Implement rating

musicrate/settings.py

@@ -147,3 +147,16 @@ SHEET_TO_MODEL = {
 }
 
 YOUTUBE_RE = r'(?:|(?:|(?:http(?:|s):))//)(?:youtu\.be/|(?:|(?:m|www)\.)youtube\.com/watch\?v=)([-0-9A-Z_a-z]{11})'
+
+RATING_CHOICES = (
+    ('10', 'sehr gut'),
+    ( '9', 'ziemlich gut'),
+    ( '8', 'gut'),
+    ( '7', 'eher gut'),
+    ( '6', 'ok'),
+    ( '5', 'naja'),
+    ( '4', 'eher schlecht'),
+    ( '3', 'schlecht'),
+    ( '2', 'ziemlich schlecht'),
+    ( '1', 'sehr schlecht'),
+)

musicrate/vote/forms.py

@@ -1,2 +1,5 @@
 from django import forms
+from django.conf import settings
 
+class RateArtistForm(forms.Form):
+    rating = forms.ChoiceField(choices=settings.RATING_CHOICES, required=False, widget=forms.RadioSelect)

musicrate/vote/migrations/0001_initial.py

@@ -0,0 +1,89 @@
+# Generated by Django 4.1.4 on 2022-12-20 21:28
+
+from django.db import migrations, models
+import django.db.models.deletion
+import musicrate.vote.models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ("core", "0004_alter_artist_link_1_alter_artist_link_2"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="Participant",
+            fields=[
+                (
+                    "token",
+                    models.CharField(
+                        default=musicrate.vote.models.participant_token,
+                        max_length=43,
+                        primary_key=True,
+                        serialize=False,
+                    ),
+                ),
+                (
+                    "session",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE, to="core.session"
+                    ),
+                ),
+            ],
+        ),
+        migrations.CreateModel(
+            name="Rating",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                (
+                    "value",
+                    models.CharField(
+                        blank=True,
+                        choices=[
+                            ("1", "sehr schlecht"),
+                            ("2", "ziemlich schlecht"),
+                            ("3", "schlecht"),
+                            ("4", "eher schlecht"),
+                            ("5", "naja"),
+                            ("6", "ok"),
+                            ("7", "eher gut"),
+                            ("8", "gut"),
+                            ("9", "ziemlich gut"),
+                            ("10", "sehr gut"),
+                        ],
+                        max_length=2,
+                    ),
+                ),
+                (
+                    "artist",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE, to="core.artist"
+                    ),
+                ),
+                (
+                    "participant",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to="vote.participant",
+                    ),
+                ),
+            ],
+        ),
+        migrations.AddConstraint(
+            model_name="rating",
+            constraint=models.UniqueConstraint(
+                fields=("artist", "participant"), name="unique_rating"
+            ),
+        ),
+    ]

musicrate/vote/models.py

@@ -1,3 +1,24 @@
+from django.conf import settings
 from django.db import models
+from secrets import token_urlsafe
+
+from ..core.models import Artist, Session
 
 # Create your models here.
+
+def participant_token():
+    return token_urlsafe(32)
+
+class Participant(models.Model):
+    token = models.CharField(max_length=43, default=participant_token, primary_key=True)
+    session = models.ForeignKey(Session, on_delete=models.CASCADE)
+
+class Rating(models.Model):
+    class Meta:
+        constraints = [
+            models.UniqueConstraint(fields=['artist', 'participant'], name='unique_rating'),
+        ]
+
+    value = models.CharField(max_length=2, blank=True, choices=settings.RATING_CHOICES)
+    artist = models.ForeignKey(Artist, on_delete=models.CASCADE)
+    participant = models.ForeignKey(Participant, on_delete=models.CASCADE)

musicrate/vote/templates/vote/artist.html

@@ -7,28 +7,14 @@
 <p>{{ artist.genre }} &middot; {{ artist.origin }}<br>{{ artist.comment }}</p>
 
 <form action="" method="post">
+	{% csrf_token %}
+
 	<div class="rating-container">
-		<div class="rating" style="--num-choices: 10">
+		<div class="rating" style="--num-choices: {{ form.rating | length }}">
-			<input id="rating10" name="rating" type="radio" value="10">
+{% for radio in form.rating %}
-			<label class="rating-point" for="rating10"></label>
+			{{ radio.tag }}
-			<input id="rating09" name="rating" type="radio" value="9">
+			<label class="rating-point" for="{{ radio.id_for_label }}"></label>
-			<label class="rating-point" for="rating09"></label>
+{% endfor %}
-			<input id="rating08" name="rating" type="radio" value="8">
-			<label class="rating-point" for="rating08"></label>
-			<input id="rating07" name="rating" type="radio" value="7">
-			<label class="rating-point" for="rating07"></label>
-			<input id="rating06" name="rating" type="radio" value="6">
-			<label class="rating-point" for="rating06"></label>
-			<input id="rating05" name="rating" type="radio" value="5">
-			<label class="rating-point" for="rating05"></label>
-			<input id="rating04" name="rating" type="radio" value="4">
-			<label class="rating-point" for="rating04"></label>
-			<input id="rating03" name="rating" type="radio" value="3">
-			<label class="rating-point" for="rating03"></label>
-			<input id="rating02" name="rating" type="radio" value="2">
-			<label class="rating-point" for="rating02"></label>
-			<input id="rating01" name="rating" type="radio" value="1">
-			<label class="rating-point" for="rating01"></label>
 		</div>
 		<div class="legend">
 			<span>sehr schlecht</span>
@@ -36,22 +22,53 @@
 			<span>sehr gut</span>
 		</div>
 		<div class="buttons">
-			<button type="reset">Zurücksetzen</button>
+			<button id="reset_rating" type="reset">Zurücksetzen</button>
+			<button id="submit_rating" type="submit">Speichern</button>
 		</div>
 	</div>
 </form>
 
 <div class="pagination">
 {% if offset > 0 %}
-	<a href="{% url 'artist' playlist offset|add:-1 %}">&lt; Zurück</a>
+	<a href="{% url 'artist' playlist.pk offset|add:-1 %}">&lt; Zurück</a>
 {% else %}
 	<a></a>
 {% endif %}
 	{{ offset|add:1 }}/{{ count }}
-{% if offset < count|add:-1 %}
+{% if offset < count|add:-1 and has_rating %}
-	<a href="{% url 'artist' playlist offset|add:1 %}">Weiter &gt;</a>
+	<a href="{% url 'artist' playlist.pk offset|add:1 %}">Weiter &gt;</a>
 {% else %}
 	<a></a>
 {% endif %}
 </div>
+
+<script>
+const options = document.querySelectorAll('input[name=rating]');
+const submitRating = document.getElementById('submit_rating');
+
+let empty = true;
+options.forEach(option => {
+	empty &&= !option.checked;
+});
+
+if (empty) {
+	submitRating.innerText = 'Enthalten';
+
+	options.forEach(option => {
+		option.addEventListener('change', () => {
+			submitRating.innerText = 'Speichern';
+		});
+	});
+}
+
+document.getElementById('reset_rating').addEventListener('click', () => {
+	options.forEach(option => {
+		if (option.attributes.getNamedItem('checked') !== null) {
+			option.attributes.removeNamedItem('checked');
+		}
+	});
+
+	submitRating.innerText = 'Enthalten';
+});
+</script>
 {% endblock %}

musicrate/vote/views.py

@@ -1,5 +1,7 @@
 from django.shortcuts import get_object_or_404, redirect, render
 
+from .forms import RateArtistForm
+from .models import Participant, Rating
 from ..core.models import Session
 
 # Create your views here.
@@ -7,20 +9,53 @@ from ..core.models import Session
 def join_session(request, session):
     session = get_object_or_404(Session, pk=session)
 
+    if 'token' in request.session:
+        try:
+            participant = Participant.objects.get(pk=request.session['token'])
+            return redirect('current_artist', session.pk)
+        except Participant.DoesNotExist:
+            del request.session['token']
+
     if request.method == 'POST':
-        request.session['session'] = session.token
+        participant = Participant(session=session)
+        participant.save()
+
+        request.session['token'] = participant.pk
         return redirect('current_artist', session.playlist.pk)
 
     return render(request, 'vote/join_session.html', {})
 
 def artist(request, playlist, offset=None):
-    session = get_object_or_404(Session, pk=request.session.get('session'))
+    participant = get_object_or_404(Participant, pk=request.session.get('token'))
+
+    session_offset = participant.session.offset
+    offset = offset if offset != None else session_offset
+    if offset > session_offset:
+        return redirect('artist', playlist, session_offset)
 
-    offset = offset if offset != None else session.offset
+    playlist = participant.session.playlist
-    if offset > session.offset:
-        return redirect('artist', playlist, session.offset)
 
-    artists = session.playlist.artist_set
+    artists = playlist.artist_set
     artist = artists.order_by('id')[offset]
 
-    return render(request, 'vote/artist.html', {'artist': artist, 'count': artists.count(), 'offset': offset, 'playlist': session.playlist.pk})
+    rating = None
+    if Rating.objects.filter(artist=artist, participant=participant).exists():
+        rating = Rating.objects.get(artist=artist, participant=participant)
+
+    form = RateArtistForm()
+
+    if request.method == 'POST':
+        form = RateArtistForm(request.POST)
+        if not form.is_valid():
+            return redirect('artist', playlist, session_offset)
+
+        if not rating:
+            rating = Rating(artist=artist, participant=participant)
+
+        rating.value = form.cleaned_data['rating']
+        rating.save()
+    elif rating and rating.value:
+        form = RateArtistForm({'rating': rating.value})
+
+    has_rating = rating != None
+    return render(request, 'vote/artist.html', {'artist': artist, 'count': artists.count(), 'form': form, 'has_rating': has_rating, 'offset': offset, 'playlist': playlist})