ticketapi-models.py

from django.db import models
import uuid
from django.contrib.auth.models import User
# Create your models here.

def generate_ticket_id():
    return str(uuid.uuid4()).split("-")[-1] #generate unique ticket id

class Ticket(models.Model):
    title = models.CharField(max_length=255)
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    content = models.TextField()
    category = models.ForeignKey("Category", on_delete=models.CASCADE)
    ticket_id = models.CharField(max_length=255, blank=True)
    created = models.DateTimeField(auto_now=True)
    modified = models.DateTimeField(auto_now_add=True)

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

    def save(self, *args, **kwargs):
        if len(self.ticket_id.strip(" "))==0:
            self.ticket_id = generate_ticket_id()

        super(Ticket, self).save(*args, **kwargs) # Call the real   save() method

    class Meta:
        ordering = ["-created"]

class Category(models.Model):
    name = models.CharField(max_length=200)
    slug = models.SlugField()
    
    def __str__(self):
       return self.name