Re: null value in column violates not-null constraint

"form.instance.user"

should be

"form.instance.seller"

But the "null value in column" error could also apply to any of the
non-nullable fields in your Product model that are not set by the time
you save the instance.

On 5/25/17, Ismail Sarenkapic <ismailgim96@gmail.com> wrote:
> Tnx.
> The slug is not important here.
> The main question is how do I add product with current user!
>
> On Thursday, May 25, 2017 at 8:00:08 PM UTC+2, Muhammad wrote:
>>
>> Ismail,
>>
>> You don't seem to be handling the value for Product.slug anywhere, either
>>
>> in the model or the view.
>>
>> You can fix the slug issue by overriding the Product model's save ()
>> method like this:
>>
>> def save (self, *args, **kwargs):
>> if not self.slug:
>> self.slug = slugify(self.title)
>> super(Product, self).save (*args, **kwargs)
>>
>> This way, you can automatically generate the value of the slug field when
>>
>> a valid form is submitted.
>>
>> If you are still having problems, please, do let us know.
>>
>> All the best.
>>
>> Sincerely,
>> Muhammad
>>
>> On May 25, 2017 7:20 AM, "Ismail Sarenkapic" <ismai...@gmail.com
>> <javascript:>> wrote:
>>
>> Hi, I'm trying to create a digital marketplace site where users will be
>> able to register and submit their products.
>> I created the Product model and connected it with User with foreign
>> key.Everything seems to be alright, but when I submit my product i get
>> the
>> following error:
>>
>> null value in column violates not-null constraint
>> it looks like relation between product and user is not properly
>> configured(regardless of my mixin that is suppose to handle it)
>>
>> __________________________________________________________________________________________________________________________________
>> note that I'm using:
>>
>> database:postgresql
>>
>> allauth(for user registration)
>>
>> __________________________________________________________________________________________________________________________________
>>
>> ________
>> models.py
>>
>> from django.conf import settings
>> from django.db import models
>> from django.db.models.signals import pre_save, post_save
>> from django.core.urlresolvers import reverse
>> from django.utils.text import slugify
>> # Create your models here.
>>
>>
>>
>> class Product(models.Model):
>> seller = models.ForeignKey(settings.AUTH_USER_MODEL)
>> #user = models.OneToOneField(settings.AUTH_USER_MODEL)
>> # user = models.ForeignKey(settings.AUTH_USER_MODEL)
>> # managers = models.ManyToManyField(settings.AUTH_USER_MODEL,
>> related_name="managers_products", blank=True)
>> title = models.CharField(max_length=30)
>> #owiuerpoajsdlfkjasd;flkiu1p3o4u134123 ewjfa;sd
>> slug = models.SlugField(blank=True, unique=True)
>> description = models.TextField()
>> price = models.DecimalField(max_digits=100, decimal_places=2,
>> default=9.99, null=True,) #100.00
>>
>>
>> def __unicode__(self): #def __unicode__(self):
>> return self.title
>>
>> _______
>> views.py
>>
>>
>> from django.views import View
>> from django.views.generic import (
>> CreateView,
>> )
>>
>> from .forms import ProductModelForm
>> from .mixins import FormUserNeededMixin
>> # Create your views here.
>>
>>
>> class ProductCreateView(FormUserNeededMixin, CreateView):
>> form_class = ProductModelForm
>> template_name = 'create_view.html'
>>
>> _______
>> forms.py
>>
>> from django import forms
>>
>> from django.utils.text import slugify
>>
>> from .models import Product
>>
>>
>> class ProductModelForm(forms.ModelForm):
>> class Meta:
>> model = Product
>> fields = [
>> "title",
>> "description",
>> "price",
>> ]
>>
>> ________
>> mixins.py
>>
>> from django import forms
>> from django.forms.utils import ErrorList
>>
>> class FormUserNeededMixin(object):
>>
>> def form_valid(self, form):
>> if self.request.user.is_authenticated():
>> form.instance.user = self.request.user
>> return super(FormUserNeededMixin, self).form_valid(form)
>> else:
>> form._errors[forms.forms.NON_FIELD_ERRORS] = ErrorList(["User
>> must be logged in to continue."])
>> return self.form_invalid(form)
>>
>>
>>
>>
>>
>>
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>>
>> "Django users" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>>
>> email to django-users...@googlegroups.com <javascript:>.
>> To post to this group, send email to django...@googlegroups.com
>> <javascript:>.
>> Visit this group at https://groups.google.com/group/django-users.
>> To view this discussion on the web visit
>> https://groups.google.com/d/msgid/django-users/0d2d44eb-a2df-4f00-8d60-3f163ed72c9b%40googlegroups.com
>>
>> <https://groups.google.com/d/msgid/django-users/0d2d44eb-a2df-4f00-8d60-3f163ed72c9b%40googlegroups.com?utm_medium=email&utm_source=footer>
>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
>>
>>
>
> --
> You received this message because you are subscribed to the Google Groups
> "Django users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to django-users+unsubscribe@googlegroups.com.
> To post to this group, send email to django-users@googlegroups.com.
> Visit this group at https://groups.google.com/group/django-users.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/django-users/b1e017fa-d150-47ac-a2ee-886cb06e0a2a%40googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
>

--
You received this message because you are subscribed to the Google Groups "Django users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscribe@googlegroups.com.
To post to this group, send email to django-users@googlegroups.com.
Visit this group at https://groups.google.com/group/django-users.
To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CALn3ei0TWmnOWfsp7mbn%2BxKwWBN%3DqbT-g%3Df1H_ZaKhS6CT-EMw%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.