Marc's Cars_and_Brands WIP solution

.gitignore

@@ -1,4 +1,4 @@
-venv/
+.venv/
 .vscode/
 __pycache__/
 *.py[cod]

car_app/car_app/urls.py

@@ -1,21 +1,7 @@
-"""car_app URL Configuration
-
-The `urlpatterns` list routes URLs to views. For more information please see:
-    https://docs.djangoproject.com/en/2.1/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 path
+from django.urls import path, include
 
 urlpatterns = [
     path('admin/', admin.site.urls),
+    path('brands/', include('cars_and_brands.urls'))
 ]

car_app/cars_and_brands/admin.py

@@ -1,3 +1,6 @@
 from django.contrib import admin
+from .models import Brand, Car
 
 # Register your models here.
+admin.site.register(Brand)
+admin.site.register(Car)

car_app/cars_and_brands/forms.py

@@ -0,0 +1,12 @@
+from django import forms
+from .models import Brand, Car
+
+class BrandForm(forms.ModelForm):
+    class Meta:
+        model = Brand
+        fields = ('name',)
+
+class CarForm(forms.ModelForm):
+    class Meta:
+        model = Car
+        fields = ('name', 'year')

car_app/cars_and_brands/migrations/0001_initial.py

@@ -0,0 +1,31 @@
+# Generated by Django 2.1.3 on 2021-07-14 01:53
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Brand',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=200)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Car',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=200)),
+                ('year', models.CharField(max_length=200)),
+                ('brand', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='cars', to='cars_and_brands.Brand')),
+            ],
+        ),
+    ]

car_app/cars_and_brands/migrations/0002_auto_20210714_0311.py

@@ -0,0 +1,29 @@
+# Generated by Django 2.1.3 on 2021-07-14 03:11
+
+import cars_and_brands.models
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cars_and_brands', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='brand',
+            name='name',
+            field=models.CharField(max_length=200, validators=[cars_and_brands.models.validate_brand_name_presence]),
+        ),
+        migrations.AlterField(
+            model_name='car',
+            name='name',
+            field=models.CharField(max_length=200, validators=[cars_and_brands.models.validate_car_name_presence]),
+        ),
+        migrations.AlterField(
+            model_name='car',
+            name='year',
+            field=models.CharField(max_length=200, validators=[cars_and_brands.models.validate_car_year_presence]),
+        ),
+    ]

car_app/cars_and_brands/models.py

@@ -1,3 +1,38 @@
 from django.db import models
+from django.core.exceptions import ValidationError
+from django.utils.translation import gettext_lazy as text
 
 # Create your models here.
+def validate_brand_name_presence(name):
+    if len(name) == 0:
+        raise ValidationError(text(
+            'This field cannot be blank.'
+        ))
+
+def validate_car_name_presence(name):
+    if len(name) == 0:
+        raise ValidationError(text(
+            'This field cannot be blank.'
+        ))
+
+def validate_car_year_presence(year):
+    if len(year) == 0:
+        raise ValidationError(text(
+            'This field cannot be blank.'
+        ))
+
+
+class Brand(models.Model):
+    name = models.CharField(max_length=200, validators=[validate_brand_name_presence])
+
+    def __str__(self) -> str:
+        return f"ID: {self.id} Name: {self.name}"
+
+class Car(models.Model):
+    brand = models.ForeignKey(Brand, on_delete=models.CASCADE, related_name='cars')
+
+    name = models.CharField(max_length=200, validators=[validate_car_name_presence])
+    year = models.CharField(max_length=200, validators=[validate_car_year_presence])
+
+    def __str__(self) -> str:
+        return f"ID: {self.id} Name: {self.name} Year: {self.year}"

car_app/cars_and_brands/static/styles.css

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+body {
+  background-color: lightblue;
+}

car_app/cars_and_brands/templates/brand/brand_detail.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
+<link rel="stylesheet" href="../../static/styles.css" >
+  <title>Document</title>
+</head>
+<body>
+  <div class="d-flex justify-content-center align-items-center flex-column">
+    <h2>{{ brand.name }}</h2>
+    <div>
+      <a href="{% url 'cars_list' brand_id=brand.id %}">Cars made by this Brand</a>
+    </div>
+    <br>
+    <a href="{% url 'edit_brand' brand_id=brand.id %}"> Edit brand</a>
+    <form name="delete_brand" method="POST" action="{% url 'delete_brand' brand_id=brand.id %}">
+      {% csrf_token %}
+      <input type="submit" value="Delete brand" />
+    </form>
+
+  </div>
+
+
+</body>
+</html>

car_app/cars_and_brands/templates/brand/brand_form.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
+<link rel="stylesheet" href="../../static/styles.css" >
+  <title>Document</title>
+</head>
+<body>
+  <div class="d-flex justify-content-center align-items-center flex-column">
+  <h2>{{ type_of_request }} Brand</h2>
+  <form method="POST">{% csrf_token %}
+    {{ form.as_p }}
+    <button type="submit">Save</button>
+  </form>
+  </div>  
+</body>
+</html>

car_app/cars_and_brands/templates/brand/brands_list.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+<!-- CSS only -->
+<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
+<link rel="stylesheet" href="../../static/styles.css" >
+  <title>Document</title>
+</head>
+<body>
+  <div class="container">
+    <div class="d-flex justify-content-center">
+      <h1>Brands</h1>
+    </div>
+    <div class="d-flex align-items-center flex-column">
+      <ul class="list-group w-20 ">
+       {% for brand in all_brands %}
+          <li class="list-group-item  list-group-item-light text-center"><a href="{% url 'brand_detail' brand_id=brand.id %}"">{{brand.name}}</a></li>
+        {% endfor %}
+      </ul>
+      <a class="text-decoration-none" href="{% url 'new_brand' %}"> Add a new brand </a>
+    <div>
+  </div>
+
+
+</body>
+</html>

car_app/cars_and_brands/templates/cars/car_detail.html

@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
+  <link rel="stylesheet" href="../../../static/styles.css" >
+  <title>Document</title>
+</head>
+<body>
+  <div class="d-flex justify-content-center align-items-center flex-column">
+    <h2>{{car.name}}</h2>
+    <p>Brand: {{brand.name}}</p>
+    <p>Year: {{car.year}}</p>
+
+    <a href="{% url 'edit_car' brand_id=brand.id car_id=car.id%}"> Edit Car</a>
+    <br>
+    <br>
+    <form name="delete_brand" method="POST" action="{% url 'delete_car' brand_id=brand.id car_id=car.id %}">
+      {% csrf_token %}
+      <input type="submit" value="Delete car" />
+    </form>
+  </div>
+</body>
+</html>

car_app/cars_and_brands/templates/cars/car_form.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
+<link rel="stylesheet" href="../../../static/styles.css" >
+  <title>Document</title>
+</head>
+<body>
+  </html>
+<h2>{{ type_of_request }} Car</h2>
+<form method="POST">{% csrf_token %}
+  {{ form.as_p }}
+  <button type="submit">Save</button>
+</form>
+
+</body>

car_app/cars_and_brands/templates/cars/cars_list.html

@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
+<link rel="stylesheet" href="../../static/styles.css" >
+  <title>Document</title>
+</head>
+<body>
+  <div class="d-flex justify-content-center align-items-center flex-column">
+    <h1> All Cars made by {{ brand.name }} </h1>
+    <ul class="list-group w-20">
+      {% for car in cars %}
+        <div>
+          <li class="list-group-item"><a href="{% url 'car_detail' brand_id=brand.id car_id=car.id %}">{{ car.name }}</a></li>
+        </div>
+      {% endfor %}
+    </ul>
+
+    <a href="{% url 'new_car' brand_id=brand.id %}">Add a new car</a>
+  </div>
+</body>
+</html>

car_app/cars_and_brands/tests.py

@@ -1,3 +1,40 @@
+from django.core import exceptions
 from django.test import TestCase
+from .models import *
+
 
 # Create your tests here.
+class AssociationTestCase(TestCase):
+    def setUp(self):
+        self.brand = Brand.objects.create()
+        self.car = Car.objects.create(brand=self.brand)
+
+    def test01_brand_of_car(self):
+        "returns the brand of the car"
+        self.assertEqual(self.car.brand, self.brand)
+
+    def test02_brand_cars(self):
+        self.assertEqual(list(self.brand.cars.all()), [self.car])
+
+class ValidationsTestCase(TestCase):
+
+    brand = Brand()
+    car = Car()
+
+    def test01_validate_brand_name(self):
+        try:
+            self.brand.full_clean()
+        except ValidationError as e:
+            self.assertTrue('This field cannot be blank.' in e.message_dict['name'])
+
+    def test02_validate_car_name(self):
+        try:
+            self.car.full_clean()
+        except ValidationError as e:
+            self.assertTrue('This field cannot be blank.' in e.message_dict['name'])
+
+    def test03_validate_car_year(self):
+        try:
+            self.car.full_clean()
+        except ValidationError as e:
+            self.assertTrue('This field cannot be blank.' in e.message_dict['year'])

car_app/cars_and_brands/urls.py

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+from django.urls import path
+from . import views
+
+
+
+urlpatterns = [
+    path('', views.brands_list, name='brands_list'),
+    path('new', views.new_brand, name='new_brand'),
+    path('<int:brand_id>', views.brand_detail, name='brand_detail'),
+    path('<int:brand_id>/edit', views.edit_brand, name='edit_brand'),
+    path('<int:brand_id>/delete', views.delete_brand, name='delete_brand'),
+
+    path('<int:brand_id>/cars', views.cars_list, name='cars_list'),
+    path('<int:brand_id>/cars/new', views.new_car, name='new_car'),
+    path('<int:brand_id>/cars/<int:car_id>', views.car_detail, name='car_detail'),
+    path('<int:brand_id>/cars/<int:car_id>/edit', views.edit_car, name='edit_car'),
+    path('<int:brand_id>/cars/<int:car_id>/delete', views.delete_car, name='delete_car'),
+]