How to create a unique slug in Django

Question

I am trying to create a unique slug in Django so that I can access a post via a url like this: http://www.example.com/buy-a-new-bike_Boston-MA-02111_2

The relevant m

Answer 1

just try to slug a unique values together , for example : i am going to slugfy time,username,ticket_subject together and save it as a slug, like the following :

from django.utils.text import slugify 
from datetime import datetime


time_now = datetime.now().strftime('%Y-%m-%d_%H:%M:%S')
class ticket(models.Model):
    TKT_USER = models.ForeignKey(User, related_name='TKT_USER', on_delete=models.CASCADE)
    TKT_SUB = models.CharField(max_length=20, db_index=True, verbose_name="ticket subject")
    TKT_BOD = models.TextField(verbose_name="ticket body")
    TKT_SLug = models.SlugField(blank=True, null=True, db_index=True, unique=True)



    def save(self , *args , **kwargs):
         if not self.TKT_SLug:
            data_to_slug = f"{time_now}_{self.TKT_USER}_{self.TKT_SUB}"
            self.TKT_SLug = slugify(data_to_slug)
            super(ticket , self).save(*args, **kwargs)

Answer 2

class Need(models.Model):
    title = models.CharField(max_length=50)
    us_zip = models.CharField(max_length=5)
    slug = models.SlugField(unique=True)

    def save(self, **kwargs):
        slug_str = "%s %s" % (self.title, self.us_zip) 
        super(Need, self).save()

Answer 3

Hi can you tried this function

class Training(models.Model):
    title = models.CharField(max_length=250)
    text = models.TextField()
    created_date = models.DateTimeField(
    auto_now_add=True, editable=False, )
    slug = models.SlugField(unique=True, editable=False, max_length=250)

    def __unicode__(self):
       return self.title

    def save(self, *args, **kwargs):
       self.slug =get_unique_slug(self.id,self.title,Training.objects)
       return super(Training, self).save(*args, **kwargs)

def get_unique_slug(id,title,obj):
    slug = slugify(title.replace('ı', 'i'))
    unique_slug = slug
    counter = 1
    while obj.filter(slug=unique_slug).exists():
       if(obj.filter(slug=unique_slug).values('id')[0]['id']==id):
           break
       unique_slug = '{}-{}'.format(slug, counter)
       counter += 1
    return unique_slug

Answer 4

I use this snippet for generating unique slug and my typical save method look like below

slug will be Django SlugField with blank=True but enforce slug in save method.

typical save method for Need model might look below

def save(self, **kwargs):
    slug_str = "%s %s" % (self.title, self.us_zip) 
    unique_slugify(self, slug_str) 
    super(Need, self).save(**kwargs)

and this will generate slug like buy-a-new-bike_Boston-MA-02111 , buy-a-new-bike_Boston-MA-02111-1 and so on. Output might be little different but you can always go through snippet and customize to your needs.

Answer 5

Django provides a SlugField model field to make this easier for you. Here's an example of it in a "blog" app's

class Post(models.Model):
    title = models.CharField(max_length=100)
    content = models.TextField(blank=True)

    slug = models.SlugField(unique=True)

    @models.permalink
    def get_absolute_url(self):
        return 'blog:post', (self.slug,)

Note that we've set unique=True for our slug field — in this project we will be looking up posts by their slug, so we need to ensure they are unique. Here's what our application's views.py might look like to do this:

from .models import Post

def post(request, slug):
    post = get_object_or_404(Post, slug=slug)

    return render(request, 'blog/post.html', {
        'post': post,
    })

Answer 6

My little code:

def save(self, *args, **kwargs):
    strtime = "".join(str(time()).split("."))
    string = "%s-%s" % (strtime[7:], self.title)
    self.slug = slugify(string)
    super(Need, self).save()