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" <[email protected]> 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)
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