django tutorial #3 done

pedro/django-tutorial/mysite/mysite/settings.py

@@ -25,7 +25,12 @@ SECRET_KEY = '37jgpv28n1x!f3-48h)4ad99&jz-ek$@e6uf*an5uve6%7atqq'
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = True
 
-ALLOWED_HOSTS = []
+ALLOWED_HOSTS = [
+
+"localhost",
+"2a0a-e5c1-011f-0000-0000-0000-0000-0001.has-a.name"
+
+]
 
 
 # Application definition

pedro/django-tutorial/mysite/polls/templates/polls/detail.html

@@ -0,0 +1,6 @@
+<h1>{{ question.question_text }}</h1>
+<ul>
+{% for choice in question.choice_set.all %}
+    <li>{{ choice.choice_text }}</li>
+{% endfor %}
+</ul>

pedro/django-tutorial/mysite/polls/templates/polls/index.html

@@ -0,0 +1,13 @@
+{% if latest_question_list %}
+  <ul>
+  {% for question in latest_question_list %}
+  {#  <li><a href="/polls/{{ question.id }}/">{{ question.question_text }}</a></li> #}
+  {#  refactor the hardcoded URL #}
+  {#  <li><a href="{% url 'detail' question.id %}">{{ question.question_text }}</a></li> #}
+  {#  use URL namespace #}
+    <li><a href="{% url 'polls:detail' question.id %}">{{ question.question_text }}</a></li>
+  {% endfor %}
+  </ul>
+{% else %}
+  <p>No polls are available.</p>
+{% endif %}

pedro/django-tutorial/mysite/polls/urls.py

@@ -2,6 +2,15 @@ from django.urls import path
 
 from . import views
 
+# namespacing URLs
+app_name = 'polls'
 urlpatterns = [
-    path('', views.index, name='index'),
+  # ex: /polls/
+  path('', views.index, name='index'),
+  # ex: /polls/5/
+  path('<int:question_id>/', views.detail, name='detail'),
+  # ex: /polls/5/results/
+  path('<int:question_id>/results/', views.results, name='results'),
+  # ex: /polls/5/vote/
+  path('<int:question_id>/vote/', views.vote, name='vote'),
 ]

pedro/django-tutorial/mysite/polls/views.py

@@ -1,9 +1,62 @@
-from django.shortcuts import render
+from django.shortcuts import get_object_or_404, render
 
 # Create your views here.
 
 from django.http import HttpResponse
+from django.template import loader
 
+from .models import Question
 
+from django.http import Http404
+
+## simple index
+#def index(request):
+#  return HttpResponse("Hello, world. You're at the polls index.")
+
+## meaningful 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)
+
+## meaningful and templated index
+#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))
+
+## meaningful, templated and easy to write index
+## and then we no longer need to import loader and HttpResponse
 def index(request):
-  return HttpResponse("Hello, world. You're at the polls index.")
+  latest_question_list = Question.objects.order_by('-pub_date')[:5]
+  context = {
+    'latest_question_list': latest_question_list,
+  }
+  return render(request, 'polls/index.html', context)
+
+## simple detail
+#def detail(request, question_id):
+#  return HttpResponse("You're looking at question %s." % question_id)
+
+## meaningful detail
+#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})
+
+## meaningful and easy to write detail
+def detail(request, question_id):
+  question = get_object_or_404(Question, pk=question_id)
+  return render(request, 'polls/detail.html', {'question': question})
+
+def results(request, question_id):
+  response = "You're looking at the results of question %s."
+  return HttpResponse(response % question_id)
+
+def vote(request, question_id):
+  return HttpResponse("You're voting on question %s." % question_id)