Django AJAX請求：創建和刪除課程。 刪除課程無效

Question

在我的應用程序中，我想使用ajax創建和刪除Course實例。 我已經完成創建功能，如下所示：

urls.py

app_name = 'courses'

urlpatterns = [
    path('index/', views.index, name='index'),
    path('create/', views.create, name='create'),
    path('delete/<int:course_id>/', views.delete, name='delete'),

]

views.py

from django.shortcuts import render, redirect
from courses.models import Course
from django.http import JsonResponse
from django.forms.models import model_to_dict
# Create your views here.

def index(request):
    context = {
        'courses':Course.objects.all(),
    }
    return render(request, 'courses/index.html', context)

def create(request):
    if request.method == 'POST':
        course = Course.objects.create(name=request.POST['name'], description=request.POST['description'])
        # return redirect('courses:index')
        # course is a queryset, we need to change it to a dictionary
        return JsonResponse(model_to_dict(course))
    else:
        return render(request, 'courses/index.html')

def delete(request, course_id):
    course = Course.objects.get(pk=course_id)
    if request.method == 'POST':
        course.delete()
        courses = Course.objects.all()

        return JsonResponse((courses))

        # return JsonResponse(model_to_dict(course))
    else:
        return render(request, 'courses/index.html', {'courses':Course.objects.all()})

這是它的jQuery：

$(document).ready(function(){

  $('.course_form').submit(function(event){
    console.log(event);
    event.preventDefault();
    $.ajax({
                url: '/courses/create/',

      method: 'post',
      data: $(this).serialize(),
      success: function(response){
        console.log(response);
        $('.courses').append(`<p>Name: ${response.name},
                              Description: ${response.description}</p>
                              <form class="delete_form" action="/courses/delete/${response.id}/" method="post">

                                <input type="submit" value="delete">
                              </form>
                              `)

        $('.course_form')[0].reset();

      }
    });

  })
  $('delete_form').submit(function(event){
    console.log(event);
    event.preventDefault();
    $.ajax({
      url: '/courses/delete/',
      method: 'post',
      success: function(response){
        console.log(response);
      }
    })
  })
})

創建課程后，我將在課程下方添加一個刪除按鈕。 問題是正在創建的表單沒有csrf令牌，但鑒於csrf令牌是python，我不知道如何使用jquery添加表單。 關於如何解決此問題的任何想法？

Answer 1

基於Django文檔，您有2個關於CSRF保護的選項 ：

1. 通過以下方式在Javascript中設置CSRF令牌：

    {% csrf_token %} <script type="text/javascript"> // using jQuery var csrftoken = jQuery("[name=csrfmiddlewaretoken]").val(); </script> 

2. 從csrftoken cookie中獲取它，並為所有AJAX請求設置它：

    function csrfSafeMethod(method) { // these HTTP methods do not require CSRF protection return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method)); } $.ajaxSetup({ beforeSend: function(xhr, settings) { if (!csrfSafeMethod(settings.type) && !this.crossDomain) { xhr.setRequestHeader("X-CSRFToken", csrftoken); } } });