First version

cookbook/settings.py

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+"""
+Django settings for cookbook project.
+
+Generated by 'django-admin startproject' using Django 2.2.6.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/2.2/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/2.2/ref/settings/
+"""
+
+import os
+
+# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
+BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+
+# Quick-start development settings - unsuitable for production
+# See https://docs.djangoproject.com/en/2.2/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = '8gsq4)bizv-z441x%g==o6@5w5k_%&(eyu5g-o23wdw8(^cm9g'
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = ['192.168.1.42']
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    'recipes.apps.RecipesConfig',
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    'markdownx',
+]
+
+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.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+]
+
+ROOT_URLCONF = 'cookbook.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = 'cookbook.wsgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/2.2/ref/settings/#databases
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.postgresql',
+        'NAME': 'cookbook',
+        'USER': 'cookbook',
+        'PASSWORD': 'cookbook',
+        'HOST': '127.0.0.1',
+        'PORT': '5432',
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/2.2/ref/settings/#auth-password-validators
+
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
+    },
+]
+
+
+# Internationalization
+# https://docs.djangoproject.com/en/2.2/topics/i18n/
+
+LANGUAGE_CODE = 'en-us'
+
+TIME_ZONE = 'Europe/Paris'
+
+USE_I18N = True
+
+USE_L10N = True
+
+USE_TZ = True
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/2.2/howto/static-files/
+
+STATIC_URL = '/static/'

cookbook/urls.py

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+"""cookbook URL Configuration
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/2.2/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+from django.contrib import admin
+from django.urls import include,path
+
+urlpatterns = [
+    path('recipes/', include('recipes.urls')),
+    path('admin/', admin.site.urls),
+    url(r'^markdownx/', include('markdownx.urls')),
+]

cookbook/wsgi.py

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+"""
+WSGI config for cookbook project.
+
+It exposes the WSGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/2.2/howto/deployment/wsgi/
+"""
+
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'cookbook.settings')
+
+application = get_wsgi_application()

manage.py

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+#!/usr/bin/env python
+"""Django's command-line utility for administrative tasks."""
+import os
+import sys
+
+
+def main():
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'cookbook.settings')
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
+    execute_from_command_line(sys.argv)
+
+
+if __name__ == '__main__':
+    main()

recipes/admin.py

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+from django.contrib import admin
+
+from .models import Recipe, Ingredient, IngredientUsage
+
+class IngredientUsageInline(admin.TabularInline):
+    model = IngredientUsage
+    extra = 1
+
+class RecipeAdmin(admin.ModelAdmin):
+    inlines = (IngredientUsageInline,)
+    fields =  [ 'name', 'protocol' ]
+
+admin.site.register(Recipe,RecipeAdmin)
+admin.site.register(Ingredient)

recipes/apps.py

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+from django.apps import AppConfig
+
+
+class RecipesConfig(AppConfig):
+    name = 'recipes'

recipes/migrations/0001_initial.py

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+# Generated by Django 2.2.6 on 2019-10-25 12:09
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Ingredient',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=128)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='IngredientUsage',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('quantity', models.CharField(max_length=64)),
+                ('ingredient', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='recipes.Ingredient')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Recipe',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=128)),
+                ('ingredients', models.ManyToManyField(through='recipes.IngredientUsage', to='recipes.Ingredient')),
+            ],
+        ),
+        migrations.AddField(
+            model_name='ingredientusage',
+            name='recipe',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='recipes.Recipe'),
+        ),
+    ]

recipes/migrations/0002_recipe_protocol.py

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+# Generated by Django 2.2.6 on 2019-10-28 15:21
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('recipes', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='recipe',
+            name='protocol',
+            field=models.TextField(default=''),
+        ),
+    ]

recipes/models.py

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+from django.db import models
+
+class Ingredient(models.Model):
+    name = models.CharField(max_length=128)
+
+    def __str__(self):
+        return self.name
+
+class Recipe(models.Model):
+    name = models.CharField(max_length=128)
+    ingredients = models.ManyToManyField(Ingredient, through='IngredientUsage')
+    protocol = models.TextField(default='')
+
+    def __str__(self):
+        return self.name
+
+class IngredientUsage(models.Model):
+    recipe = models.ForeignKey(Recipe, on_delete=models.CASCADE)
+    ingredient = models.ForeignKey(Ingredient, on_delete=models.CASCADE)
+    quantity = models.CharField(max_length=64)

recipes/templates/recipes/detail.html

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+<h1>{{ recipe.name }}</h1>
+<h2>Ingredients</h2>
+<ul>
+    {% for ingredient in ingredient_list %}
+    <li>{{ ingredient.quantity }} {{ ingredient.ingredient }}</li>
+    {% endfor %}
+</ul>
+
+<h2>Steps</h2>
+<p>{{ recipe.protocol }}</p>

recipes/templates/recipes/index.html

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+{% if recipe_list %}
+<ul>
+    {% for recipe in recipe_list %}
+    <li><a href="{% url 'recipes:detail' recipe.id %}">{{ recipe.name }}</a></li>
+    {% endfor %}
+</ul>
+{% else %}
+<p>No recipes are available.</p>
+{% endif %}

recipes/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

recipes/urls.py

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+from django.urls import path
+
+from . import views
+
+app_name = 'recipes'
+urlpatterns = [
+    path('', views.IndexView.as_view(), name='index'),
+    path('<int:pk>/', views.DetailView.as_view(), name='detail'),
+]

recipes/views.py

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+from django.views import generic
+
+from .models import Recipe, IngredientUsage
+
+
+class IndexView(generic.ListView):
+    template_name = 'recipes/index.html'
+
+    def get_queryset(self):
+        return Recipe.objects.order_by('name')
+
+
+class DetailView(generic.DetailView):
+    model = Recipe
+    template_name = 'recipes/detail.html'
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context['ingredient_list'] = IngredientUsage.objects.filter(recipe=self.object.pk)
+        return context