Adding cookbook example app demoing new django functionality

Author: Adam Charnock

.gitignore

@@ -74,4 +74,7 @@ target/
 /docs/static/playground
 
 # PyCharm
-/.idea
+.idea
+
+# Databases
+*.sqlite3

examples/cookbook/cookbook/__init__.py

@@ -0,0 +1,6 @@
+from django.contrib import admin
+
+from cookbook.ingredients.models import Ingredient, Category
+
+admin.site.register(Ingredient)
+admin.site.register(Category)

examples/cookbook/cookbook/ingredients/__init__.py

@@ -0,0 +1,7 @@
+from django.apps import AppConfig
+
+
+class IngredientsConfig(AppConfig):
+    name = 'cookbook.ingredients'
+    label = 'ingredients'
+    verbose_name = 'Ingredients'

examples/cookbook/cookbook/ingredients/admin.py

@@ -0,0 +1 @@
+[{"model": "ingredients.category", "pk": 1, "fields": {"name": "Dairy"}}, {"model": "ingredients.category", "pk": 2, "fields": {"name": "Meat"}}, {"model": "ingredients.ingredient", "pk": 1, "fields": {"name": "Eggs", "notes": "Good old eggs", "category": 1}}, {"model": "ingredients.ingredient", "pk": 2, "fields": {"name": "Milk", "notes": "Comes from a cow", "category": 1}}, {"model": "ingredients.ingredient", "pk": 3, "fields": {"name": "Beef", "notes": "Much like milk, this comes from a cow", "category": 2}}, {"model": "ingredients.ingredient", "pk": 4, "fields": {"name": "Chicken", "notes": "Definitely doesn't come from a cow", "category": 2}}]

examples/cookbook/cookbook/ingredients/apps.py

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9 on 2015-12-04 18:15
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Category',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=100)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Ingredient',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=100)),
+                ('notes', models.TextField()),
+                ('category', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='ingredients', to='ingredients.Category')),
+            ],
+        ),
+    ]

examples/cookbook/cookbook/ingredients/fixtures/ingredients.json

@@ -0,0 +1,17 @@
+from django.db import models
+
+
+class Category(models.Model):
+    name = models.CharField(max_length=100)
+
+    def __str__(self):
+        return self.name
+
+
+class Ingredient(models.Model):
+    name = models.CharField(max_length=100)
+    notes = models.TextField()
+    category = models.ForeignKey(Category, related_name='ingredients')
+
+    def __str__(self):
+        return self.name

examples/cookbook/cookbook/ingredients/migrations/0001_initial.py

@@ -0,0 +1,38 @@
+from graphene import relay, ObjectType
+from graphene.contrib.django.filter import DjangoFilterConnectionField
+from graphene.contrib.django.types import DjangoNode
+
+from cookbook.ingredients.models import Category, Ingredient
+
+
+# Graphene will automatically map the User model's fields onto the UserType.
+# This is configured in the UserType's Meta class (as you can see below)
+class CategoryNode(DjangoNode):
+    class Meta:
+        model = Category
+        filter_fields = ['name', 'ingredients']
+        filter_order_by = ['name']
+
+
+class IngredientNode(DjangoNode):
+    class Meta:
+        model = Ingredient
+        # Allow for some more advanced filtering here
+        filter_fields = {
+            'name': ['exact', 'icontains', 'istartswith'],
+            'notes': ['exact', 'icontains'],
+            'category': ['exact'],
+            'category__name': ['exact'],
+        }
+        filter_order_by = ['name', 'category__name']
+
+
+class Query(ObjectType):
+    category = relay.NodeField(CategoryNode)
+    all_categories = DjangoFilterConnectionField(CategoryNode)
+
+    ingredient = relay.NodeField(IngredientNode)
+    all_ingredients = DjangoFilterConnectionField(IngredientNode)
+
+    class Meta:
+        abstract = True