initial commit, up to part 4/5

mysite/manage.py

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+#!/usr/bin/env python
+import os
+import sys
+
+if __name__ == "__main__":
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.settings")
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError:
+        # The above import may fail for some other reason. Ensure that the
+        # issue is really that Django is missing to avoid masking other
+        # exceptions on Python 2.
+        try:
+            import django
+        except ImportError:
+            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?"
+            )
+        raise
+    execute_from_command_line(sys.argv)

mysite/mysite/settings.py

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+"""
+Django settings for mysite project.
+
+Generated by 'django-admin startproject' using Django 1.11.29.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/1.11/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/1.11/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/1.11/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = 'm2h0wcn#80^c9*(+62i--zwft1c_4h0+8q#yte&9vu7s6l67!('
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = []
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    'polls.apps.PollsConfig',
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+]
+
+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 = 'mysite.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 = 'mysite.wsgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/1.11/ref/settings/#databases
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/1.11/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/1.11/topics/i18n/
+
+LANGUAGE_CODE = 'en-us'
+
+TIME_ZONE = 'UTC'
+
+USE_I18N = True
+
+USE_L10N = True
+
+USE_TZ = True
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/1.11/howto/static-files/
+
+STATIC_URL = '/static/'

mysite/mysite/urls.py

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+"""mysite URL Configuration
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/1.11/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.conf.urls import url, include
+    2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
+"""
+from django.conf.urls import url, include
+from django.contrib import admin
+
+urlpatterns = [
+    url(r'^polls/', include('polls.urls')),
+    url(r'^admin/', admin.site.urls),
+]

mysite/mysite/wsgi.py

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+"""
+WSGI config for mysite 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/1.11/howto/deployment/wsgi/
+"""
+
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.settings")
+
+application = get_wsgi_application()

mysite/polls/admin.py

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+from django.contrib import admin
+from .models import Question
+# Register your models here.
+admin.site.register(Question)

mysite/polls/apps.py

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+from django.apps import AppConfig
+
+
+class PollsConfig(AppConfig):
+    name = 'polls'

mysite/polls/migrations/0001_initial.py

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+# Generated by Django 3.0.7 on 2020-06-22 14:12
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Question',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('question_text', models.CharField(max_length=200)),
+                ('pub_date', models.DateTimeField(verbose_name='date published')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Choice',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('choice_text', models.CharField(max_length=200)),
+                ('votes', models.IntegerField(default=0)),
+                ('question', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='polls.Question')),
+            ],
+        ),
+    ]

mysite/polls/models.py

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+from django.db import models
+import datetime
+from django.utils import timezone
+
+# Create your models here.
+class Question(models.Model):
+    question_text = models.CharField(max_length=200)
+    pub_date = models.DateTimeField('date published')
+
+    def __str__(self):
+        return self.question_text
+    def wasRecent(self):
+        return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
+
+class Choice(models.Model):
+    question = models.ForeignKey(Question, on_delete=models.CASCADE)
+    choice_text = models.CharField(max_length=200)
+    votes = models.IntegerField(default=0)
+
+    def __str__(self):
+        return self.choice_text
+
+
+

mysite/polls/templates/polls/detail.html

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+<h1>{{ question }}</h1>
+
+{% if error_message %}<p><strong>{{ error_message }}</strong></p> {% endif %}
+
+<form action="{% url 'polls:vote' question.id %}" method="post">
+	{% csrf_token %}
+	{% for choice in question.choice_set.all %}
+		<input type="radio" name="choice" id="choice {{ forloop.counter }}" value="{{ choice.id }}">
+		<label for="choice{{ forloop.counter }}">{{ choice.choice_text }}</label>
+	<br>
+	{% endfor %}
+	<input type="submit" value="Vote">
+</form>

mysite/polls/templates/polls/index.html

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+{% if question_list %}
+	<ul>
+	{% for question in question_list %}
+	<li><a href="{% url 'detail' question.id %}">{{ question.question_text }}</a></li>
+	{% endfor %}
+	</ul>
+{% else %}
+	<p> No Polls available. </p>
+{% endif %}

mysite/polls/templates/polls/result.html

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+<h1>{{ question }}</h1>
+
+<ul>
+{% for choice in question.choice_set.all %}
+	<li>{{ choice.choice_text }} -- {{ choice.votes }} vote{{choice.votes|pluralize}}</li>
+{% endfor %}
+</ul>
+
+<a href="{% url 'polls:detail' question.id %}">Vote again?</a>

mysite/polls/tests.py

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

mysite/polls/urls.py

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+from django.urls import path
+
+from . import views
+
+app_name = 'polls'
+urlpatterns = [
+	path('', views.index, name='index'),
+        path('<int:question_id>/', views.detail, name='detail'),
+        path('<int:question_id>/results/', views.result, name='result'),
+        path('<int:question_id>/vote/', views.vote, name='vote')
+]

mysite/polls/views.py

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+from django.shortcuts import render, get_object_or_404
+from django.http import HttpResponse, Http404, HttpResponseRedirect
+from django.template import loader
+from django.urls import reverse
+from .models import Question
+
+# Create your views here.
+def index(request):
+    question_list = Question.objects.order_by('-pub_date')[:5]
+    context = { 'question_list': question_list }
+    return render(request, 'polls/index.html', context)
+
+def detail(request, question_id):
+    question = get_object_or_404(Question, pk=question_id)
+    return render(request, 'polls/detail.html', {'question': question})
+
+def result(request, question_id):
+    question = get_object_or_404(Question, pk=question_id)
+    return render(request, 'polls/result.html', {'question': question})
+
+def vote(request, question_id):
+    question = get_object_or_404(Question, pk=question_id)
+    try:
+        selected_choice = question.choice_set.get(pk=request.POST['choice'])
+    except(KeyError, choice.DoesNotExist):
+        return render(request, 'polls/detail.html', {"question": question, "error_message": "You didn't select a choice",})
+    else:
+        selected_choice.votes += 1
+        selected_choice.save()
+        return HttpResponseRedirect(reverse('polls:result', args=(question.id, )))
+