我正在学习Django,并创建了一个应用程序“ myapp”,每个组件都有不同的组件:

模型看起来像这样:
Model.py:

from __future__ import unicode_literals
from django.db import models

class Country(models.Model):
    name = models.CharField(max_length=200)

    def __unicode__(self):
        return self.name


class CountryDetails(models.Model):
    country = models.ForeignKey(Country)
    T_attack = models.PositiveIntegerField(verbose_name="attack")
    year = models.CharField(max_length=254)
    Deaths = models.CharField(max_length=254)
    NEWS_ID = models.CharField(max_length=254, verbose_name="NEWS_ID")


    def __unicode__(self):
        return self.Deaths


视图如下所示:
view.py:

from django.shortcuts import render, get_object_or_404
from .models import Country, CountryDetails

def home(request):
    c_list = Country.objects.all()
    return render(request, 'myapp/home.html', {'c_list':c_list})

def details(request, pk):
    c_details =  get_object_or_404(CountryDetails, pk)
    return render(request, 'myapp/home.html', {'c_details':c_details})


Urls看起来像这样:
urls.py:

from django.conf.urls import url
from django.contrib import admin
from . import views

urlpatterns = [

url(r'^$', views.home, name='home'),
url(r'^myapp/(?P<pk>\d+)/$', views.details, name='details'),

]


用于渲染视图的html看起来像这样:
home.html:

 {% for c in c_list %}

 <h1><a href="{% url 'details' pk=c.pk %}">{{ c }}</a></h3></br>

 {% endfor %}


简而言之,我创建了一个应用程序,其中包含一些像这样的不同国家/地区的数据

原始数据:

name   T_attack   year  Deaths  News_ID

India    12       2006   12       NDTV
India    110      2009   1        DEAN
PAKISTAN 9        2002   10       XYZT
PAKISTAN 11       2021   11       XXTV
India    12       2023   120      NDNV
India    10       2012   12       DEAN
PAKISTAN 12       2022   12       DLRS
Canada   1        2001   1        DLTV
USA      2        2011   13       NTTV


“ myapp”的“ Home.html”呈现所有可用国家的列表,如下所示:

INDIA
PKISTAN
USA
CANADA


我希望当我单击时,假设在印度,它应该在与印度相关联的第二个“ html”页面上显示所有可用的详细信息,例如“ detailed.html”,如下所示:

name   T_attack   year  Deaths  News_ID
India    12       2006   12       NDTV
India    110      2009   1        DEAN
India    12       2023   120      NDNV
India    10       2012   12       DEAN


但是,当我执行我的代码时,它显示出如下错误:

ValueError at /myapp/1/
need more than 1 value to unpack
Request Method: GET
Request URL:    http://127.0.0.1:8000/myapp/1/
Django Version: 1.10
Exception Type: ValueError
Exception Value:
need more than 1 value to unpack
Exception Location: /home/jai/Desktop/trytable/local/lib/python2.7/site-packages/django/db/models/sql/query.py in build_filter, line 1130
Python Executable:  /home/jai/Desktop/trytable/bin/python
Python Version: 2.7.6
Python Path:
['/home/jai/Desktop/trytable/test_project',
 '/home/jai/Desktop/trytable/lib/python2.7',
 '/home/jai/Desktop/trytable/lib/python2.7/plat-i386-linux-gnu',
 '/home/jai/Desktop/trytable/lib/python2.7/lib-tk',
 '/home/jai/Desktop/trytable/lib/python2.7/lib-old',
 '/home/jai/Desktop/trytable/lib/python2.7/lib-dynload',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-i386-linux-gnu',
 '/usr/lib/python2.7/lib-tk',
 '/home/jai/Desktop/trytable/local/lib/python2.7/site-packages',
 '/home/jai/Desktop/trytable/lib/python2.7/site-packages']
Server time:    Sat, 15 Jul 2017 16:03:33 +0000


请帮我。谢谢

最佳答案

c_details =  get_object_or_404(CountryDetails, pk)


您应该将其替换为

c_details = CountryDetails.objects.filter(country__pk=pk)


在您的网址中,您使用的是国家/地区的pk,因此您需要过滤与国家/地区相关的所有行。 filter查询执行该操作。
为了在模板中显示详细信息,您可以执行以下操作。

{% for c in c_details %}

 <h1>{{ c.T_attack }}</h3></br>
 <!-- and so on for the other fields also. -->

{% endfor %}

10-05 20:52
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