Some django sample code

gistfile1.py

class Item(models.Model):
    category = models.ForeignKey(Category, related_name='items')
    city = models.ForeignKey(City, verbose_name=u'المنطقة', related_name='items')
    activation_code = models.CharField(max_length=64)
    is_active = models.BooleanField(default=False)
    is_deleted = models.BooleanField(default=False)
    email = models.EmailField(u'البريد الإلكتروني')
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    title = models.CharField(u'العنوان', max_length=200)
    price = models.IntegerField(u'السعر', default=0)
    condition = models.CharField(u'الحالة', max_length=1, choices=CONDITION_CHOICES, default='o')
    bedrooms = models.IntegerField(u'غرف النوم', default=0)
    bathrooms = models.IntegerField(u'الحمامات', default=0)
    transmission = models.CharField(u'القير', max_length=1, choices=TRANSMISSION_CHOICES, default='n')
    mileage = models.IntegerField(u'المسافة المقطوعة', default=0)
    year = models.IntegerField(u'السنة', default=0)
    pet = models.CharField(u'الفصيلة', max_length=1, choices=PET_CHOICES, default='o')
    description = models.TextField(u'التفاصيل')
    
    objects = ItemManager()
    
    class Meta():
        ordering = ('-created_at',)
    
    def __unicode__(self):
        return self.title
    
    def get_absolute_url(self):
        return reverse('item_url', args=[self.id])
    
    def get_verification_url(self):
        return Site.objects.get_current().domain + reverse('activation_url', args=[self.activation_code])
    
    def get_edit_url(self):
        return Site.objects.get_current().domain + reverse('edit_item_url', args=[self.id, self.activation_code])

###########################################

def new_item(request, category_slug):
    category = Category.objects.get(slug=category_slug)
    fields_list = category.show_fields.split(',')
    item_form = ItemForm(fields_list)
    image_forms = [ImageForm(prefix='image-%d' % i) for i in range(4)]
    if request.method == 'POST':
        item_form = ItemForm(fields_list, data=request.POST)
        image_forms = [ImageForm(request.POST, request.FILES, prefix='image-%d' % i) for i in range(4)]
        if item_form.is_valid():
            item = item_form.save(commit=False)
            item.category = category
            item.save()
            for image_form in image_forms:
                if image_form.is_valid():
                    image = image_form.save(commit=False)
                    image.item = item
                    image.save()
            return HttpResponseRedirect(reverse('item_added_url'))
    
    return render_to_response('items/new_item.html', {
        'category': category,
        'item_form': item_form,
        'image_forms': image_forms,
        }, context_instance=RequestContext(request))


####################################################

def edit_item(request, item_id, code):
    item = Item.objects.get(pk=item_id, activation_code=code, is_active=True)
    fields_list = item.category.show_fields.split(',')
    item_form = ItemForm(fields_list, new_item=False, instance=item)
    if request.method == 'POST':
        item_form = ItemForm(fields_list, new_item=False, data=request.POST, instance=item)
        if item_form.is_valid():
            item = item_form.save()
            return HttpResponseRedirect(reverse('item_url', args=[item.id]))
    return render_to_response('items/edit_item.html', {
        'item_form': item_form,
        'item': item,
        }, context_instance=RequestContext(request))

###################################################

class Team(models.Model):
    name = models.CharField(u'اسم الفريق', max_length=100, unique=True)
    is_active = models.BooleanField(default=False)
    is_paid = models.BooleanField(default=False)
    level = models.FloatField(default=0.0)
    is_available = models.BooleanField(default=False)
    manager = models.OneToOneField(User)
    created_at = models.DateTimeField(auto_now_add=True)
    
    class Meta():
        ordering = ('name',)
    
    def __unicode__(self):
        return self.name

##################################################

@login_required
def add_new(request):
    if request.user.get_profile().team:
        return HttpResponse('You already have or belong to a team')
    
    team_form = NewTeamForm()
    
    if request.method == 'POST':
        team_form = NewTeamForm(request.POST)
        
        if team_form.is_valid():
            team = team_form.save(commit=False)
            team.manager = request.user
            team.save()
            profile = request.user.get_profile()
            profile.team = team
            profile.save()
            return HttpResponseRedirect(reverse('home_path'))
    
    return render_to_response('teams/new.html', {
        'team_form': team_form,
        }, context_instance=RequestContext(request))