Accessing request.user in class based generic view CreateView in order to set FK field in Django

djangodjango-class-based-viewsdjango-generic-views

So I have a model that includes:

class Place(models.Model):
    ....
    created_by = models.ForeignKey(User)

My view is like so:

class PlaceFormView(CreateView):
    form_class = PlaceForm

    @method_decorator(login_required)
    def dispatch(self, *args, **kwargs):
        return super(PlaceFormView, self).dispatch(*args, **kwargs)

Is there a way for me to access request.user and set created_by to that user? I've looked through the docs, but can't seem to find any hints toward this.

Best Answer

How about overriding form_valid which does the form saving? Save it yourself, do whatever you want to it, then do the redirect.

class PlaceFormView(CreateView):
    form_class = PlaceForm

    @method_decorator(login_required)
    def dispatch(self, *args, **kwargs):
        return super(PlaceFormView, self).dispatch(*args, **kwargs)

    def form_valid(self, form):
        obj = form.save(commit=False)
        obj.created_by = self.request.user
        obj.save()        
        return http.HttpResponseRedirect(self.get_success_url())

Related Solutions

R – How to pass a User model into a form field (django)

maybe something like this - override the save() method where you can call encrypt method.

for decrypt you can use signal post_init, so every time you instantiate the model from the database the product_id field is decrypted automatically

class MyClass(models.Model):
    user_field = models.ForeignKey(User)
    product_id = EncryptedCharField()
    ...other fields...

    def save(self):
        self.product_id._encrypt(product_id, self.user_field)
        super(MyClass,self).save()

    def decrypt(self):
        if self.product_id != None:
            user = self.user_field
            self.product_id._decrypt(user=user)

def post_init_handler(sender_class, model_instance):
    if isinstance(model_instance, MyClass):
        model_instance.decrypt()

from django.core.signals import post_init
post_init_connect.connect(post_init_handler)


obj = MyClass(user_field=request.user) 
#post_init will be fired but your decrypt method will have
#nothing to decrypt, so it won't garble your input
#you'll either have to remember not to pass value of crypted fields 
#with the constructor, or enforce it with either pre_init method 
#or carefully overriding __init__() method - 
#which is not recommended officially

#decrypt will do real decryption work when you load object form the database

obj.product_id = 'blah'
obj.save() #field will be encrypted

maybe there is a more elegant "pythonic" way of doing this

Best Answer

Related Solutions

R – How to pass a User model into a form field (django)

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