Merge pull request #334 from fusion44/master

Docs: Update Cookbook tutorial

docs/tutorial-plain.rst

@@ -68,8 +68,8 @@ Let's get started with these models:
     class Ingredient(models.Model):
         name = models.CharField(max_length=100)
         notes = models.TextField()
-        category = models.ForeignKey(Category, related_name='ingredients',
+        category = models.ForeignKey(
-           on_delete=models.CASCADE)
+            Category, related_name='ingredients', on_delete=models.CASCADE)
 
         def __str__(self):
             return self.name
@@ -84,6 +84,7 @@ Add ingredients as INSTALLED_APPS:
         'cookbook.ingredients',
     ]
 
+
 Don't forget to create & run migrations:
 
 .. code:: bash
@@ -112,6 +113,18 @@ Alternatively you can use the Django admin interface to create some data
 yourself. You'll need to run the development server (see below), and
 create a login for yourself too (``./manage.py createsuperuser``).
 
+Register models with admin panel:
+
+.. code:: python
+
+    # cookbook/ingredients/admin.py
+    from django.contrib import admin
+    from cookbook.ingredients.models import Category, Ingredient
+
+    admin.site.register(Category)
+    admin.site.register(Ingredient)
+
+
 Hello GraphQL - Schema and Object Types
 ---------------------------------------