Django 编辑按钮重定向以创建表单

Question

我的 Django 编辑按钮总是重定向到我的创建表单并创建新记录。我想要一个允许我编辑现有记录的编辑功能。不知道为什么它一直返回创建表单！

home.html:

{% extends 'base.html' %}

{% block content %}

{% for task in tasks %}
  <div class="row pt-3">
      <h1>{{ task.title }}</h1>
      <br>
      <p>{{ task.pub_date_pretty }}</p>
      <br>
      <p>{{ task.summary }}</p>
      <br>
      <br>
      <p>{{ task.user }}</p>
      <br>
      <br>
  </div>
  <div class="row pt-3">
    <a class="btn btn-primary" href="{% url 'edit' task.id %}">Edit</a>
  </div>
{% endfor %}

<br>
<br>

<a class="btn btn-primary" href="{% url 'create' %}">Create</a>

{% endblock %}

views.py:

    from django.shortcuts import render, redirect, get_object_or_404
    from django.contrib.auth.decorators import login_required
    from .models import Task
    from django.utils import timezone

    def home(request):
        tasks = Task.objects
        return render(request, 'home/home.html', {'tasks': Task.objects.all().order_by('-pub_date')})

    def taskdetail(request, task_id):
        task = get_object_or_404(Task, pk=task_id)
        return render(request, 'home/taskdetail.html', {'task':task})

    @login_required
    def create(request):
        if request.method == "POST":
            if request.POST['title'] and request.POST['description']:
                task = Task()
                task.title = request.POST['title']
                task.description = request.POST['description']
                task.pub_date = timezone.datetime.now()
                task.completed = False
                task.user = request.user
                task.save()
                return render(request, 'home/taskdetail.html', {'task':task})

            else:
                return render(request, 'home/create.html', {'error':'All fields are required'})
        else:
            return render(request, 'home/create.html')

    @login_required
    def edit(request, task_id):
        if request.method == "POST":
            if request.POST['title'] and request.POST['description']:
                task = Task(pk=task_id)
                task.title = request.POST['title']
                task.description = request.POST['description']
                task.pub_date = timezone.datetime.now()
                task.completed = False
                task.user = request.user
                task.save(pk=task_id)
                return render(request, 'home/taskdetail.html', {'task':task})

            else:
                return render(request, 'home/create.html', {'error':'All fields are required'})
        else:
            return render(request, 'home/create.html')

    @login_required(login_url="/accounts/signup")
    def delete(request, task_id):
        if request.method == "POST":
            task = get_object_or_404(Task, pk=task_id)
            task.delete()
            return render(request, 'home', {'task':task})

urls.py:

from django.urls import path, include
    from . import views

    urlpatterns = [
        path('create', views.create, name='create'),
        path('<int:task_id>', views.taskdetail, name='taskdetail'),
        path('edit/<int:task_id>', views.edit, name='edit'),
        path('delete/<int:task_id>', views.delete, name='delete'),
    ]

我多次重置服务器并清除浏览器缓存，但是

我不知道为什么它不让我进入我的编辑视图

Answer 1

复制 edit() 方法时，您忘记更改底部的模板名称。

return render(request, 'home/create.html')

Answer 2

edit 函数中的这一行：return render(request, 'home/create.html')

当您打开页面时，默认情况下是一个 GET 请求，因此它会转到这一行。您应该呈现编辑页面。并且，函数中的数据最好用表格来处理。

Django 编辑按钮重定向以创建表单

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