如何解决将网址与网页正确链接的问题
models.py
from django.db import models
from django.core.validators import MaxValueValidator,MinValueValidator
#from django.contrib.postgres.fields import ArrayField
# Create your models here.
class locationData (models.Model):
locationID = models.AutoField (primary_key = True)
name = models.CharField (max_length = 64)
population = models.IntegerField (default = 0,validators = [MinValueValidator(0)])
apiEndpoint = models.URLField (max_length = 256)
resourceURL = models.URLField (max_length = 256)
class dateData (models.Model):
entryID = models.AutoField (primary_key = True)
name = models.CharField (max_length = 64)
date = models.DateField (auto_Now = False,auto_Now_add = False)
confirmedCase = models.IntegerField (default = 0,validators = [MinValueValidator(0)])
deathCase = models.IntegerField (default = 0,validators = [MinValueValidator(0)])
views.py
from django.shortcuts import render
from django.views.generic import TemplateView,ListView,DetailView
from database.models import locationData,dateData
# Create your views here.
class viewLocationData (DetailView):
template_name = "locationData.html"
model = locationData
def get_context_data (self,**kwargs):
location = self.kwargs['location']
context = super().get_context_data (**kwargs)
context ['location'] = locationData.objects.get (pk = location)
return context
app/urls.py
from django.urls import path
from database import views
urlpatterns = [
path ('location_data/<int:location>',views.viewLocationData.as_view(),name = 'location-data')
]
config/urls.py
from django.contrib import admin
from django.urls import include,path
urlpatterns = [
path('admin/',admin.site.urls),path ('database/',include ('database.urls'))
]
locationData.html
<h1>Location Data</h1>
<table>
<tr>
<td>Location Name</td>
<td>{{location.name}}</td>
</tr>
<tr>
<td>Current Estimated Population</td>
<td>{{location.population}}</td>
</tr>
<tr>
<td>API Endpoint</td>
<td>{{location.apiEndpoint}}</td>
</tr>
<tr>
<td>URL of Resource</td>
<td>{{location.resourceURL}}</td>
</tr>
</table>
我是一名初学者,正在从事一个项目,该项目旨在制作一个基于 Web 的应用程序,该应用程序显示特定位置的 Covid 病例数据。我现在正在尝试制作一个网页,显示有关某个位置的一些简单信息。
此网页的 URL 应该是 http://localhost:8000/database/location_data/1
。但是,当我测试该网页时,它无法显示并显示错误消息:
必须使用 URLconf 中的对象 pk 或 slug 调用通用详细信息视图 viewLocationData。
我不确定到底是哪个部分出了问题以及如何修复。
解决方法
您需要传递一个对象标识符 pk 或 slug。
这里的URLconf使用了命名组pk——这个名字是默认的 DetailView 用来查找主键值的名称 过滤查询集。
试试这个
urlpatterns = [
path ('location_data/<int:pk>',views.viewLocationData.as_view(),name = 'location-data')
or
path ('location_data/<slug:slug>',name = 'location-data')
]
更新:
class viewLocationData (DetailView):
template_name = "locationData.html"
model = locationData
def get_context_data (self,**kwargs):
location = self.kwargs['pk']
context = super().get_context_data (**kwargs)
context ['location'] = locationData.objects.get (pk = location)
return context
https://docs.djangoproject.com/en/3.1/ref/class-based-views/generic-display/#detailview
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。