Django Rest_Framework：在模板中調用刪除方法

Question

我試圖將示例應用程序從Rest Framework教程轉換爲模板應用程序。問題是我無法在單個記錄的詳細視圖中創建刪除按鈕。 我views.py如下：

class SnippetViewSet(viewsets.ModelViewSet): 

queryset = Snippet.objects.all() 
serializer_class = SnippetSerializer 
permission_classes = (permissions.IsAuthenticatedOrReadOnly, 
         IsOwnerOrReadOnly,) 
renderer_classes = [renderers.TemplateHTMLRenderer] 
template_name = 'list.html' 


def list(self, request, **kwargs): 
    print(request.method, request.user) 
    queryset = Snippet.objects.all() 
    serializer = SnippetSerializer(context={'request': request}) 
    return Response({'queryset': queryset, 'serializer': serializer}, template_name='list.html') 


def retrieve(self, request, *args, **kwargs): 
    print(request.method, 'retrieve') 
    queryset = self.get_object() 
    serializer_class = SnippetSerializer(queryset, context={'request': request}) 
    return Response({'queryset': queryset, 'serializer': serializer_class}, template_name='retrieve.html') 


def create(self, request, *args, **kwargs): 
    print(request.method, 'create') 
    serializer = SnippetSerializer(instance=None, context={'request': request}, data=request.data) 
    if serializer.is_valid(): 
     serializer.save(owner=self.request.user) 
     return redirect('snippet-list') 


def post(self, request, *args, **kwargs): 
    print(request.method, 'post') 
    queryset = self.get_object() 
    serializer = SnippetSerializer(queryset, data=request.data, context={'request': request}) 
    if not serializer.is_valid(): 
     return Response({'serializer': serializer, 'queryset': queryset}) 
    serializer.save() 
    return redirect('snippet-list') 


def destroy(self, request, *args, **kwargs): 
    instance = self.get_object() 
    self.perform_destroy(instance) 
    return Response(status=status.HTTP_204_NO_CONTENT) 

def perform_destroy(self, instance): 
    instance.delete() 

urls.py保持不變：

snippet_list = SnippetViewSet.as_view({ 
'get': 'list', 
'post': 'create', 
}) 

snippet_detail = SnippetViewSet.as_view({ 
    'get': 'retrieve', 
    'put': 'update', 
    'patch': 'partial_update', 
    'delete': 'destroy', 
}) 
user_list = UserViewSet.as_view({ 'get': 'list'}) 
user_detail = UserViewSet.as_view({ 
    'get': 'retrieve', 
    'put': 'update', 
    'patch': 'partial_update', 
    'delete': 'destroy' 
}) 
urlpatterns = format_suffix_patterns([ 
    url(r'^', snippet_list, name='snippet-list'), 
    url(r'^snippets/$', snippet_list, name='snippet-list'), 
    url(r'^snippets/(?P<pk>[0-9]+)$', snippet_detail, name='snippet-detail'), 
    url(r'^users/$', user_list, name='user-list'), 
    url(r'^users/(?P<pk>[0-9]+)/$', user_detail, name='user-detail'), 
]) 

表單模板：

<form action="{% url 'snippet-detail' pk=queryset.pk %}" method="post"> 
{% csrf_token %} 
{% render_form serializer %} 
<input type="submit" value="Save"> 
<a href="{% url 'snippet-detail' pk=queryset.pk %}" methods="delete">delete</a> 

所有點擊後，我能得到刪除按鈕將重新加載檢索視圖。除了刪除方法以外的所有東西都能正常工作我知道有一些我很想念的東西，但如果你能指出我朝着正確的方向看，我會很感激。

Answer 1

問題是，通過在對片段詳細信息網址的請求中使用delete方法來訪問您的銷燬視圖。 But that method is not available to html forms

所以你需要另一種方式來訪問此視圖，類似：

snippet_destroy = SnippetViewSet.as_view({ 
    'post': 'destroy', 
}) 

urlpatterns = format_suffix_patterns([ 
    url(r'^snippets/(?P<pk>[0-9]+)/delete$', snippet_destroy, name='snippet-delete'), 
]) 

，並使用

<form action="{% url 'snippet-delete' pk=queryset.pk %}" method="post"> 
    {% csrf_token %} 
    <input type="submit" value="Delete"> 
</form> 

你也許還希望你摧毀視圖返回與重定向到一個響應另一個網址。

---

原來的答覆：

您需要使用表單兩個動作，一個用於更新，一個用於刪除。表單可以使用delete方法發出請求，a標籤不能。

<form action="{% url 'snippet-detail' pk=queryset.pk %}" method="post"> 
    {% csrf_token %} 
    {% render_form serializer %} 
    <input type="submit" value="Save"> 
</form> 

<form action="{% url 'snippet-detail' pk=queryset.pk %}" method="delete"> 
    {% csrf_token %} 
    <input type="submit" value="Delete"> 
</form>