add slug in display urls

 step1:  add slugfield in models.py

            class Post(models.Model):

    title = models.CharField(max_length=200)

    description = models.CharField(max_length=200)

    content=models.CharField(max_length=2000)

    image=models.ImageField(default='tt.jpg',blank=True,upload_to='postimage')

    date=models.DateField(default=timezone.now)

    slug=models.SlugField(max_length=200,blank=True,null=True)

    

    def __str__(self):

        return self.title 

step2:make a function in models.py 

      def slug_generator(sender,instance,*args, **kwargs):

    if not instance.slug:

      #  instance.slug='SLUG'

      instance.slug=unique_slug_generator(instance)

step3: connect database class and upper functions in models.py

          pre_save.connect(slug_generator,sender=Post)

step4: import pre_save in models.py

         from django.db.models.signals import pre_save 

step5:create utils.py in main project 

step6: inside utils.py save this

          import string

from django.utils.text import slugify

def random_string_generator(size=10, chars=string.ascii_lowercase + string.digits):

    return ''.join(random.choice(chars) for _ in range(size))

def unique_slug_generator(instance, new_slug=None):

    """

    This is for a Django project and it assumes your instance 

    has a model with a slug field and a title character (char) field.

    """

    if new_slug is not None:

        slug = new_slug

    else:

        slug = slugify(instance.title)

    Klass = instance.__class__

    qs_exists = Klass.objects.filter(slug=slug).exists()

    if qs_exists:

        new_slug = "{slug}-{randstr}".format(

            slug=slug,

            randstr=random_string_generator(size=4)

        )

        return unique_slug_generator(instance, new_slug=new_slug)

    return slug

step 7: in models.py

from rajivdahal.utils import unique_slug_generator

now you can see slug generated in database admin pagge before saving

step8: template and showing method

8.1:<div class="postcontent">{{post.content|slice:"0:100"}}.....<a href="viewpost/{{post.slug}}"><span>continue reading</span></a> </div>

8.2:update urls.py

path('viewpost/<slug:slug_text>/',views.viewpost,name='viewpost'),

8.3:views.py

def viewpost(request,slug_text):

    

    post=Post.objects.filter(slug=slug_text)

    context={'post':post}

    return render(request,'viewpost.html',context)