺少什么？

解决方案

问题是'id'是一个字符串，您需要在此处传递一个整数：

  post = Meekme.objects.get（id ='id'）
  

应该很可能是这样的：

  def cribdetail（request，meekme_id）：
 post = Meekme .objects.get（id = meekme_id）
 return render_to_response（'postdetail.html'，{'post'：post，'Meekme'：Meekme}，context_instance = RequestContext（request））
  

其中 meekme_id 是一个整数，是URL的一部分。您的网址配置应包含：

  url（r'^ example /（？P< meekme_id> \d +）/ $' ，'example.views.cribdetail'），
  

当您访问示例/ 3 / ，这意味着Django将调用视图 cribdetail ，值3分配给 meekme_id 。有关详细信息，请参阅Django URL文档。

I'm trying to get data by id in my django app. The problem is that I don't know the kind of id the user will click on. I tried adding the below code in my views but I'm getting this error:

 ValueError at /findme/

 invalid literal for int() with base 10: 'id'

 Request Method:    GET
 Request URL:   http://127.0.0.1:8000/findme/
 Django Version:    1.4
 Exception Type:    ValueError
 Exception Value:   invalid literal for int() with base 10: 'id'

 Exception Location:    C:\Python27\lib\site-packages\django\db\models\fields\__init__.py in get_prep_value, line 537
 Python Executable:     C:\Python27\python.exe
  Python Version:   2.7.3

Views

from meebapp.models import Meekme

def cribdetail(request):
    post=Meekme.objects.get(id='id')
    return render_to_response('postdetail.html',{'post':post, 'Meekme':Meekme},context_instance=RequestContext(request))

What I'm I missing?

解决方案

The problem is that 'id' is a string and you need to pass an integer here:

post=Meekme.objects.get(id='id')

It should most likely look like this:

def cribdetail(request, meekme_id):
    post=Meekme.objects.get(id=meekme_id)
    return render_to_response('postdetail.html',{'post':post, 'Meekme':Meekme},context_instance=RequestContext(request))

where meekme_id is an integer that is part of the URL. Your URL configuration should contain:

url(r'^example/(?P<meekme_id>\d+)/$', 'example.views.cribdetail'),

When you visit example/3/, that means Django will call the view cribdetail with the value 3 assigned to meekme_id. See the Django URL documentation for more details.

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