Начальное заначене для Create/Update View в Django

Как то раз мне понадобилось начальные данные в форму создания. Это решилось довольно просто переопределением метода get_initial

<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">MessageDialogView</span>(<span class="hljs-params">CreateView</span>):</span>
    <span class="hljs-string">""" show html form fragment """</span>
    model = Message
    template_name = <span class="hljs-string">"message.html"</span>

    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">get_initial</span>(<span class="hljs-params">self</span>):</span>
        <span class="hljs-built_in">super</span>(MessageDialogView, self).get_initial()
        alert = Alert.objects.get(pk=self.request.POST.get(<span class="hljs-string">"alert_id"</span>))
        user = self.request.user
        self.initial = {<span class="hljs-string">"alert"</span>:alert.<span class="hljs-built_in">id</span>, <span class="hljs-string">"user"</span>:user.<span class="hljs-built_in">id</span>, <span class="hljs-string">"message"</span>:<span class="hljs-string">"test"</span>}
        <span class="hljs-keyword">return</span> self.initial


    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">post</span>(<span class="hljs-params">self, request, *args, **kwargs</span>):</span>
        <span class="hljs-built_in">super</span>(MessageDialogView, self).post(request, *args, **kwargs)
        form_class = self.get_form_class()
        form = self.get_form(form_class)
        context = self.get_context_data(form=form)
        <span class="hljs-keyword">return</span> self.render_to_response(context)

class MessageDialogView(CreateView):

""" show html form fragment """

model = Message

template_name = "message.html"

def get_initial(self):

super(MessageDialogView, self).get_initial()

alert = Alert.objects.get(pk=self.request.POST.get("alert_id"))

user = self.request.user

self.initial = {"alert":alert.id, "user":user.id, "message":"test"}

return self.initial

def post(self, request, *args, **kwargs):

super(MessageDialogView, self).post(request, *args, **kwargs)

form_class = self.get_form_class()

form = self.get_form(form_class)

context = self.get_context_data(form=form)

return self.render_to_response(context)

Начальное заначене для Create/Update View в Django

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