Avances hasta parte 4

Django/mysite/polls/templates/polls/detail.html

@@ -1,6 +1,12 @@
-<h1>{{ question.question_text }}</h1>
-<ul>
-{% for choice in question.choice_set.all %}
-    <li>{{ choice.choice_text }}</li>
-{% endfor %}
-</ul>
+<form action="{% url 'polls:vote' question.id %}" method="post">
+    {% csrf_token %}
+    <fieldset>
+        <legend><h1>{{ question.question_text }}</h1></legend>
+        {% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}
+        {% 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 %}
+    </fieldset>
+    <input type="submit" value="Vote">
+    </form>

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>

Django/mysite/polls/views.py

@@ -1,10 +1,10 @@
 from django.shortcuts import get_object_or_404, render
-from django.http import HttpResponse, Http404
-from django.template import loader
+from django.http import HttpResponse, HttpResponseRedirect
+from django.urls import reverse
+from django.db.models import F
 
 
-
-from .models import Question
+from .models import Choice, Question
 
 # Create your views here.
 
@@ -18,9 +18,27 @@ def detail(request, 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)
-
+    question = get_object_or_404(Question, pk=question_id)
+    return render(request, "polls/results.html", {"question": question})
 
 def vote(request, question_id):
-    return HttpResponse("You're voting on question %s." % 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 = F("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,)))