Imgbin models structure

imgbin_models.py

from django.db import models
from django.contrib.auth.models import User
from cloudinary.models import CloudinaryField

class Tags(models.Model):
    name = models.CharField(max_length=225)
    slug = models.SlugField()

    def __str__(self):
        return self.name


class Bin(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE, blank=True, null=True)
    title = models.CharField(max_length=225)
    description = models.CharField(max_length=145, blank=True, null=True)
    image = CloudinaryField("image")
    tags = models.ManyToManyField(Tags, related_name="tags")
    created = models.DateTimeField(auto_now_add=True)
    modified = models.DateTimeField(auto_now=True)

    def __str__(self):
        return "{}".format(self.title)