Making the example working for Django 2.1.2

Author: alqinae

examples/cookbook-plain/cookbook/ingredients/models.py

@@ -2,6 +2,8 @@
 
 
 class Category(models.Model):
+    class Meta:
+        verbose_name_plural = 'Categories'
     name = models.CharField(max_length=100)
 
     def __str__(self):
@@ -11,7 +13,7 @@ def __str__(self):
 class Ingredient(models.Model):
     name = models.CharField(max_length=100)
     notes = models.TextField(null=True, blank=True)
-    category = models.ForeignKey(Category, related_name='ingredients')
+    category = models.ForeignKey(Category, related_name='ingredients', on_delete=models.CASCADE)
 
     def __str__(self):
         return self.name

examples/cookbook-plain/cookbook/ingredients/schema.py

@@ -1,7 +1,7 @@
 import graphene
 from graphene_django.types import DjangoObjectType
 
-from cookbook.ingredients.models import Category, Ingredient
+from .models import Category, Ingredient
 
 
 class CategoryType(DjangoObjectType):
@@ -25,16 +25,16 @@ class Query(object):
                                 name=graphene.String())
     all_ingredients = graphene.List(IngredientType)
 
-    def resolve_all_categories(self, args, context, info):
+    def resolve_all_categories(self, context, **kwargs):
         return Category.objects.all()
 
-    def resolve_all_ingredients(self, args, context, info):
+    def resolve_all_ingredients(self, context, **kwargs):
         # We can easily optimize query count in the resolve method
         return Ingredient.objects.select_related('category').all()
 
-    def resolve_category(self, args, context, info):
-        id = args.get('id')
-        name = args.get('name')
+    def resolve_category(self, context, **kwargs):
+        id = kwargs.get('id')
+        name = kwargs.get('name')
 
         if id is not None:
             return Category.objects.get(pk=id)
@@ -44,9 +44,9 @@ def resolve_category(self, args, context, info):
 
         return None
 
-    def resolve_ingredient(self, args, context, info):
-        id = args.get('id')
-        name = args.get('name')
+    def resolve_ingredient(self, context, **kwargs):
+        id = kwargs.get('id')
+        name = kwargs.get('name')
 
         if id is not None:
             return Ingredient.objects.get(pk=id)

examples/cookbook-plain/cookbook/recipes/models.py

@@ -1,17 +1,18 @@
 from django.db import models
 
-from cookbook.ingredients.models import Ingredient
+from ..ingredients.models import Ingredient
 
 
 class Recipe(models.Model):
     title = models.CharField(max_length=100)
     instructions = models.TextField()
-    __unicode__ = lambda self: self.title
+    def __str__(self):
+        return self.title
 
 
 class RecipeIngredient(models.Model):
-    recipe = models.ForeignKey(Recipe, related_name='amounts')
-    ingredient = models.ForeignKey(Ingredient, related_name='used_by')
+    recipe = models.ForeignKey(Recipe, related_name='amounts', on_delete=models.CASCADE)
+    ingredient = models.ForeignKey(Ingredient, related_name='used_by', on_delete=models.CASCADE)
     amount = models.FloatField()
     unit = models.CharField(max_length=20, choices=(
         ('unit', 'Units'),

examples/cookbook-plain/cookbook/recipes/schema.py

@@ -1,7 +1,7 @@
 import graphene
 from graphene_django.types import DjangoObjectType
 
-from cookbook.recipes.models import Recipe, RecipeIngredient
+from .models import Recipe, RecipeIngredient
 
 
 class RecipeType(DjangoObjectType):
@@ -24,9 +24,9 @@ class Query(object):
                                       id=graphene.Int())
     all_recipeingredients = graphene.List(RecipeIngredientType)
 
-    def resolve_recipe(self, args, context, info):
-        id = args.get('id')
-        title = args.get('title')
+    def resolve_recipe(self, context, **kwargs):
+        id = kwargs.get('id')
+        title = kwargs.get('title')
 
         if id is not None:
             return Recipe.objects.get(pk=id)
@@ -36,17 +36,17 @@ def resolve_recipe(self, args, context, info):
 
         return None
 
-    def resolve_recipeingredient(self, args, context, info):
-        id = args.get('id')
+    def resolve_recipeingredient(self, context, **kwargs):
+        id = kwargs.get('id')
 
         if id is not None:
             return RecipeIngredient.objects.get(pk=id)
 
         return None
 
-    def resolve_all_recipes(self, args, context, info):
+    def resolve_all_recipes(self, context, **kwargs):
         return Recipe.objects.all()
 
-    def resolve_all_recipeingredients(self, args, context, info):
+    def resolve_all_recipeingredients(self, context, **kwargs):
         related = ['recipe', 'ingredient']
         return RecipeIngredient.objects.select_related(*related).all()

examples/cookbook-plain/cookbook/settings.py

@@ -44,13 +44,12 @@
     'cookbook.recipes.apps.RecipesConfig',
 ]
 
-MIDDLEWARE_CLASSES = [
+MIDDLEWARE = [
     'django.middleware.security.SecurityMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.middleware.common.CommonMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
     'django.contrib.auth.middleware.AuthenticationMiddleware',
-    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
 ]

examples/cookbook-plain/cookbook/urls.py

@@ -1,10 +1,10 @@
-from django.conf.urls import url
+from django.urls import path
 from django.contrib import admin
 
 from graphene_django.views import GraphQLView
 
 
 urlpatterns = [
-    url(r'^admin/', admin.site.urls),
-    url(r'^graphql', GraphQLView.as_view(graphiql=True)),
+    path('admin/', admin.site.urls),
+    path('graphql/', GraphQLView.as_view(graphiql=True)),
 ]

examples/cookbook-plain/requirements.txt

@@ -1,4 +1,4 @@
 graphene
 graphene-django
 graphql-core>=2.1rc1
-django==1.9
+django==2.1.2