Django Rest框架表单 [英] Django Rest Framework Form

问题描述

Django Rest框架附带一个从串行器返回HTML表单的渲染器 [1] 。在浏览文档然后通过代码之后，我仍然无法弄清楚如何让它呈现一个空白的表单。

Django Rest Framework comes with a renderer for returning a HTML form from a serializer[1]. After poring through the docs and then through the code, I still cannot figure out how to get it to render a blank form.

我无法弄清楚如何实例化一个空白的串行器。在DRF的文档中，他们说serializer与django的表单有非常相似的API。当您想在模板中使用空白表单时，使用MyForm（）实例化一个表单，并将其传递给模板上下文。但是，当我尝试使用序列化程序时，.data属性只是 {'detail'：'Not Found。'}

I can't figure out how to instantiate a blank serializer. In the docs for DRF they say the serializer has a very similar API to django's forms. When you want a blank form in a template, you instantiate one with MyForm() and pass it to the template context. However when I try that with a serializer, the .data attribute is just {'detail': 'Not Found.'}

我觉得我一定会错过一些显而易见的事情，因为渲染一个空白的表单似乎是HTMLFormRenderer的一个很大的用例。 >

一些源代码

I feel like I must be missing something blindingly obvious because rendering a blank form seems like a pretty major use case for an HTMLFormRenderer.

class CustomViewSet(ModelViewSet):
    lookup_field = 'id'
    pagination_class = MyCustomPagination
    serializer_class = MyModelSerializer
    renderer_classes = (JSONRenderer, BrowsableAPIRenderer, HTMLFormRenderer)

    def create(self, request, *args, **kwargs):
        # return an html form for GET requests to /api/my_model/create/.form

我很确定我的urlconf正确连接，请求最终在正确的地方，因为当我GET / api / my_model /< pk> /。form 我收到一个表单作为回应，与模型属性预先输入。我只想要一种方式来获得一个空白的表单...

I'm pretty sure I have the urlconf wired up right that the request ends up in the right place, because when I GET /api/my_model/<pk>/.form I get a form in response, with the model attributes pre-entered. I just want a way to get a blank form...

推荐答案

我设法返回一个表单的html代码片段，使用以下方法在我的观点：

I managed to return an html snippet for a form using the following method on my viewset:

class CustomViewSet(ModelViewSet):

    @list_route()
    def form(self, request, *args, **kwargs):
        serializer = self.get_serializer()
        renderer = HTMLFormRenderer()
        form_html = renderer.render(serializer.data, renderer_context={
            'template': 'rest_framework/api_form.html',
            'request': request
        })
        return HttpResponse(form_html)

我需要使用一个香草django HttpResponse，而不是休息框架的Response对象，以防止Response对象尝试重新呈现form_html与viewset的默认渲染器。此外，需要使用list_route装饰器来获取rest_framework的DefaultRouter来添加一个 my_model / form / 端点，但这并不意味着视图必须返回一个列表。

I needed to use a vanilla django HttpResponse, rather than rest framework's Response object, to prevent the Response object trying to re-render the form_html with the viewset's default renderer. Also, the list_route decorator is needed to get rest_framework's DefaultRouter to add a my_model/form/ endpoint, it doesn't mean the view has to return a list.

这篇关于Django Rest框架表单的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！