Question

我正在开发个人博客的后端，并创建了一个视图，用于删除帖子的单个标签。

views.py

var array1 = ["j1", "ff2", "3hj", "4sss", "5gh", "6ss", "7aqw"],
    array2 = ["klp3", "jks32", "44sss", "3hj", "5gh", "6ss", "7aqw"];

    array1.forEach( (value,index1) => {
      if(array2.includes(value)){
         var index2 = array2.indexOf(value);
         console.log(value + " found index1:" + index1 + ", index2:" + index2);
      }
});

models.py

from django.shortcuts import get_object_or_404, redirect, render
from django.utils.text import slugify

from .forms import BlogTagForm
from .models import BlogTag

def deleteBlogTag(request, slug_tag):
    if request.method == 'POST':
        tag = BlogTag.objects.get(slug_tag=slug_tag)
        tag.delete()
    return redirect('tag_list')

urls.py

from django.db import models
from django.urls import reverse

class BlogTag(models.Model):
    tag_name = models.CharField(
        'Tag',
        max_length=50,
        help_text="Every key concept must be not longer then 50 characters",
        unique=True,
        )
    slug_tag = models.SlugField(
        'Slug',
        unique=True,
        help_text="Slug is a field in autocomplete mode, but if you want you can modify its contents",
        )

    def __str__(self):
        return self.tag_name

    def get_absolute_url(self):
        return reverse("single_blogtag", kwargs={"slug_tag": self.slug_tag})

    class Meta:
        ordering = ['tag_name']

tag_list.html

path("tags/", views.listTagAdmin, name='tag_list_admin'),
path("create-tag/", views.createBlogTag, name='create_tag'),
path("update-tag/<str:slug_tag>/", views.updateBlogTag, name='update_tag'),
path("delete-tag/<str:slug_tag>/", views.deleteBlogTag, name='delete_tag'),

问题在于无法删除列表中的每个对象，而只能删除第一个对象。即使我尝试删除最后一个对象，我也会删除第一个对象而不是最后一个对象。

我在哪里错了？

Answer 1

您所有的模式形式都被命名为相同，因此它将选择一个。如果搜索特定的id，它将选择一个。为了解决这个问题，您应该给modal赋予不同的id：

    <tbody>
      {% for tag in tag_list %}
      <tr>
        <td colspan="1">{{ tag.tag_name }}</td>
        <td colspan="1"><a href="{{ tag.get_absolute_url }}">{{ tag.tag_blogpost.count }}</a></td>
        <td colspan="1">

          <div class="row justify-content-md-center">
            <a class="btn btn-success btn-sm mx-1" href="{% url 'update_tag' slug_tag=tag.slug_tag %}">Update</a>

            <button data-target="#deleteModal{{ tag.pk }}" class="btn btn-danger btn-sm mx-1" type="button" data-toggle="modal">Delete</button>

            <div class="modal fade" id="deleteModal{{ tag.pk }}" tabindex="-1" role="dialog" aria-labelledby="deleteModalLabel" aria-hidden="true">
              <div class="modal-dialog" role="document">
                <div class="modal-content">
                  <div class="modal-header">
                    <h2 class="modal-title text-center" id="deleteModalLabel">Delete Request</h2>
                  </div>
                  <div class="modal-body">
                    <h3>Are you sure to delete this tag?</h3>
                    <h1 class="py-4"><em><strong>{{ tag.tag_name }}</strong></em></h1>
                  </div>
                  <div class="modal-footer">
                    <button type="button" class="btn btn-primary btn-sm" data-dismiss="modal">No, don't do this</button>
                    <form action="{% url 'delete_tag' slug_tag=tag.slug_tag %}" method="POST">
                      {% csrf_token %}
                      <button class="btn btn-danger btn-sm" type="submit" name="button">Yes, delete it</button>
                    </form>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </td>
      </tr>

因此，这里我们在id的{{1}}上添加了后缀，并在<div class="modal fade" id="deleteModal{{ tag.pk }}" ...>中使用了相同的id。

删除视图不会删除对应的对象

1 个答案: