text: import uuid
  import os
  from django.db import models
  from django.contrib.auth.models import AbstractBaseUser,BaseUserManager,PermissionsMixin
  from django.conf import settings
  from django.db.models.deletion import CASCADE
  
  
  def recipe_image_file_path(instance,filename):
      #Generate the file path for recipe image
      ext = filename.split('.')[-1]
      filename = f'{uuid.uuid4()}.{ext}'
  
      return os.path.join('uploads/recipe/',filename)
  
  
  
  
  
  
  class UserManager(BaseUserManager):
      def create_user(self,email,password=None, **extra_fields):
          """Create user and save user"""
          if not email:
              raise ValueError('User must have an email address')
              
          user = self.model(email=self.normalize_email(email), **extra_fields)
          user.set_password(password)
          user.save(using=self._db)
          return user
      def create_superuser(self,email,password):
          #Create and save super user
          user = self.create_user(email,password)
          user.is_staff = True
          user.is_superuser = True
          user.save(using=self._db)
          return user
  
  class User(AbstractBaseUser,PermissionsMixin):
      """Custom user model that supports email instead to username"""
      email = models.EmailField(max_length=255, unique=True)
      name  = models.CharField(max_length=255)
  
      is_active = models.BooleanField(default=True)
      is_staff  = models.BooleanField(default=False)
  
      objects = UserManager()
  
      USERNAME_FIELD = 'email'
  
  
  class Tag(models.Model):
      #Tag to be used for a recipe
      name = models.CharField(max_length=255)
      user = models.ForeignKey(
          settings.AUTH_USER_MODEL,
          on_delete=models.CASCADE
      )
      def __str__(self):
          return self.name
  
  
  class Ingredient(models.Model):
      #Ingredient to be use in recipe
      name = models.CharField(max_length=255)
      user = models.ForeignKey(settings.AUTH_USER_MODEL,on_delete=models.CASCADE)
      def __str__(self):
          return self.name
  
  
  class Recipe(models.Model):
      #Recipe objects
      user            = models.ForeignKey(settings.AUTH_USER_MODEL,on_delete=CASCADE)
      title           = models.CharField(max_length=255)
      time_minutes    = models.IntegerField()
      price           = models.DecimalField(max_digits=5,decimal_places=2)
      link            = models.CharField(max_length=255,blank=True)
      ingredients     = models.ManyToManyField('Ingredient')
      tags            = models.ManyToManyField('Tag')
      image           = models.ImageField(null=True,upload_to=recipe_image_file_path)
  
      def __str__(self):
          return self.title
  
  
  