last accessed, new migration needed!

api/migrations/0015_subscription_last_accessed.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.0.5 on 2018-06-28 10:32
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0014_course_created_at'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='subscription',
+            name='last_accessed',
+            field=models.DateTimeField(null=True),
+        ),
+    ]

api/models.py

@@ -80,6 +80,7 @@ def __repr__(self):
 class Subscription(models.Model):
     user = models.ForeignKey(User, on_delete=models.CASCADE)
     course = models.ForeignKey(Course, on_delete=models.CASCADE)
+    last_accessed = models.DateTimeField(null=True)
 
     def __str__(self):
         return '{} : {}'.format(self.user, self.course)
@@ -88,6 +89,7 @@ def __repr__(self):
         return {
             "user": self.user,
             "course": self.course,
+            "last_accessed": self.last_accessed,
         }
 
 
@@ -150,7 +152,7 @@ class LessonCompleted(models.Model):
     user = models.ForeignKey(User, on_delete=models.CASCADE)
     lesson = models.ForeignKey(Lesson, on_delete=models.CASCADE)
     grade = models.DecimalField(max_digits=3, decimal_places=1)
-    
+
 
 class WordListQuestion(models.Model):
     native = models.CharField(max_length=100)

api/urls.py

@@ -30,6 +30,8 @@
     path('course/update/', views.update_course, name="update_course"),
     path('course/popular/', views.get_popular_courses, name="popular_courses"),
     path('course/newest/', views.get_newest_courses, name="newest_courses"),
+    path('update_activity/', views.update_activity, name="update_activity"),
+    path('last_accessed/', views.get_last_accessed, name="last_accessed"),
 
     # Lessons
     path('course/<int:course_id>/create-lesson', views.create_lesson, name='create_lesson'),

api/views.py

@@ -4,6 +4,7 @@
 from django.shortcuts import render
 from django.http import HttpResponse, JsonResponse, HttpResponseForbidden
 from django.contrib.auth import authenticate, login
+from django.utils import timezone
 import json
 import string
 import random
@@ -12,7 +13,6 @@
 from django.core.exceptions import ObjectDoesNotExist
 from api.models import *
 
-
 def index(request):
     return HttpResponse("Dit is een API")
 
@@ -114,7 +114,6 @@ def create_session(user):
                 }
     return response
 
-
 # Users
 def get_users(request):
     data = parse_params(request)
@@ -313,8 +312,6 @@ def edit_course_lang(request, course_id):
     course.save()
     return HttpResponse(request)
 
-
-
 def search_courses(request):
     data = parse_params(request)
     if data is None:
@@ -343,6 +340,40 @@ def search_courses(request):
             })
     return JsonResponse(returnData, safe=False)
 
+def update_activity(request):
+    data = parse_params(request)
+    if data is None:
+        return HttpResponseForbidden()
+
+    course = Course.objects.get(pk=data['course_id'])
+    user = User.objects.get(pk=data['user_id'])
+    try:
+        subscription = Subscription.objects.get(course=course, user=user)
+        subscription.last_accessed = timezone.now()
+        subscription.save()
+    except ObjectDoesNotExist:
+        pass
+    return HttpResponse("");
+
+def get_last_accessed(request):
+    data = parse_params(request)
+    if data is None:
+        return HttpResponseForbidden()
+
+    courses = []
+    subscriptions = Subscription.objects.order_by('-last_accessed')[:4]
+    for subscription in subscriptions:
+        courses.append({
+            'id'          : subscription.course.pk,
+            'name'        : subscription.course.name,
+            'description' : subscription.course.description,
+            'image'       : subscription.course.image,
+            'subscribers' : subscription.course.subscribers,
+            'author'      : subscription.course.user.name,
+            'trans_lang'  : subscription.course.trans_lang.pk,
+            'native_lang' : subscription.course.native_lang.pk
+        })
+    return JsonResponse(courses, safe=False);
 
 # Lessons
 def get_lesson_types(request):
@@ -362,8 +393,6 @@ def create_lesson(request, course_id):
     except ObjectDoesNotExist:
         return get_json_response(serializers.serialize('json', []))
 
-
-
     created = False
     if data['lesson_id'] != '':
         created = True