python - 在基于类的 View 中限制经过身份验证的用户的 `UpdateView` 数据集

Question

我有一个 Django 项目，我在其中扩展了用户以使用 OneToOneField 拥有一个配置文件。我正在使用 CBV UpdateView，它允许用户更新他们的个人资料。他们为此访问的 URL 是 ../profile/user/update。我遇到的问题是，如果用户输入另一个用户名，他们可以编辑其他人的个人资料。我如何限制 UpdateView 以便经过身份验证的用户只能更新他们的个人资料。我试图做一些事情来确保 user.get_username == profile.user 但没有运气。

模型.py

from django.db import models
from django.contrib.auth.models import User
from django.db.models.signals import post_save
from django.core.urlresolvers import reverse

class Profile(models.Model):
    # This field is required.
    SYSTEM_CHOICES = (
        ('Xbox', 'Xbox'),
        ('PS4', 'PS4'),
    )
    system = models.CharField(max_length=5,
                                    choices=SYSTEM_CHOICES,
                                      default='Xbox')
    user = models.OneToOneField(User)
    slug = models.SlugField(max_length=50)
    gamertag = models.CharField("Gamertag", max_length=50, blank=True)
    f_name = models.CharField("First Name", max_length=50, blank=True)
    l_name = models.CharField("Last Name", max_length=50, blank=True)
    twitter = models.CharField("Twitter Handle", max_length=50, blank=True)
    video = models.CharField("YouTube URL", max_length=50, default='JhBAc6DYiys', help_text="Only the extension!", blank=True)
    mugshot = models.ImageField(upload_to='mugshot', blank=True)

    def __unicode__(self):
            return u'%s' % (self.user)

    def create_user_profile(sender, instance, created, **kwargs):
        if created:
            Profile.objects.create(user=instance, slug=instance)

    post_save.connect(create_user_profile, sender=User)

    def get_absolute_url(self):
        return reverse('profile-detail', kwargs={'slug': self.slug})

View .py

from django.shortcuts import render
from django.views.generic import DetailView
from django.views.generic.edit import UpdateView
from django.views.generic.list import ListView

from profiles.models import Profile


class ProfileDetail(DetailView):

    model = Profile

    def get_context_data(self, **kwargs):
        context = super(ProfileDetail, self).get_context_data(**kwargs)
        return context

class ProfileList(ListView):
    model = Profile
    queryset = Profile.objects.all()[:3]

    def get_context_data(self, **kwargs):
        context = super(ProfileList, self).get_context_data(**kwargs)
        return context

class ProfileUpdate(UpdateView):
    model = Profile
    fields = ['gamertag', 'system', 'f_name', 'l_name', 'twitter', 'video', 'mugshot']
    template_name_suffix = '_update'

    def get_context_data(self, **kwargs):
        context = super(ProfileUpdate, self).get_context_data(**kwargs)
        return context

管理员.py

from django.contrib import admin
from models import Profile

class ProfileAdmin(admin.ModelAdmin):
    prepopulated_fields = {'slug': ('user',), }

admin.site.register(Profile, ProfileAdmin)

Profiles 应用程序的 Urls.py

from django.conf.urls import patterns, url
from django.contrib.auth.decorators import login_required
from profiles.views import ProfileDetail, ProfileUpdate

urlpatterns = patterns('',
    url(r'^(?P<slug>[-_\w]+)/$', login_required(ProfileDetail.as_view()), name='profile-detail'),
    url(r'^(?P<slug>[-_\w]+)/update/$', login_required(ProfileUpdate.as_view()), name='profile-update'),
)

Profile_update.html

{% extends "base.html" %} {% load bootstrap %}

{% block content %}

{% if user.is_authenticated %}

  <h1>Update your profile</h1>

  <div class="col-sm-4 col-sm-offset-4">
    <div class="alert alert-info alert-dismissible" role="alert">
      <button type="button" class="close" data-dismiss="alert" aria-label="Close">
        <span aria-hidden="true">&times;</span>
      </button>
      <strong>Heads up!</strong> Other users can find you easier if you have a completed profile.
    </div>
    <form enctype="multipart/form-data" method="post" action="">{% csrf_token %}
      {{ form|bootstrap }}
      <input class="btn btn-default" type="submit" value="Update" />
    </form>
  </div>


{% else %}
<h1>You can't update someone elses profile.</h1>
{% endif %}

{% endblock %}

Answer 1

这样的事情怎么样:

from django.contrib.auth.views import redirect_to_login


class ProfileUpdate(UpdateView):
    [...]

    def user_passes_test(self, request):
        if request.user.is_authenticated():
            self.object = self.get_object()
            return self.object.user == request.user
        return False

    def dispatch(self, request, *args, **kwargs):
        if not self.user_passes_test(request):
            return redirect_to_login(request.get_full_path())
        return super(ProfileUpdate, self).dispatch(
            request, *args, **kwargs)

在此示例中，用户被重定向到默认的 LOGIN_URL。但是你可以很容易地改变它。将用户重定向到他们自己的个人资料。