How to save forms field in django

Question

i have some fields in my django models.

class Product(models.Model):
    user=models.ForeignKey(User)
    product_name = models.CharField(max_length=50)
    product_cost = models.IntegerField(default=0,null=True, blank=True)
    product_description = models.TextField(null=True, blank=True)
    quantity = models.IntegerField(default=0,null=True, blank=True)
    product_image = models.FileField(upload_to='images/',blank=True,null=True,)
    coupon_code = models.CharField(max_length=50)
    time = models.DateTimeField(default=timezone.now)


    def __str__(self):
        return self.product_name or u''

when i use form to save all the data from front end in my database i can do this.

class DocumentForm(forms.ModelForm):


    class Meta:
        model = Product

        fields = ('user','product_name','product_image','product_cost','product_description','product_description','coupon_code')

Problem is this i don't want to allow user to fill user data from front-end.when user save data it save request.user to user. I am new to work with forms so facing some issues. Please help me how can i do this. Thanks in advance.

I f i remove user field then how can i provide value to that field.that is mandatory field — vikrant, Nov 21 '16 at 12:42
I think this is a duplicate of [this question](http://stackoverflow.com/questions/9332040/in-django-how-do-you-pass-a-foreignkey-into-an-instance-of-a-model/9332588#9332588). — Alasdair, Nov 21 '16 at 12:50

Zagorodniy Olexiy · Answer 1 · 2016-11-21T20:52:59.717

In fields you have to remove user: so it will look like this: class DocumentForm(forms.ModelForm):

class Meta:
    model = Product

    fields = ('product_name','product_image','product_cost','product_description','product_description','coupon_code')

and in your views.py when you save the data from the form you have write something like this:

user = request.user

in this case user will be saved if he is authenticated.

If you want that not authenticated user could fill the form too, you have to change in your model.py Product class from:

user=models.ForeignKey(User)

to:

user=models.ForeignKey(User, null=True)

then not authenticated user will be NULL.

error showing.NOT NULL constraint failed: userInfo_product.user_id — vikrant, Nov 21 '16 at 16:29

How to save forms field in django

1 Answers1