Use url parameter in class based view Django

Question

I have a view (CreateWorkRelationView) that makes use of the CreateView CBV. In the URL, a parameter is passed (user) that I need to refer to a lot. Is it possible to set the object user outside the functions in my class? So are you able to access kwargs from outside a function?

So I basically just want to add the following line to my class

user = get_object_or_404(Contact.pk=kwargs['user'])

At the moment however, that returns

NameError: name 'kwargs' is not defined

This is my class

class CreateWorkRelationView(LoginRequiredMixin, SuccessMessageMixin, CreateView):
    template_name = 'groups/group_form.html'
    form_class = WorkRelationForm
    model = WorkRelation
    title = "Add a work relation"
    success_message = "Workrelation was successfully created."


    def form_valid(self, form):
        user = get_object_or_404(Contact, pk=self.kwargs['user'])
        form.instance.contact = user
        return super(CreateWorkRelationView, self).form_valid(form)

    def get_success_url(self):
        return reverse_lazy('contacts:contact_detail', self.kwargs['user'])

The reason why I would like to do this, is:

I want to use this object in my title string.
I am going to add a couple of more functions, and they all need this object.

If you're looking for the logged in user you can use self.request.user but I may be missing something — Arnaud
– Arnaud, Commented Sep 14, 2016 at 19:35

Arnaud · Accepted Answer · 2016-09-14 19:34:17Z

3

The way I managed to do this is to use a FormView.

In my urls.py i have

regex=r'^my/path/(?P<pk>\d+)$',

In my views

class MyCreateView(LoginRequiredMixin, FormView):
    def form_valid(self, form):
        data = self.kwargs['pk']

It works well.

answered Sep 14, 2016 at 19:34

Arnaud

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1 Comment

slogan621 Over a year ago

Why so long for this answer to get a +1? Thanks, wasted hours until I stumbled on this answer.

Daniel Roseman · Accepted Answer · 2015-12-25 12:41:28Z

2

No, that can't possibly work; you don't have a user, or kwargs, or even a request at the time the class is defined. You need to do this inside one of the methods called at request time; probably get_context_data or get_object.

answered Dec 25, 2015 at 12:41

Daniel Roseman

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2 Comments

hY8vVpf3tyR57Xib Over a year ago

But am I able to reference tot this context_data in other functions?

Daniel Roseman Over a year ago

If you assign it to an instance attribute, yes.

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