created CustomUserManager for easier create super/user

redbrickboard/accounts/models.py

 from django.db import models
-from django.contrib.auth.models import AbstractUser
+from django.contrib.auth.models import AbstractUser, UserManager
+
+
+class CustomUserManager(UserManager):
+    def create_user(self, email, password, **extra_fields):
+        if not email:
+            raise ValueError('Email for user must be set.')
+        email = self.normalize_email(email)
+        user = self.model(email=email, **extra_fields)
+        user.set_password(password)
+        user.save()
+        return user
+    
+    def create_superuser(self, email, password, **extra_fields):
+        extra_fields.setdefault('is_staff', True)
+        extra_fields.setdefault('is_superuser', True)
+
+        if extra_fields.get('is_staff') is not True:
+            raise ValueError('Superuser must have is_staff=True.')
+        if extra_fields.get('is_superuser') is not True:
+            raise ValueError('Superuser must have is_superuser=True.')
+        return self.create_user(email, password, **extra_fields)
 
 # Create your models here.
 class CustomUser(AbstractUser):
@@ -19,5 +40,7 @@ class CustomUser(AbstractUser):
     USERNAME_FIELD = 'email'
     REQUIRED_FIELDS = []
 
+    objects = CustomUserManager()
+
     def __str__(self):
         return self.first_name
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