[#35] Material: Delete Material (Soft Delete/Recycle Bin)

administration/templates/kelola_materi.html

@@ -30,6 +30,7 @@
             <th scope="col">Kontributor</th>
             <th scope="col">Status</th>
             <th scope="col">Jumlah Like</th>
+            <th scope="col">Pilihan</th>
           </tr>
         </thead>
         <tfoot>
@@ -40,6 +41,7 @@
             <th scope="col">Kontributor</th>
             <th scope="col">Status</th>
             <th scope="col">Jumlah Like</th>
+            <th scope="col">Pilihan</th>
           </tr>
           </tr>
         </tfoot>
@@ -57,6 +59,11 @@
             <td>{{ materi.uploader }}</td>
             <td>{{ materi.status }}</td>
             <td>{{ materi.like_count }}</td>
+            <td>
+              {% if not materi.deleted_at %}<a type="button" href="/materi/{{materi.id}}/delete" class="reject-button button-decoration"
+              style="background-color:red">Hapus</a>
+              {% endif %}
+            </td>
           </tr>
           {% endfor %}
         </tbody>

administration/views.py

@@ -505,7 +505,7 @@ class KelolaMateriView(TemplateView):
 
     def get_context_data(self, **kwargs):
         context = super(KelolaMateriView, self).get_context_data(**kwargs)
-        context['materi_list'] = Materi.objects.all()
+        context['materi_list'] = Materi.all_objects.all()
         return context
 
     def get(self, request, *args, **kwargs):

app/migrations/0023_materi_deleted_at.py

+# Generated by Django 3.1 on 2020-10-23 03:23
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('app', '0022_merge_20201011_1122'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='materi',
+            name='deleted_at',
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+    ]

app/models.py

@@ -39,6 +39,15 @@ class Category(models.Model):
 
 
 class MateriManager(models.Manager):
+    def __init__(self, *args, **kwargs):
+        self.alive_only = kwargs.pop('alive_only', True)
+        super(MateriManager, self).__init__(*args, **kwargs)
+
+    def get_queryset(self):
+        if self.alive_only:
+            return SoftDeletionQuerySet(self.model).filter(deleted_at=None)
+        return SoftDeletionQuerySet(self.model)
+        
     def search(self, search_text):
         search_vector = search.SearchVector("title", weight="A")
         search_query = search.SearchQuery(search_text)
@@ -51,8 +60,23 @@ class MateriManager(models.Manager):
 
         return search_result
 
+class SoftDeletionQuerySet(models.query.QuerySet):
+    def delete(self):
+        return super(SoftDeletionQuerySet, self).update(deleted_at=timezone.now())
 
-class Materi(models.Model):
+class SoftDeleteModel(models.Model):
+    deleted_at = models.DateTimeField(blank=True, null=True)
+
+    all_objects = MateriManager(alive_only=False)
+    
+    class Meta:
+        abstract = True
+    
+    def soft_delete(self):
+        self.deleted_at = timezone.now()
+        self.save()
+
+class Materi(SoftDeleteModel):
     cover = models.ImageField()
     content = models.FileField()
     title = models.CharField(max_length=50, default="Judul")
@@ -61,7 +85,7 @@ class Materi(models.Model):
     publisher = models.CharField(max_length=30, default="Penerbit")
     release_year = models.IntegerField(default=current_year)
     pages = models.IntegerField(default=0)
-    descriptions = models.TextField(default="Deskripsi")
+    descriptions = models.TextField(default="Deskripsi")    
     status = models.CharField(max_length=30, choices=VERIFICATION_STATUS, default=VERIFICATION_STATUS[0][0])
     categories = models.ManyToManyField(Category)
     date_created = models.DateTimeField(default=timezone.now)

app/tests.py

@@ -1071,26 +1071,57 @@ class DashboardKontributorViewTest(TestCase):
         html = response.content.decode("utf-8")
         self.assertIn(ERROR_403_MESSAGE, html)
 
-
 class DeleteMateriTest(TestCase):
     def setUp(self):
         self.client = Client()
+        self.admin_credential = {
+            "email": "admin@gov.id",
+            "password": id_generator()
+        }
+        self.superuser_credential = {
+            "email": "superuser@gov.id",
+            "password": id_generator()
+        }
+        self.contributor_credential = {
+            "email": "contributor@gov.id",
+            "password": id_generator()
+        }
+
+        self.admin = get_user_model().objects.create_user(
+            **self.admin_credential, name="Admin", is_admin=True)
+        self.superuser = get_user_model().objects.create_user(
+            **self.superuser_credential, name="Superuser", is_admin=True, is_superuser=True)
+
         self.content = SimpleUploadedFile(
             "content.txt", b"Test")
         self.cover = SimpleUploadedFile(
             "flower.jpg", b"Test file")
-        self.contributor = User.objects.create_contributor(email="kontributor@gov.id",
-                                                           password="kontributor")
+        self.contributor = User.objects.create_contributor(**self.contributor_credential)
         Materi(title="Materi 1", author="Agas", uploader=self.contributor,
                publisher="Kelas SC", descriptions="Deskripsi Materi 1",
                status="APPROVE", cover=self.cover, content=self.content).save()
         self.materi1 = Materi.objects.first()
         self.url = "/materi/" + str(self.materi1.id) + "/delete"
 
-    def test_url_delete_materi_is_success(self):
+    def test_url_delete_materi_is_success_as_contributor(self):
+        self.client.login(**self.contributor_credential)
+        response = self.client.get(self.url)
+        self.assertEqual(response.status_code, 302)
+    
+    def test_url_soft_delete_materi_is_success_as_admin(self):
+        self.client.login(**self.admin_credential)
         response = self.client.get(self.url)
         self.assertEqual(response.status_code, 302) 
-        
+        self.materi1.refresh_from_db()
+        self.assertNotEqual(self.materi1.deleted_at, None)
+    
+    def test_url_soft_delete_materi_is_success_as_superuser(self):
+        self.client.login(**self.superuser_credential)
+        response = self.client.get(self.url)
+        self.assertEqual(response.status_code, 302)
+        self.materi1.refresh_from_db()
+        self.assertNotEqual(self.materi1.deleted_at, None)
+
 class ProfilViewTest(TestCase):
     @classmethod
     def setUpTestData(cls):

app/views.py

@@ -259,6 +259,9 @@ def view_materi(request, pk):
 
 def delete_materi(request, pk):
     materi = get_object_or_404(Materi, pk=pk)
+    if request.user.is_superuser or request.user.is_admin:
+        materi.soft_delete()
+        return HttpResponseRedirect("/administration/")
     materi.delete()
     return HttpResponseRedirect("/dashboard/")