如何将 django-reversion 添加到使用 django 和 django-rest 框架开发的应用程序

Question

我有一个使用 Django 和 Django Rest 框架开发的应用程序。我想将 django-reversion 功能添加到我的应用程序中。

我已经尝试 http://django-reversion.readthedocs.org/en/latest/api.html#low-level-api 但我未能对我的应用程序进行具体更改。

下面是应用程序的模块，我想在其中包含 Django 还原以在对象被删除时恢复它们。如何为以下模块设置 django-reversion 配置

admin.py:-

from django.contrib import admin
from.models import Category

admin.site.register(Category)

models.py:-

  from django.db import models
  class Category(models.Model):
     name = models.CharField(max_length=64, unique=True)

     def __unicode__(self):
         return self.name

serializers.py:-

        from rest_framework import serializers
        from .models import Category

        class CategorySerializer(serializers.ModelSerializer):
              courses = serializers.HyperlinkedRelatedField(
                  many=True
                  read_only=True
                  view_name='course-detail'
               )
               class Meta:
                     model = Category
                     fields = ('pk', 'name', 'courses',)

urls.py :-

            from django.conf.urls import patterns, url
            from rest_framework.urlpatterns import format_suffix_patterns
            from .import views
            from django.conf.urls import include

            category_list = views.CategoryViewSet.as_view({
                'get': 'list',
                'post': 'create'
            })

            category_detail = views.CategoryViewSet.as_view({
                'get': 'retrieve',
                'put': 'update',
                'patch': 'partial_update',
                'delete': 'destroy',
           })

           urlpatterns = format_suffix_patterns([

                url(r'^categories/$',
                    category_list,
                    name='category-list'),
                url(r'^categories/(?P<pk>[0-9]+)/$',
                    category_detail,
                    name='category-detail'),
           ])

           urlpatterns += [
               url(r'^api-auth/', include('rest_framework.urls',
                                          namespace='rest_framework')),
           ]

views.py :-

from rest_framework import permissions
from rest_framework import viewsets
from .models import Category
from .serializers import CategorySerializer

class CategoryViewSet(viewsets.ModelViewSet):
 queryset = Category.objects.all()
 serializer_class = CategorySerializer
 permission_classes = (permissions.IsAuthenticatedorReadOnly,)

Answer 1

The simplest way to create revisions is to use reversion.middleware.RevisionMiddleware. This will automatically wrap every request in a revision, ensuring that all changes to your models will be added to their version history.

To enable the revision middleware, simply add it to your MIDDLEWARE_CLASSES setting as follows:

MIDDLEWARE_CLASSES = (
    'reversion.middleware.RevisionMiddleware',
    # Other middleware goes here...
)

任何更复杂的事情都需要通过您的代码添加 API 调用，以您决定的方式包装特定的 save 调用。

Answer 2

admin.py

from django.contrib import admin
from.models import Category
import reversion

class BaseReversionAdmin(reversion.VersionAdmin):
 pass

admin.site.register(Category, BaseReversionAdmin)

还添加了对 installed_apps 和中间件类的还原。

我终于看到了 "recover deleted objects button"。

Answer 3

我发现，由于 rest_framework.viewsets.ModelViewSet 继承自 django.views.generic.View，因此您还可以使用 reversion.views.RevisionMixin 创建修订版，而不必根据需要使用中间件。

从上面的问题来看，这看起来像下面这样：

from rest_framework import permissions
from rest_framework import viewsets
from .models import Category
from .serializers import CategorySerializer
from reversion.views import RevisionMixin

class CategoryViewSet(RevisionMixin, viewsets.ModelViewSet):
    queryset = Category.objects.all()
    serializer_class = CategorySerializer
    permission_classes = (permissions.IsAuthenticatedorReadOnly,)

您可以在此处详细了解如何使用 RevisionMixin：https://django-reversion.readthedocs.io/en/stable/views.html#reversion-views-revisionmixin

如何将 django-reversion 添加到使用 django 和 django-rest 框架开发的应用程序

How to add django-reversion to an app developed using django and django-rest framework

django

django-reversion

django-rest-framework