From 7d212f0a4801b55a1495e578aa66de9f33c3a072 Mon Sep 17 00:00:00 2001
From: Ivlev Denis <di-erz@yandex.ru>
Date: Sun, 28 Jan 2018 17:51:59 +0300
Subject: [PATCH 1/3] =?UTF-8?q?LIL-99=20=D0=A1=D0=BE=D0=B7=D0=B4=D0=B0?=
 =?UTF-8?q?=D0=BD=D0=B8=D0=B5=20=D0=BC=D0=BE=D0=B4=D0=B5=D0=BB=D0=B8=20"?=
 =?UTF-8?q?=D0=BB=D0=B0=D0=B9=D0=BA=D0=BE=D0=B2"?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../migrations/0004_auto_20180128_1311.py     | 34 +++++++++++++++++++
 apps/course/models.py                         |  8 +++++
 2 files changed, 42 insertions(+)
 create mode 100644 apps/course/migrations/0004_auto_20180128_1311.py

diff --git a/apps/course/migrations/0004_auto_20180128_1311.py b/apps/course/migrations/0004_auto_20180128_1311.py
new file mode 100644
index 00000000..943d6844
--- /dev/null
+++ b/apps/course/migrations/0004_auto_20180128_1311.py
@@ -0,0 +1,34 @@
+# Generated by Django 2.0.1 on 2018-01-28 13:11
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('course', '0003_auto_20180126_1347'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Like',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('update_at', models.DateTimeField(auto_now=True)),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+        migrations.AlterModelOptions(
+            name='course',
+            options={'ordering': ['-created_at'], 'verbose_name': 'Курс', 'verbose_name_plural': 'Курсы'},
+        ),
+        migrations.AddField(
+            model_name='course',
+            name='likes',
+            field=models.ManyToManyField(to='course.Like'),
+        ),
+    ]
diff --git a/apps/course/models.py b/apps/course/models.py
index 1a9f3963..1074bdd7 100644
--- a/apps/course/models.py
+++ b/apps/course/models.py
@@ -8,6 +8,13 @@ from .manager import CategoryQuerySet
 User = get_user_model()
 
 
+class Like(models.Model):
+    user = models.ForeignKey(User, on_delete=models.CASCADE)
+
+    created_at = models.DateTimeField(auto_now_add=True)
+    update_at = models.DateTimeField(auto_now=True)
+
+
 class Course(models.Model):
     STATUS_CHOICES = (
         (0, 'Pending'),
@@ -26,6 +33,7 @@ class Course(models.Model):
     is_featured = models.BooleanField(default=False)
     url = models.URLField('Ссылка', default='')
     status = models.PositiveSmallIntegerField('Статус', default=0, choices=STATUS_CHOICES)
+    likes = models.ManyToManyField(Like)
 
     created_at = models.DateTimeField(auto_now_add=True)
     update_at = models.DateTimeField(auto_now=True)

From 54544fb9ef5a1224c6f9401431639076e2135094 Mon Sep 17 00:00:00 2001
From: Ivlev Denis <di-erz@yandex.ru>
Date: Sun, 28 Jan 2018 18:16:20 +0300
Subject: [PATCH 2/3] =?UTF-8?q?LIL-100=20=D0=9E=D0=B1=D1=80=D0=B0=D0=B1?=
 =?UTF-8?q?=D0=BE=D1=82=D1=87=D0=B8=D0=BA=20=D0=BB=D0=B0=D0=B9=D0=BA=D0=BE?=
 =?UTF-8?q?=D0=B2?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 apps/course/templates/course/_items.html |  4 +--
 apps/course/views.py                     | 35 ++++++++++++++++++++++--
 project/urls.py                          |  5 ++--
 3 files changed, 37 insertions(+), 7 deletions(-)

diff --git a/apps/course/templates/course/_items.html b/apps/course/templates/course/_items.html
index 0d876ccb..1927dfde 100644
--- a/apps/course/templates/course/_items.html
+++ b/apps/course/templates/course/_items.html
@@ -1,6 +1,6 @@
 {% load static %}
 
-<div class="courses__item"><a class="courses__preview" href="#"><img class="courses__pic" src="{{ course.cover.url }}"/>
+<div class="courses__item" data-course data-course-id={{ course.id }} data-likes-count={{ course.likes.count }}><a class="courses__preview" href="#"><img class="courses__pic" src="{{ course.cover.url }}"/>
   <div class="courses__view">Подробнее</div>
   {% if course.is_featured %}
     <div class="courses__label courses__label_fav"></div>
@@ -26,7 +26,7 @@
       <div class="user__meta">
         <div class="user__date">{{ course.created_at_humanize }}</div>
         <a class="user__likes likes" href="#">
-          <div class="likes__counter">253</div>
+          <div class="likes__counter">{{ course.likes.count }}</div>
           <div class="likes__icon">
             <svg class="icon icon-like">
               <use xlink:href="{% get_static_prefix %}img/sprite.svg#icon-like"></use>
diff --git a/apps/course/views.py b/apps/course/views.py
index a022e56b..0f9f87b2 100644
--- a/apps/course/views.py
+++ b/apps/course/views.py
@@ -1,11 +1,40 @@
+from django.contrib.auth.decorators import login_required
 from django.http import JsonResponse
-from django.views.generic import ListView
 from django.template import loader
-
-from .models import Course
+from django.views.generic import View, ListView
+from django.views.decorators.csrf import csrf_exempt
+from django.views.decorators.http import require_http_methods
+from .models import Course, Like
 from .filters import CourseFilter
 
 
+@login_required
+@csrf_exempt
+@require_http_methods(['POST'])
+def likes(request, course_id):
+    try:
+        course = Course.objects.prefetch_related('likes').get(id=course_id)
+    except Course.DoesNotExist:
+        return JsonResponse({
+            'success': False,
+            'errors': ['Course with id f{cource_id} not found']
+        })
+    else:
+        course_user_likes = course.likes.filter(user=request.user)
+        if course_user_likes.exists():
+            is_liked = False
+            course_user_likes.delete()
+        else:
+            course.likes.add(Like.objects.create(user=request.user))
+            is_liked = True
+        count = course.likes.count()
+        return JsonResponse({
+            "success": True,
+            "likes_count": count,
+            "is_liked": is_liked,
+        })
+
+
 class CoursesView(ListView):
     model = Course
     context_object_name = 'course_items'
diff --git a/project/urls.py b/project/urls.py
index ed5cd1dc..1beebd12 100644
--- a/project/urls.py
+++ b/project/urls.py
@@ -18,16 +18,17 @@ from django.urls import path, include
 from django.views.generic import TemplateView
 from django.conf import settings
 
-from apps.course.views import CoursesView
+from apps.course.views import CoursesView, likes
 
 urlpatterns = [
     path('admin/', admin.site.urls),
     path('auth/', include(('apps.auth.urls', 'lilcity'))),
     path('courses/', CoursesView.as_view(), name='courses'),
+    path('courses/<int:course_id>/like/', likes, name='likes'),
     path('', TemplateView.as_view(template_name="templates/lilcity/main.html"), name='index'),
 ]
 
 
 if settings.DEBUG:
     from django.conf.urls.static import static
-    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
\ No newline at end of file
+    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

From 485517be7579775ee24a7ab61da6b0afa7bac8a5 Mon Sep 17 00:00:00 2001
From: Ivlev Denis <di-erz@yandex.ru>
Date: Sun, 28 Jan 2018 19:12:35 +0300
Subject: [PATCH 3/3] LIL-100 Fix handler

---
 apps/course/views.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/apps/course/views.py b/apps/course/views.py
index 0f9f87b2..21973429 100644
--- a/apps/course/views.py
+++ b/apps/course/views.py
@@ -23,10 +23,12 @@ def likes(request, course_id):
         course_user_likes = course.likes.filter(user=request.user)
         if course_user_likes.exists():
             is_liked = False
+            for _course in course_user_likes.all():
+                course.likes.remove(_course)
             course_user_likes.delete()
         else:
-            course.likes.add(Like.objects.create(user=request.user))
             is_liked = True
+            course.likes.add(Like.objects.create(user=request.user))
         count = course.likes.count()
         return JsonResponse({
             "success": True,