How to insert session User id in database .?

I am trying to insert session login user id in database... here is my code

view.py

from django.shortcuts import render,redirect, Http404

from django.forms import ModelForm

# Create your views here.

from marketing.forms import EmailForm

from marketing.models import MarketingMessage, Slider

from .models import Product, ProductImage,Book,Category,Product

from products.models import Product

class DealsForm(ModelForm):

    class Meta:

        model = Product

        fields = ['title','description','category','price','sale_price','slug','active','update_defaults','user']

        exclude = ('user',)

        

def deals(request, template_name='products/deals.html'):

    form = DealsForm(request.POST or None)

    if form.is_valid():

        form.save()

        return redirect('home')

    return render(request, template_name, {'form':form})

Model.py file

from django.conf import settings

from django.core.urlresolvers import reverse

from django.db import models

from django.db.models.signals import post_save

from django.contrib.auth.models import User

class Book(models.Model):

    name = models.CharField(max_length=200)

    pages = models.IntegerField()

    email = models.CharField(max_length=200)

   

    

    def __unicode__(self):

         return self.name

class Category(models.Model):

title = models.CharField(max_length=120)

description = models.TextField(null=True, blank=True)

slug = models.SlugField(unique=True)

featured = models.BooleanField(default=None)

timestamp = models.DateTimeField(auto_now_add=True, auto_now=False)

updated = models.DateTimeField(auto_now_add=False, auto_now=True)

active = models.BooleanField(default=True)

def __unicode__(self):

return self.title

      

class Product(models.Model):

title = models.CharField(max_length=120)

description = models.TextField(null=True, blank=True,max_length=200)

category = models.ManyToManyField(Category, null=True, blank=True)

price = models.DecimalField(decimal_places=2, max_digits=100, default=29.99)

sale_price = models.DecimalField(decimal_places=2, max_digits=100,\

null=True, blank=True)

slug = models.SlugField(unique=True)

timestamp = models.DateTimeField(auto_now_add=True, auto_now=False)

updated = models.DateTimeField(auto_now_add=False, auto_now=True)

active = models.BooleanField(default=True)

update_defaults = models.BooleanField(default=False)

user = models.ForeignKey(User)   

def __unicode__(self):

return self.title

class Meta:

unique_together = ('title', 'slug')

def get_price(self):

return self.price

def get_absolute_url(self):

return reverse("single_product", kwargs={"slug": self.slug})

def my_view(request):

            product = DealsForm.save(commit=False)

            product.user = request.username

            product.save()

class ProductImage(models.Model):

product = models.ForeignKey(Product)

image = models.ImageField(upload_to='products/images/')

featured = models.BooleanField(default=False)

thumbnail = models.BooleanField(default=False)

active = models.BooleanField(default=True)

updated = models.DateTimeField(auto_now_add=False, auto_now=True)

def __unicode__(self):

      return self.product.title

class VariationManager(models.Manager):

def all(self):

return super(VariationManager, self).filter(active=True)

def sizes(self):

return self.all().filter(category='size')

def colors(self):

return self.all().filter(category='color')

VAR_CATEGORIES = (

('size', 'size'),

('color', 'color'),

('package', 'package'),

)

class Variation(models.Model):

product = models.ForeignKey(Product)

category = models.CharField(max_length=120, choices=VAR_CATEGORIES, default='size')

title = models.CharField(max_length=120)

image = models.ForeignKey(ProductImage, null=True, blank=True)

price = models.DecimalField(max_digits=100, decimal_places=2, null=True, blank=True)

updated = models.DateTimeField(auto_now_add=False, auto_now=True)

active = models.BooleanField(default=True)

objects = VariationManager()

def __unicode__(self):

return self.title

def product_defaults(sender, instance, created, *args, **kwargs):

if instance.update_defaults:

categories = instance.category.all()

print categories

for cat in categories:

print cat.id

if cat.id == 1: #for t-shirts

small_size = Variation.objects.get_or_create(product=instance, 

category='size', 

title='Small')

medium_size = Variation.objects.get_or_create(product=instance, 

category='size', 

title='Medium')

large_size = Variation.objects.get_or_create(product=instance, 

category='size', 

title='Large')

instance.update_defaults = False

instance.save()

#print args, kwargs

post_save.connect(product_defaults, sender=Product)

can someone help me..? 

 

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