[Answered ]-Django – FormView combined with Mixin

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By default, a FormView (actually, any subclass of ProcessFormView) will return a HttpResponseRedirect in form_valid. As you are calling the super‘s method in your form_valid method, you also return a HttpResponseRedirect. In the process, the actual POST data is lost, and though you pass it as a GET parameter, it is not used in the actual form.

To fix this, you need to not call super in your form_valid method, but instead return a rendered template in a HttpResponse object, e.g.:

def form_valid(self, form):
    self.query = form.cleaned_data['query']
    self.concepts = # here is a long DB query; function(query)

    return self.render_to_response(self.get_context_data(form=form))
👤knbk

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