class Category(models.Model):
        name=models.CharField(max_length=100)
        slug_name=models.CharField(max_length=100)

        def __unicode__(self):
                return u'%s' % (self.name)

class News(models.Model):
         title = models.CharField(max_length=1000)
         body=models.CharField(max_length=1000)
         image=models.ImageField(upload_to='/img')
         categoryes =models.ManyToManyField(Category)
         date_public=models.DateField(auto_now_add=True)
         date_change=models.DateField(auto_now=True)
         slug_title=models.CharField(max_length=100)
         similar_news=models.ManyToManyField("self")

         def __unicode__(self):
                return u'%s' % (self.title)

from django.contrib import admin

class AdminNews(admin.ModelAdmin):
           prepopulated_fields = {'slug_title': ('title',)}
           list_display=('title', 'body')
           ordering=('title',)

class AdminCategory (admin.ModelAdmin):
          prepopulated_fields = {'slug_name': ('name',)}
          list_display=('name', 'slug_name')
          ordering=('name',)

@render_to('addedNews.html')
def addedNews(request):
       if request.method=='POST':
                f=NewsForm(request.POST,request.FILES)
                if f.is_valid():
                      new_news=f.save(commit=False)
                      new_news.some_field='some_value'
                      new_news.save()
                      f.save_m2m()
                      return HttpResponseRedirect('/thanks.html')
       else:
               f=NewsForm()
return {'form':f}