Learning Circle : django #3 - #6 - Tutorial03 - 06

youngjin.han/django/django.org

@@ -1,3 +1,15 @@
+* 2020-07-13
+** note
+    - none
+* 2020-07-10
+** note
+    - none
+* 2020-07-08
+** note
+    - none
+* 2020-07-06
+** note
+    - none
 * 2020-07-04
 ** note
     - none

youngjin.han/django/mysite/mysite/settings.py

@@ -27,6 +27,9 @@ DEBUG = True
 
 ALLOWED_HOSTS = [
         "[2a0a:e5c1:120::35]",
+        "192.168.0.20",
+        "127.0.0.1",
+        "2a0a-e5c1-0120-0000-0000-0000-0000-0035.has-a.name",
 ]
 
 
@@ -108,7 +111,8 @@ AUTH_PASSWORD_VALIDATORS = [
 
 LANGUAGE_CODE = 'en-us'
 
-TIME_ZONE = 'UTC'
+#TIME_ZONE = 'UTC'
+TIME_ZONE = 'Asia/Seoul'
 
 USE_I18N = True
 

youngjin.han/django/mysite/polls/admin.py

@@ -4,3 +4,6 @@ from __future__ import unicode_literals
 from django.contrib import admin
 
 # Register your models here.
+from .models import Question
+
+admin.site.register(Question)

youngjin.han/django/mysite/polls/models.py

@@ -16,7 +16,9 @@ class Question(models.Model):
     def __str__(self):
         return self.question_text
     def was_published_recently(self):
-        return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
+#        return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
+        now = timezone.now()
+        return now - datetime.timedelta(days=1) <= self.pub_date <= now
 
 class Choice(models.Model):
     question = models.ForeignKey(Question, on_delete=models.CASCADE)

youngjin.han/django/mysite/polls/static/polls/style.css

@@ -0,0 +1,7 @@
+li a {
+    color: green;
+}
+
+body {
+    background: white url("images/background.jpg") no-repeat;
+}

youngjin.han/django/mysite/polls/templates/polls/detail.html

@@ -0,0 +1,12 @@
+<h1>{{ question.question_text }}</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>

youngjin.han/django/mysite/polls/templates/polls/index.html

@@ -0,0 +1,13 @@
+{% load static %}
+
+<link rel="stylesheet" type="text/css" href="{% static 'polls/style.css' %}">
+
+{% if latest_question_list %}
+    <ul>
+    {% for question in latest_question_list %}
+        <li><a href="{% url 'polls:detail' question.id %}">{{ question.question_text }}</a></li>
+    {% endfor %}
+    </ul>
+{% else %}
+    <p>No polls are available.</p>
+{% endif %}

youngjin.han/django/mysite/polls/templates/polls/results.html

@@ -0,0 +1,9 @@
+<h1>{{ question.question_text }}</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>

youngjin.han/django/mysite/polls/tests.py

@@ -4,3 +4,131 @@ from __future__ import unicode_literals
 from django.test import TestCase
 
 # Create your tests here.
+import datetime
+
+from django.test import TestCase
+from django.utils import timezone
+from django.urls import reverse
+
+from .models import Question
+
+
+class QuestionModelTests(TestCase):
+
+    def test_was_published_recently_with_future_question(self):
+        """
+        was_published_recently() returns False for questions whose pub_date
+        is in the future.
+        """
+        time = timezone.now() + datetime.timedelta(days=30)
+        future_question = Question(pub_date=time)
+        self.assertIs(future_question.was_published_recently(), False)
+
+
+    def test_was_published_recently_with_old_question(self):
+        """
+        was_published_recently() returns False for questions whose pub_date
+        is older than 1 day.
+        """
+        time = timezone.now() - datetime.timedelta(days=1, seconds=1)
+        old_question = Question(pub_date=time)
+        self.assertIs(old_question.was_published_recently(), False)
+
+    def test_was_published_recently_with_recent_question(self):
+        """
+        was_published_recently() returns True for questions whose pub_date
+        is within the last day.
+        """
+        time = timezone.now() - datetime.timedelta(hours=23, minutes=59, seconds=59)
+        recent_question = Question(pub_date=time)
+        self.assertIs(recent_question.was_published_recently(), True)
+
+
+def create_question(question_text, days):
+    """
+    Create a question with the given `question_text` and published the
+    given number of `days` offset to now (negative for questions published
+    in the past, positive for questions that have yet to be published).
+    """
+    time = timezone.now() + datetime.timedelta(days=days)
+    return Question.objects.create(question_text=question_text, pub_date=time)
+
+
+class QuestionIndexViewTests(TestCase):
+    def test_no_questions(self):
+        """
+        If no questions exist, an appropriate message is displayed.
+        """
+        response = self.client.get(reverse('polls:index'))
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "No polls are available.")
+        self.assertQuerysetEqual(response.context['latest_question_list'], [])
+
+    def test_past_question(self):
+        """
+        Questions with a pub_date in the past are displayed on the
+        index page.
+        """
+        create_question(question_text="Past question.", days=-30)
+        response = self.client.get(reverse('polls:index'))
+        self.assertQuerysetEqual(
+            response.context['latest_question_list'],
+            ['<Question: Past question.>']
+        )
+
+    def test_future_question(self):
+        """
+        Questions with a pub_date in the future aren't displayed on
+        the index page.
+        """
+        create_question(question_text="Future question.", days=30)
+        response = self.client.get(reverse('polls:index'))
+        self.assertContains(response, "No polls are available.")
+        self.assertQuerysetEqual(response.context['latest_question_list'], [])
+
+    def test_future_question_and_past_question(self):
+        """
+        Even if both past and future questions exist, only past questions
+        are displayed.
+                                                                                                                                                                                                             """
+        create_question(question_text="Past question.", days=-30)
+        create_question(question_text="Future question.", days=30)
+        response = self.client.get(reverse('polls:index'))
+        self.assertQuerysetEqual(
+            response.context['latest_question_list'],
+            ['<Question: Past question.>']
+        )
+
+    def test_two_past_questions(self):
+        """
+        The questions index page may display multiple questions.
+        """
+        create_question(question_text="Past question 1.", days=-30)
+        create_question(question_text="Past question 2.", days=-5)
+        response = self.client.get(reverse('polls:index'))
+        self.assertQuerysetEqual(
+            response.context['latest_question_list'],
+            ['<Question: Past question 2.>', '<Question: Past question 1.>']
+        )
+
+
+class QuestionDetailViewTests(TestCase):
+    def test_future_question(self):
+        """
+        The detail view of a question with a pub_date in the future
+        returns a 404 not found.
+        """
+        future_question = create_question(question_text='Future question.', days=5)
+        url = reverse('polls:detail', args=(future_question.id,))
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 404)
+
+    def test_past_question(self):
+        """
+        The detail view of a question with a pub_date in the past
+        displays the question's text.
+        """
+        past_question = create_question(question_text='Past Question.', days=-5)
+        url = reverse('polls:detail', args=(past_question.id,))
+        response = self.client.get(url)
+        self.assertContains(response, past_question.question_text)

youngjin.han/django/mysite/polls/urls.py

@@ -2,6 +2,18 @@ from django.urls import path
 
 from . import views
 
+app_name = 'polls'
 urlpatterns = [
-            path('', views.index, name='index'),
+    # ex: /polls/
+    #path('', views.index, name='index'),
+    path('', views.IndexView.as_view(), name='index'),
+    # ex: /polls/5/
+    #path('<int:question_id>/', views.detail, name='detail'),
+    path('<int:pk>/', views.DetailView.as_view(), name='detail'),
+    # ex: /polls/5/results/
+    #path('<int:question_id>/results/', views.results, name='results'),
+    path('<int:pk>/results/', views.ResultsView.as_view(), name='results'),
+    # ex: /polls/5/vote/
+    #path('<int:question_id>/vote/', views.vote, name='vote'),
+    path('<int:question_id>/vote/', views.vote, name='vote'),
 ]

youngjin.han/django/mysite/polls/views.py

@@ -4,8 +4,108 @@ from __future__ import unicode_literals
 from django.shortcuts import render
 
 # Create your views here.
-from django.http import HttpResponse
+from django.http import HttpResponse, HttpResponseRedirect
+from django.template import loader
+from django.http import Http404
+from django.shortcuts import get_object_or_404, render
+from django.urls import reverse
+from django.views import generic
+from django.utils import timezone
+
+from .models import Choice, Question
 
 
-def index(request):
-        return HttpResponse("Hello, world. You're at the polls index.")
+#def index(request):
+#        return HttpResponse("Hello, world. You're at the polls index.")
+
+#def index(request):
+#    latest_question_list = Question.objects.order_by('-pub_date')[:5]
+#    output = ', '.join([q.question_text for q in latest_question_list])
+#    return HttpResponse(output)
+
+#def index(request):
+#    latest_question_list = Question.objects.order_by('-pub_date')[:5]
+#    template = loader.get_template('polls/index.html')
+#    context = {
+#        'latest_question_list': latest_question_list,
+#    }
+#    return HttpResponse(template.render(context, request))
+
+#def index(request):
+#    latest_question_list = Question.objects.order_by('-pub_date')[:5]
+#    context = {'latest_question_list': latest_question_list}
+#    return render(request, 'polls/index.html', context)
+
+class IndexView(generic.ListView):
+    template_name = 'polls/index.html'
+    context_object_name = 'latest_question_list'
+
+#    def get_queryset(self):
+#        """Return the last five published questions."""
+#        return Question.objects.order_by('-pub_date')[:5]
+
+    def get_queryset(self):
+        """
+        Return the last five published questions (not including those set to be
+        published in the future).
+        """
+        return Question.objects.filter(
+            pub_date__lte=timezone.now()
+        ).order_by('-pub_date')[:5]
+
+#def detail(request, question_id):
+#        return HttpResponse("You're looking at question %s." % question_id)
+
+#def detail(request, question_id):
+#    try:
+#        question = Question.objects.get(pk=question_id)
+#    except Question.DoesNotExist:
+#        raise Http404("Question does not exist")
+#    return render(request, 'polls/detail.html', {'question': question})
+
+#def detail(request, question_id):
+#        question = get_object_or_404(Question, pk=question_id)
+#        return render(request, 'polls/detail.html', {'question': question})
+
+class DetailView(generic.DetailView):
+    model = Question
+    template_name = 'polls/detail.html'
+
+    def get_queryset(self):
+        """
+        Excludes any questions that aren't published yet.
+        """
+        return Question.objects.filter(pub_date__lte=timezone.now())
+
+#def results(request, question_id):
+#        response = "You're looking at the results of question %s."
+#        return HttpResponse(response % question_id)
+
+#def results(request, question_id):
+#    question = get_object_or_404(Question, pk=question_id)
+#    return render(request, 'polls/results.html', {'question': question})
+
+class ResultsView(generic.DetailView):
+    model = Question
+    template_name = 'polls/results.html'
+
+#def vote(request, question_id):
+#        return HttpResponse("You're voting on question %s." % question_id)
+
+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):
+        # Redisplay the question voting form.
+        return render(request, 'polls/detail.html', {
+            'question': question,
+            'error_message': "You didn't select a choice.",
+        })
+    else:
+        selected_choice.votes += 1
+        selected_choice.save()
+        # Always return an HttpResponseRedirect after successfully dealing
+        # with POST data. This prevents data from being posted twice if a
+        # user hits the Back button.
+        return HttpResponseRedirect(reverse('polls:results', args=(question.id,)))

youngjin.han/learning-node02-2020.org

@@ -1,3 +1,88 @@
+* 2020-07-15
+*** Django #7: Tutorial 6
+**** Lecture content
+     - Environment like in Django 1 and Django 3
+       - Ensure your nginx is working
+       - Paste the URL of your Django server into the chat
+       - Ensure you can reach the other Django servers
+     - Follow steps on https://docs.djangoproject.com/en/3.0/intro/tutorial06/
+*** Django #8: Tutorial 7
+**** Lecture content
+     - Environment like in Django 1 and Django 3
+       - Ensure your nginx is working
+       - Paste the URL of your Django server into the chat
+       - Ensure you can reach the other Django servers
+     - Follow steps on https://docs.djangoproject.com/en/3.0/intro/tutorial07/
+* 2020-07-13
+*** Django #6: Tutorial 5
+**** DONE Lecture content
+     CLOSED: [2020-07-14 화 00:25]
+     - Environment like in Django 1 and Django 3
+       - Ensure your nginx is working
+     - Follow steps on https://docs.djangoproject.com/en/3.0/intro/tutorial05/
+
+* 2020-07-10
+*** Django #5: Tutorial 4
+**** DONE Lecture content
+     CLOSED: [2020-07-14 화 00:19]
+     - Environment like in Django 1 and Django 3
+       - Ensure your nginx is working
+     - Follow steps on https://docs.djangoproject.com/en/3.0/intro/tutorial04/
+
+* 2020-07-08
+*** Django #4: Tutorial 3
+**** DONE Lecture content
+     CLOSED: [2020-07-14 화 00:18]
+     - Environment like in Django 1 and Django 3
+       - Ensure your nginx is working
+     - Follow steps on https://docs.djangoproject.com/en/3.0/intro/tutorial03/
+* 2020-07-06
+*** Django #3: using http and https
+**** DONE Lecture content
+     CLOSED: [2020-07-14 화 00:17]
+     - We want expose our Django app via https to the world
+     - We want to allow IPv6 world wide access
+     - Steps IPv6
+       - Ensure you have IPv6 connectivity
+       - Get a VPN from IPv6VPN.ch if you don't have IPv6
+       - Ensure that your firewall allows access to ports 80 and 443
+         to your machine
+       - Coordinate with another participant to test your connection
+         - The square brackets are needed in the following examples
+         - curl -vv http://[your ipv6 address]
+         - curl -vv https://[your ipv6 address]
+         - Both examples should return "connection refused"
+     - Find out your Domain name
+       - We will install an letsencrypt certificate
+       - Certificates need a name
+       - The website https://has-a.name provides you with a name
+       - Find out your name
+       - Have somebody else ping your name
+     - Steps webserver
+       - Install nginx
+       - Have somebody else run curl -v http://<your name>.has-a.name
+       - Install certbot
+       - Use certbot to request a certificate for your name
+       - Use the nginx plugin of certbot
+       - Have somebody else run curl -v https://<your name>.has-a.name
+         (with httpS!)
+     - Proxy configuration
+       - We want nginx to forward the HTTPS requests to django
+       - We run django on the IPv6 localhost
+         - python manage.py runserver '[::1]:8000'
+         - Note: this is different from last session!
+       - We configure nginx to proxy to django
+         - Locate the configuration file for the https server (usually
+           somewhere below /etc/nginx)
+         - Add a proxy configuration to it
+         - The proxy block looks similar to this:
+           location / {
+             proxy_pass       http://localhost:8000;
+             proxy_set_header Host      $host;
+             proxy_set_header X-Real-IP $remote_addr;
+           }
+       - Test with the other participants to reach you!
+     - Add your nginx configuration
 * 2020-07-04
 *** Django #2: Tutorial 2
 **** DONE Lecture content