[Fixed]-Update Form with Django from GET value

Try to override get_object() method of IdentityUpdate class to select specific object from request’s GET parameters.

class IdentityUpdate(UpdateView) :

    model = Identity
    form_class = IdentityForm
    fields = '__all__'
    template_name = 'resume.html'

    def get_object(self):
        query_update = request.GET.get('q4')
        return get_object_or_404(Identity, pk=query_update)

If you prefer to work with function based view try to change Identity_Update() view to this:

def Identity_Update(request) :

    # ID object given by user
    query_update = request.GET.get('q4')
    obj = get_object_or_404(Identity, pk=query_update)

    if query_update : 
        updating_form = IdentityForm(request.POST, instance = obj)
    ....

I think the problem of you is :

when you post this form:

<form action="" method="post">{% csrf_token %}
    {{ form.as_p }}
    <input type="submit" value="Update" />
</form> 

the value in your q4 input will not be submit cause they are in different form, so you can’d get the q4(ID?) value in your view. So I suggest you should post then on the same form.