diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a7e7bb5..700a1fa 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,8 +9,8 @@ py39-django22:
     - >
         apt-get update &&
         apt-get install --no-install-recommends -y
-        python3-django python3-django-reversion python3-djangorestframework
-        python3-docutils python3-requests tox
+        python3-django python3-django-polymorphic python3-django-reversion
+        python3-djangorestframework python3-docutils python3-requests tox
   script: tox -e py39
 
 linters:
diff --git a/med/settings.py b/med/settings.py
index 69904ef..be9456a 100644
--- a/med/settings.py
+++ b/med/settings.py
@@ -36,6 +36,7 @@ INSTALLED_APPS = [
     'reversion',
     'rest_framework',
     'django_extensions',
+    'polymorphic',
 
     # Django contrib
     'django.contrib.admin',
diff --git a/media/admin.py b/media/admin.py
index 4ee4522..8a11026 100644
--- a/media/admin.py
+++ b/media/admin.py
@@ -5,12 +5,14 @@
 from django.urls import reverse
 from django.utils.html import format_html
 from django.utils.translation import ugettext_lazy as _
+from polymorphic.admin import PolymorphicChildModelAdmin, \
+    PolymorphicParentModelAdmin
 from med.admin import admin_site
 from reversion.admin import VersionAdmin
 
 from .forms import MediaAdminForm
-from .models import Author, CD, Comic, Emprunt, FutureMedium, Game, Manga,\
-    Novel, Review, Vinyl
+from .models import Author, Borrowable, CD, Comic, Emprunt, FutureMedium, \
+    Game, Manga, Novel, Review, Vinyl
 
 
 class AuthorAdmin(VersionAdmin):
@@ -18,7 +20,17 @@ class AuthorAdmin(VersionAdmin):
     search_fields = ('name',)
 
 
-class MediumAdmin(VersionAdmin):
+class BorrowableAdmin(PolymorphicParentModelAdmin):
+    search_fields = ('title',)
+    child_models = (CD, Comic, Manga, Novel, Review, Vinyl,)
+
+    def get_model_perms(self, request):
+        # We don't want that the borrowable items appear directly in
+        # main menu, but we still want search borrowable items.
+        return {}
+
+
+class MediumAdmin(VersionAdmin, PolymorphicChildModelAdmin):
     list_display = ('__str__', 'authors_list', 'side_identifier', 'isbn',
                     'external_link')
     search_fields = ('title', 'authors__name', 'side_identifier', 'subtitle',
@@ -26,6 +38,7 @@ class MediumAdmin(VersionAdmin):
     autocomplete_fields = ('authors',)
     date_hierarchy = 'publish_date'
     form = MediaAdminForm
+    show_in_index = True
 
     def authors_list(self, obj):
         return ", ".join([a.name for a in obj.authors.all()])
@@ -77,10 +90,11 @@ class FutureMediumAdmin(VersionAdmin):
                                        extra_context=extra_context)
 
 
-class CDAdmin(VersionAdmin):
+class CDAdmin(VersionAdmin, PolymorphicChildModelAdmin):
     list_display = ('title', 'authors_list', 'side_identifier',)
     search_fields = ('title', 'authors__name', 'side_identifier',)
     autocomplete_fields = ('authors',)
+    show_in_index = True
 
     def authors_list(self, obj):
         return ", ".join([a.name for a in obj.authors.all()])
@@ -88,10 +102,11 @@ class CDAdmin(VersionAdmin):
     authors_list.short_description = _('authors')
 
 
-class VinylAdmin(VersionAdmin):
+class VinylAdmin(VersionAdmin, PolymorphicChildModelAdmin):
     list_display = ('title', 'authors_list', 'side_identifier', 'rpm',)
     search_fields = ('title', 'authors__name', 'side_identifier', 'rpm',)
     autocomplete_fields = ('authors',)
+    show_in_index = True
 
     def authors_list(self, obj):
         return ", ".join([a.name for a in obj.authors.all()])
@@ -99,9 +114,10 @@ class VinylAdmin(VersionAdmin):
     authors_list.short_description = _('authors')
 
 
-class ReviewAdmin(VersionAdmin):
+class ReviewAdmin(VersionAdmin, PolymorphicChildModelAdmin):
     list_display = ('__str__', 'number', 'year', 'month', 'day', 'double',)
     search_fields = ('title', 'number', 'year',)
+    show_in_index = True
 
 
 class EmpruntAdmin(VersionAdmin):
@@ -140,14 +156,16 @@ class EmpruntAdmin(VersionAdmin):
         return super().add_view(request, form_url, extra_context)
 
 
-class GameAdmin(VersionAdmin):
-    list_display = ('name', 'owner', 'duration', 'players_min',
+class GameAdmin(VersionAdmin, PolymorphicChildModelAdmin):
+    list_display = ('title', 'owner', 'duration', 'players_min',
                     'players_max', 'comment')
     search_fields = ('name', 'owner__username', 'duration', 'comment')
     autocomplete_fields = ('owner',)
+    show_in_index = True
 
 
 admin_site.register(Author, AuthorAdmin)
+admin_site.register(Borrowable, BorrowableAdmin)
 admin_site.register(Comic, MediumAdmin)
 admin_site.register(Manga, MediumAdmin)
 admin_site.register(Novel, MediumAdmin)
diff --git a/media/forms.py b/media/forms.py
index 04ed691..0651764 100644
--- a/media/forms.py
+++ b/media/forms.py
@@ -9,6 +9,7 @@ import unicodedata
 from urllib.error import HTTPError
 import urllib.request
 
+from django.core.exceptions import ValidationError
 from django.db.models import QuerySet
 from django.forms import ModelForm
 from django.utils.translation import gettext_lazy as _
@@ -320,6 +321,13 @@ class MediaAdminForm(ModelForm):
         return self.cleaned_data
 
     def _clean_fields(self):
+        # First clean ISBN field
+        isbn_field = self.fields['isbn']
+        isbn = isbn_field.widget.value_from_datadict(
+            self.data, self.files, self.add_prefix('isbn'))
+        isbn = isbn_field.clean(isbn)
+        self.cleaned_data['isbn'] = isbn
+
         for name, field in self.fields.items():
             # value_from_datadict() gets the data from the data dictionaries.
             # Each widget type knows how to retrieve its own data, because some
@@ -329,7 +337,6 @@ class MediaAdminForm(ModelForm):
             else:
                 value = field.widget.value_from_datadict(
                     self.data, self.files, self.add_prefix(name))
-            from django.core.exceptions import ValidationError
             try:
                 # We don't want to check a field when we enter an ISBN.
                 if "isbn" not in self.data \
diff --git a/media/locale/fr/LC_MESSAGES/django.po b/media/locale/fr/LC_MESSAGES/django.po
index 4d4f603..7e2ba46 100644
--- a/media/locale/fr/LC_MESSAGES/django.po
+++ b/media/locale/fr/LC_MESSAGES/django.po
@@ -3,7 +3,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-10-23 18:27+0200\n"
+"POT-Creation-Date: 2021-10-26 15:14+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -13,20 +13,20 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n > 1);\n"
 
-#: admin.py:33 admin.py:88 admin.py:99 models.py:29 models.py:65 models.py:130
-#: models.py:192 models.py:243 models.py:274
+#: admin.py:46 admin.py:102 admin.py:114 models.py:30 models.py:77
+#: models.py:149 models.py:221 models.py:290 models.py:348 models.py:394
 msgid "authors"
 msgstr "auteurs"
 
-#: admin.py:43
+#: admin.py:56
 msgid "external url"
 msgstr "URL externe"
 
-#: admin.py:126
+#: admin.py:142
 msgid "Turn back"
 msgstr "Rendre"
 
-#: admin.py:129 models.py:407
+#: admin.py:145 models.py:574
 msgid "given back to"
 msgstr "rendu à"
 
@@ -38,220 +38,249 @@ msgstr "ISBN-10 ou ISBN-13"
 msgid "This ISBN is not found."
 msgstr "L'ISBN n'a pas été trouvé."
 
-#: models.py:16 models.py:431
-msgid "name"
-msgstr "nom"
-
-#: models.py:21
-msgid "note"
-msgstr "note"
-
-#: models.py:28
-msgid "author"
-msgstr "auteur"
-
-#: models.py:35 models.py:100 models.py:162 models.py:345
-msgid "ISBN"
-msgstr "ISBN"
-
-#: models.py:36 models.py:101 models.py:163 models.py:346
-msgid "You may be able to scan it from a bar code."
-msgstr "Peut souvent être scanné à partir du code barre."
-
-#: models.py:43 models.py:108 models.py:170 models.py:224 models.py:263
-#: models.py:294
-msgid "title"
-msgstr "titre"
-
-#: models.py:48 models.py:113 models.py:175
-msgid "subtitle"
-msgstr "sous-titre"
-
-#: models.py:54 models.py:119 models.py:181
-msgid "external URL"
-msgstr "URL externe"
-
-#: models.py:59 models.py:124 models.py:186 models.py:229 models.py:268
-msgid "side identifier"
-msgstr "côte"
-
-#: models.py:69 models.py:134 models.py:196
-msgid "number of pages"
-msgstr "nombre de pages"
-
-#: models.py:75 models.py:140 models.py:202
-msgid "publish date"
-msgstr "date de publication"
-
-#: models.py:81 models.py:146 models.py:208 models.py:247 models.py:278
-#: models.py:329 models.py:363
-msgid "present"
-msgstr "présent"
-
-#: models.py:82 models.py:147 models.py:209 models.py:248 models.py:279
-#: models.py:330 models.py:364
-msgid "Tell that the medium is present in the Mediatek."
-msgstr "Indique que le medium est présent à la Mediatek."
-
-#: models.py:93 models.py:355
-msgid "comic"
-msgstr "BD"
-
-#: models.py:94
-msgid "comics"
-msgstr "BDs"
-
-#: models.py:155
-msgid "manga"
-msgstr "manga"
-
-#: models.py:156
-msgid "mangas"
-msgstr "mangas"
-
-#: models.py:217
-msgid "novel"
-msgstr "roman"
-
-#: models.py:218
-msgid "novels"
-msgstr "romans"
-
-#: models.py:234
-msgid "rounds per minute"
-msgstr "tours par minute"
-
-#: models.py:236
-msgid "33 RPM"
-msgstr "33 TPM"
-
-#: models.py:237
-msgid "45 RPM"
-msgstr "45 TPM"
-
-#: models.py:256
-msgid "vinyl"
-msgstr "vinyle"
-
-#: models.py:257
-msgid "vinyls"
-msgstr "vinyles"
-
-#: models.py:287
-msgid "CD"
-msgstr "CD"
-
-#: models.py:288
+#: management/commands/migrate_to_new_format.py:52 models.py:408 models.py:415
 msgid "CDs"
 msgstr "CDs"
 
-#: models.py:299
-msgid "number"
-msgstr "nombre"
+#: management/commands/migrate_to_new_format.py:52 models.py:407 models.py:414
+msgid "CD"
+msgstr "CD"
 
-#: models.py:303
-msgid "year"
-msgstr "année"
+#: management/commands/migrate_to_new_format.py:68 models.py:362 models.py:377
+msgid "vinyls"
+msgstr "vinyles"
 
-#: models.py:310
-msgid "month"
-msgstr "mois"
+#: management/commands/migrate_to_new_format.py:68 models.py:361 models.py:376
+msgid "vinyl"
+msgstr "vinyle"
 
-#: models.py:317
-msgid "day"
-msgstr "jour"
-
-#: models.py:324
-msgid "double"
-msgstr "double"
-
-#: models.py:338
-msgid "review"
-msgstr "revue"
-
-#: models.py:339
+#: management/commands/migrate_to_new_format.py:86 models.py:466 models.py:506
 msgid "reviews"
 msgstr "revues"
 
-#: models.py:353
-msgid "type"
-msgstr "type"
+#: management/commands/migrate_to_new_format.py:86 models.py:465 models.py:505
+msgid "review"
+msgstr "revue"
 
-#: models.py:356
-msgid "Manga"
-msgstr "Manga"
+#: management/commands/migrate_to_new_format.py:106 models.py:629 models.py:670
+msgid "games"
+msgstr "jeux"
 
-#: models.py:357
-msgid "Roman"
-msgstr "Roman"
-
-#: models.py:369
-msgid "future medium"
-msgstr "medium à importer"
-
-#: models.py:370
-msgid "future media"
-msgstr "medias à importer"
-
-#: models.py:384
-msgid "borrower"
-msgstr "emprunteur"
-
-#: models.py:387
-msgid "borrowed on"
-msgstr "emprunté le"
-
-#: models.py:392
-msgid "given back on"
-msgstr "rendu le"
-
-#: models.py:398
-msgid "borrowed with"
-msgstr "emprunté avec"
-
-#: models.py:399
-msgid "The keyholder that registered this borrowed item."
-msgstr "Le permanencier qui enregistre cet emprunt."
-
-#: models.py:408
-msgid "The keyholder to whom this item was given back."
-msgstr "Le permanencier à qui l'emprunt a été rendu."
-
-#: models.py:415
-msgid "borrowed item"
-msgstr "emprunt"
-
-#: models.py:416
-msgid "borrowed items"
-msgstr "emprunts"
-
-#: models.py:436
-msgid "owner"
-msgstr "propriétaire"
-
-#: models.py:441
-msgid "duration"
-msgstr "durée"
-
-#: models.py:445
-msgid "minimum number of players"
-msgstr "nombre minimum de joueurs"
-
-#: models.py:449
-msgid "maximum number of players"
-msgstr "nombre maximum de joueurs"
-
-#: models.py:454
-msgid "comment"
-msgstr "commentaire"
-
-#: models.py:461
+#: management/commands/migrate_to_new_format.py:106 models.py:628 models.py:669
 msgid "game"
 msgstr "jeu"
 
-#: models.py:462
-msgid "games"
-msgstr "jeux"
+#: models.py:17 models.py:598
+msgid "name"
+msgstr "nom"
+
+#: models.py:22
+msgid "note"
+msgstr "note"
+
+#: models.py:29
+msgid "author"
+msgstr "auteur"
+
+#: models.py:37 models.py:127 models.py:199 models.py:268 models.py:329
+#: models.py:383 models.py:421
+msgid "title"
+msgstr "titre"
+
+#: models.py:41 models.py:165 models.py:237 models.py:306 models.py:352
+#: models.py:398 models.py:456 models.py:530
+msgid "present"
+msgstr "présent"
+
+#: models.py:42 models.py:166 models.py:238 models.py:307 models.py:353
+#: models.py:399 models.py:457 models.py:531
+msgid "Tell that the medium is present in the Mediatek."
+msgstr "Indique que le medium est présent à la Mediatek."
+
+#: models.py:60
+msgid "borrowable"
+msgstr "empruntable"
+
+#: models.py:61
+msgid "borrowables"
+msgstr "empruntables"
+
+#: models.py:66 models.py:138 models.py:210 models.py:279
+msgid "external URL"
+msgstr "URL externe"
+
+#: models.py:71 models.py:143 models.py:215 models.py:284 models.py:334
+#: models.py:388
+msgid "side identifier"
+msgstr "côte"
+
+#: models.py:81
+msgid "medium"
+msgstr "medium"
+
+#: models.py:82
+msgid "media"
+msgstr "media"
+
+#: models.py:87 models.py:119 models.py:191 models.py:260 models.py:512
+msgid "ISBN"
+msgstr "ISBN"
+
+#: models.py:88 models.py:120 models.py:192 models.py:261 models.py:513
+msgid "You may be able to scan it from a bar code."
+msgstr "Peut souvent être scanné à partir du code barre."
+
+#: models.py:95 models.py:132 models.py:204 models.py:273
+msgid "subtitle"
+msgstr "sous-titre"
+
+#: models.py:101 models.py:153 models.py:225 models.py:294
+msgid "number of pages"
+msgstr "nombre de pages"
+
+#: models.py:107 models.py:159 models.py:231 models.py:300
+msgid "publish date"
+msgstr "date de publication"
+
+#: models.py:113
+msgid "book"
+msgstr "livre"
+
+#: models.py:114
+msgid "books"
+msgstr "livres"
+
+#: models.py:177 models.py:184
+msgid "comic"
+msgstr "BD"
+
+#: models.py:178 models.py:185
+msgid "comics"
+msgstr "BDs"
+
+#: models.py:246 models.py:253
+msgid "manga"
+msgstr "manga"
+
+#: models.py:247 models.py:254
+msgid "mangas"
+msgstr "mangas"
+
+#: models.py:315 models.py:322
+msgid "novel"
+msgstr "roman"
+
+#: models.py:316 models.py:323
+msgid "novels"
+msgstr "romans"
+
+#: models.py:339 models.py:368
+msgid "rounds per minute"
+msgstr "tours par minute"
+
+#: models.py:341 models.py:370
+msgid "33 RPM"
+msgstr "33 TPM"
+
+#: models.py:342 models.py:371
+msgid "45 RPM"
+msgstr "45 TPM"
+
+#: models.py:426 models.py:472
+msgid "number"
+msgstr "nombre"
+
+#: models.py:430 models.py:476
+msgid "year"
+msgstr "année"
+
+#: models.py:437 models.py:483
+msgid "month"
+msgstr "mois"
+
+#: models.py:444 models.py:490
+msgid "day"
+msgstr "jour"
+
+#: models.py:451 models.py:497
+msgid "double"
+msgstr "double"
+
+#: models.py:520
+msgid "type"
+msgstr "type"
+
+#: models.py:522
+msgid "Comic"
+msgstr "BD"
+
+#: models.py:523
+msgid "Manga"
+msgstr "Manga"
+
+#: models.py:524
+msgid "Roman"
+msgstr "Roman"
+
+#: models.py:536
+msgid "future medium"
+msgstr "medium à importer"
+
+#: models.py:537
+msgid "future media"
+msgstr "medias à importer"
+
+#: models.py:551
+msgid "borrower"
+msgstr "emprunteur"
+
+#: models.py:554
+msgid "borrowed on"
+msgstr "emprunté le"
+
+#: models.py:559
+msgid "given back on"
+msgstr "rendu le"
+
+#: models.py:565
+msgid "borrowed with"
+msgstr "emprunté avec"
+
+#: models.py:566
+msgid "The keyholder that registered this borrowed item."
+msgstr "Le permanencier qui enregistre cet emprunt."
+
+#: models.py:575
+msgid "The keyholder to whom this item was given back."
+msgstr "Le permanencier à qui l'emprunt a été rendu."
+
+#: models.py:582
+msgid "borrowed item"
+msgstr "emprunt"
+
+#: models.py:583
+msgid "borrowed items"
+msgstr "emprunts"
+
+#: models.py:603 models.py:644
+msgid "owner"
+msgstr "propriétaire"
+
+#: models.py:608 models.py:649
+msgid "duration"
+msgstr "durée"
+
+#: models.py:612 models.py:653
+msgid "minimum number of players"
+msgstr "nombre minimum de joueurs"
+
+#: models.py:616 models.py:657
+msgid "maximum number of players"
+msgstr "nombre maximum de joueurs"
+
+#: models.py:621 models.py:662
+msgid "comment"
+msgstr "commentaire"
 
 #: templates/media/generate_side_identifier.html:3
 msgid "Generate side identifier"
@@ -277,6 +306,6 @@ msgstr "ISBN invalide : mauvaise longueur"
 msgid "Invalid ISBN: Only upper case allowed"
 msgstr "ISBN invalide : seulement les majuscules sont autorisées"
 
-#: views.py:51
+#: views.py:47
 msgid "Welcome to the Mediatek database"
 msgstr "Bienvenue sur la base de données de la Mediatek"
diff --git a/media/management/commands/migrate_to_new_format.py b/media/management/commands/migrate_to_new_format.py
new file mode 100644
index 0000000..da0a60a
--- /dev/null
+++ b/media/management/commands/migrate_to_new_format.py
@@ -0,0 +1,127 @@
+from django.core.management import BaseCommand
+from django.db import transaction
+from django.utils.translation import gettext_lazy as _
+from media.models import CD, Comic, Game, Manga, Novel, Review, Vinyl, \
+    OldCD, OldComic, OldGame, OldManga, OldNovel, OldReview, OldVinyl
+from tqdm import tqdm
+
+
+class Command(BaseCommand):
+    """
+    Convert old format into new format
+    """
+
+    def add_arguments(self, parser):
+        parser.add_argument('--doit', action='store_true',
+                            help="Actually do the mogration.")
+
+    @transaction.atomic
+    def handle(self, *args, **options):  # noqa: C901
+        # Migrate books
+        for old_book_class, book_class in [(OldComic, Comic),
+                                           (OldManga, Manga),
+                                           (OldNovel, Novel)]:
+            name = book_class._meta.verbose_name
+            name_plural = book_class._meta.verbose_name_plural
+            for book in tqdm(old_book_class.objects.all(),
+                             desc=name_plural, unit=str(name)):
+                try:
+                    new_book = book_class.objects.create(
+                        isbn=book.isbn,
+                        title=book.title,
+                        subtitle=book.subtitle,
+                        external_url=book.external_url,
+                        side_identifier=book.side_identifier,
+                        number_of_pages=book.number_of_pages,
+                        publish_date=book.publish_date,
+                        present=book.present,
+                    )
+                    new_book.authors.set(book.authors.all())
+                    new_book.save()
+                except Exception:
+                    self.stderr.write(f"There was an error with {name} "
+                                      f"{book} ({book.pk})")
+                    raise
+
+            self.stdout.write(f"{book_class.objects.count()} {name_plural} "
+                              "migrated")
+
+        # Migrate CDs
+        for cd in tqdm(OldCD.objects.all(),
+                       desc=_("CDs"), unit=str(_("CD"))):
+            try:
+                new_cd = CD.objects.create(
+                    title=cd.title,
+                    present=cd.present,
+                )
+                new_cd.authors.set(cd.authors.all())
+                new_cd.save()
+            except Exception:
+                self.stderr.write(f"There was an error with {cd} ({cd.pk})")
+                raise
+
+        self.stdout.write(f"{CD.objects.count()} {_('CDs')} migrated")
+
+        # Migrate vinyls
+        for vinyl in tqdm(OldVinyl.objects.all(),
+                          desc=_("vinyls"), unit=str(_("vinyl"))):
+            try:
+                new_vinyl = Vinyl.objects.create(
+                    title=vinyl.title,
+                    present=vinyl.present,
+                    rpm=vinyl.rpm,
+                )
+                new_vinyl.authors.set(vinyl.authors.all())
+                new_vinyl.save()
+            except Exception:
+                self.stderr.write(f"There was an error with {vinyl} "
+                                  f"({vinyl.pk})")
+                raise
+
+        self.stdout.write(f"{Vinyl.objects.count()} {_('vinyls')} migrated")
+
+        # Migrate reviews
+        for review in tqdm(OldReview.objects.all(),
+                           desc=_("reviews"), unit=str(_("review"))):
+            try:
+                Review.objects.create(
+                    title=review.title,
+                    number=review.number,
+                    year=review.year,
+                    month=review.month,
+                    day=review.day,
+                    double=review.double,
+                    present=review.present,
+                )
+            except Exception:
+                self.stderr.write(f"There was an error with {review} "
+                                  f"({review.pk})")
+                raise
+
+        self.stdout.write(f"{Review.objects.count()} {_('reviews')} migrated")
+
+        # Migrate games
+        for game in tqdm(OldGame.objects.all(),
+                         desc=_("games"), unit=str(_("game"))):
+            try:
+                Game.objects.create(
+                    title=game.title,
+                    owner=game.owner,
+                    duration=game.duration,
+                    players_min=game.players_min,
+                    players_max=game.players_max,
+                    comment=game.comment,
+                )
+            except Exception:
+                self.stderr.write(f"There was an error with {game} "
+                                  f"({game.pk})")
+                raise
+
+        self.stdout.write(f"{Game.objects.count()} {_('games')} migrated")
+
+        if not options['doit']:
+            self.stdout.write(self.style.WARNING(
+                "Warning: Data were't saved. Please use --doit option "
+                "to really perform the migration."
+            ))
+            exit(1)
diff --git a/media/migrations/0042_auto_20211023_1929.py b/media/migrations/0042_auto_20211023_1929.py
new file mode 100644
index 0000000..720aa82
--- /dev/null
+++ b/media/migrations/0042_auto_20211023_1929.py
@@ -0,0 +1,70 @@
+# Generated by Django 2.2.17 on 2021-10-23 17:29
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('media', '0041_auto_20211023_1838'),
+    ]
+
+    operations = [
+        migrations.RenameModel(
+            old_name='CD',
+            new_name='OldCD',
+        ),
+        migrations.RenameModel(
+            old_name='Manga',
+            new_name='OldManga',
+        ),
+        # Remove index before renaming the model
+        migrations.AlterField(
+            model_name='game',
+            name='owner',
+            field=models.ForeignKey(db_index=False, on_delete=models.deletion.PROTECT, to=settings.AUTH_USER_MODEL, verbose_name='owner'),
+        ),
+        migrations.RenameModel(
+            old_name='Game',
+            new_name='OldGame',
+        ),
+        migrations.AlterField(
+            model_name='oldgame',
+            name='owner',
+            field=models.ForeignKey(db_index=True, on_delete=models.deletion.PROTECT, to=settings.AUTH_USER_MODEL, verbose_name='owner'),
+        ),
+        migrations.RenameField(
+            model_name='oldgame',
+            old_name='name',
+            new_name='title',
+        ),
+        migrations.RenameModel(
+            old_name='Novel',
+            new_name='OldNovel',
+        ),
+        migrations.RenameModel(
+            old_name='Comic',
+            new_name='OldComic',
+        ),
+        migrations.RenameModel(
+            old_name='Review',
+            new_name='OldReview',
+        ),
+        migrations.RenameModel(
+            old_name='Vinyl',
+            new_name='OldVinyl',
+        ),
+        migrations.AlterModelOptions(
+            name='oldcomic',
+            options={'ordering': ['title', 'subtitle'], 'verbose_name': 'comic', 'verbose_name_plural': 'comics'},
+        ),
+        migrations.AlterModelOptions(
+            name='oldmanga',
+            options={'ordering': ['title'], 'verbose_name': 'manga', 'verbose_name_plural': 'mangas'},
+        ),
+        migrations.AlterModelOptions(
+            name='oldnovel',
+            options={'ordering': ['title', 'subtitle'], 'verbose_name': 'novel', 'verbose_name_plural': 'novels'},
+        ),
+    ]
diff --git a/media/migrations/0043_auto_20211023_2012.py b/media/migrations/0043_auto_20211023_2012.py
new file mode 100644
index 0000000..618dba3
--- /dev/null
+++ b/media/migrations/0043_auto_20211023_2012.py
@@ -0,0 +1,166 @@
+# Generated by Django 2.2.17 on 2021-10-23 18:12
+
+from django.conf import settings
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+import media.fields
+import media.validators
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contenttypes', '0002_remove_content_type_name'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('media', '0042_auto_20211023_1929'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Borrowable',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('isbn', media.fields.ISBNField(blank=True, help_text='You may be able to scan it from a bar code.', max_length=28, null=True, unique=True, validators=[media.validators.isbn_validator], verbose_name='ISBN')),
+                ('title', models.CharField(max_length=255, verbose_name='title')),
+                ('present', models.BooleanField(default=False, help_text='Tell that the medium is present in the Mediatek.', verbose_name='present')),
+                ('polymorphic_ctype', models.ForeignKey(editable=False, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='polymorphic_media.borrowable_set+', to='contenttypes.ContentType')),
+            ],
+            options={
+                'verbose_name': 'borrowable',
+                'verbose_name_plural': 'borrowables',
+            },
+        ),
+        migrations.AlterModelOptions(
+            name='oldgame',
+            options={'ordering': ['title'], 'verbose_name': 'game', 'verbose_name_plural': 'games'},
+        ),
+        migrations.AlterField(
+            model_name='emprunt',
+            name='media',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='media.Borrowable'),
+        ),
+        migrations.CreateModel(
+            name='Medium',
+            fields=[
+                ('borrowable_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='media.Borrowable')),
+                ('external_url', models.URLField(blank=True, verbose_name='external URL')),
+                ('side_identifier', models.CharField(max_length=255, verbose_name='side identifier')),
+                ('authors', models.ManyToManyField(to='media.Author', verbose_name='authors')),
+            ],
+            options={
+                'verbose_name': 'medium',
+                'verbose_name_plural': 'media',
+            },
+            bases=('media.borrowable',),
+        ),
+        migrations.CreateModel(
+            name='Review',
+            fields=[
+                ('borrowable_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='media.Borrowable')),
+                ('number', models.PositiveIntegerField(verbose_name='number')),
+                ('year', models.PositiveIntegerField(blank=True, default=None, null=True, verbose_name='year')),
+                ('month', models.PositiveIntegerField(blank=True, default=None, null=True, verbose_name='month')),
+                ('day', models.PositiveIntegerField(blank=True, default=None, null=True, verbose_name='day')),
+                ('double', models.BooleanField(default=False, verbose_name='double')),
+            ],
+            options={
+                'verbose_name': 'review',
+                'verbose_name_plural': 'reviews',
+                'ordering': ['title', 'number'],
+            },
+            bases=('media.borrowable',),
+        ),
+        migrations.CreateModel(
+            name='Book',
+            fields=[
+                ('medium_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='media.Medium')),
+                ('subtitle', models.CharField(blank=True, max_length=255, verbose_name='subtitle')),
+                ('number_of_pages', models.PositiveIntegerField(blank=True, null=True, verbose_name='number of pages')),
+                ('publish_date', models.DateField(blank=True, null=True, verbose_name='publish date')),
+            ],
+            options={
+                'verbose_name': 'book',
+                'verbose_name_plural': 'books',
+            },
+            bases=('media.medium',),
+        ),
+        migrations.CreateModel(
+            name='CD',
+            fields=[
+                ('medium_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='media.Medium')),
+            ],
+            options={
+                'verbose_name': 'CD',
+                'verbose_name_plural': 'CDs',
+                'ordering': ['title'],
+            },
+            bases=('media.medium',),
+        ),
+        migrations.CreateModel(
+            name='Vinyl',
+            fields=[
+                ('medium_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='media.Medium')),
+                ('rpm', models.PositiveIntegerField(choices=[(33, '33 RPM'), (45, '45 RPM')], verbose_name='rounds per minute')),
+            ],
+            options={
+                'verbose_name': 'vinyl',
+                'verbose_name_plural': 'vinyls',
+                'ordering': ['title'],
+            },
+            bases=('media.medium',),
+        ),
+        migrations.CreateModel(
+            name='Game',
+            fields=[
+                ('borrowable_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='media.Borrowable')),
+                ('duration', models.CharField(choices=[('-1h', '-1h'), ('1-2h', '1-2h'), ('2-3h', '2-3h'), ('3-4h', '3-4h'), ('4h+', '4h+')], max_length=255, verbose_name='duration')),
+                ('players_min', models.IntegerField(validators=[django.core.validators.MinValueValidator(1)], verbose_name='minimum number of players')),
+                ('players_max', models.IntegerField(validators=[django.core.validators.MinValueValidator(1)], verbose_name='maximum number of players')),
+                ('comment', models.CharField(blank=True, max_length=255, verbose_name='comment')),
+                ('owner', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to=settings.AUTH_USER_MODEL, verbose_name='owner')),
+            ],
+            options={
+                'verbose_name': 'game',
+                'verbose_name_plural': 'games',
+                'ordering': ['title'],
+            },
+            bases=('media.borrowable',),
+        ),
+        migrations.CreateModel(
+            name='Comic',
+            fields=[
+                ('book_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='media.Book')),
+            ],
+            options={
+                'verbose_name': 'comic',
+                'verbose_name_plural': 'comics',
+                'ordering': ['title', 'subtitle'],
+            },
+            bases=('media.book',),
+        ),
+        migrations.CreateModel(
+            name='Manga',
+            fields=[
+                ('book_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='media.Book')),
+            ],
+            options={
+                'verbose_name': 'manga',
+                'verbose_name_plural': 'mangas',
+                'ordering': ['title', 'subtitle'],
+            },
+            bases=('media.book',),
+        ),
+        migrations.CreateModel(
+            name='Novel',
+            fields=[
+                ('book_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='media.Book')),
+            ],
+            options={
+                'verbose_name': 'novel',
+                'verbose_name_plural': 'novels',
+                'ordering': ['title', 'subtitle'],
+            },
+            bases=('media.book',),
+        ),
+    ]
diff --git a/media/models.py b/media/models.py
index a797cff..0932058 100644
--- a/media/models.py
+++ b/media/models.py
@@ -5,6 +5,7 @@
 from django.core.validators import MinValueValidator
 from django.db import models
 from django.utils.translation import gettext_lazy as _
+from polymorphic.models import PolymorphicModel
 
 from .fields import ISBNField
 
@@ -30,7 +31,90 @@ class Author(models.Model):
         ordering = ['name']
 
 
-class Comic(models.Model):
+class Borrowable(PolymorphicModel):
+    isbn = ISBNField(
+        _('ISBN'),
+        help_text=_('You may be able to scan it from a bar code.'),
+        unique=True,
+        blank=True,
+        null=True,
+    )
+
+    title = models.CharField(
+        max_length=255,
+        verbose_name=_("title"),
+    )
+
+    present = models.BooleanField(
+        verbose_name=_("present"),
+        help_text=_("Tell that the medium is present in the Mediatek."),
+        default=False,
+    )
+
+    def __str__(self):
+        obj = self
+        if obj.__class__ == Borrowable:
+            # Get true object instance, useful for autocompletion
+            obj = Borrowable.objects.get(pk=obj.pk)
+
+        title = obj.title
+        if hasattr(obj, 'subtitle'):
+            subtitle = obj.subtitle
+            if subtitle:
+                title = f"{title} : {subtitle}"
+        return title
+
+    class Meta:
+        verbose_name = _('borrowable')
+        verbose_name_plural = _('borrowables')
+
+
+class Medium(Borrowable):
+    external_url = models.URLField(
+        verbose_name=_('external URL'),
+        blank=True,
+    )
+
+    side_identifier = models.CharField(
+        verbose_name=_('side identifier'),
+        max_length=255,
+    )
+
+    authors = models.ManyToManyField(
+        'Author',
+        verbose_name=_('authors'),
+    )
+
+    class Meta:
+        verbose_name = _("medium")
+        verbose_name_plural = _("media")
+
+
+class Book(Medium):
+    subtitle = models.CharField(
+        verbose_name=_('subtitle'),
+        max_length=255,
+        blank=True,
+    )
+
+    number_of_pages = models.PositiveIntegerField(
+        verbose_name=_('number of pages'),
+        blank=True,
+        null=True,
+    )
+
+    publish_date = models.DateField(
+        verbose_name=_('publish date'),
+        blank=True,
+        null=True,
+    )
+
+    class Meta:
+        verbose_name = _("book")
+        verbose_name_plural = _("books")
+
+
+class OldComic(models.Model):
     isbn = ISBNField(
         _('ISBN'),
         help_text=_('You may be able to scan it from a bar code.'),
@@ -95,7 +179,14 @@ class Comic(models.Model):
         ordering = ['title', 'subtitle']
 
 
-class Manga(models.Model):
+class Comic(Book):
+    class Meta:
+        verbose_name = _("comic")
+        verbose_name_plural = _("comics")
+        ordering = ['title', 'subtitle']
+
+
+class OldManga(models.Model):
     isbn = ISBNField(
         _('ISBN'),
         help_text=_('You may be able to scan it from a bar code.'),
@@ -157,7 +248,14 @@ class Manga(models.Model):
         ordering = ['title']
 
 
-class Novel(models.Model):
+class Manga(Book):
+    class Meta:
+        verbose_name = _("manga")
+        verbose_name_plural = _("mangas")
+        ordering = ['title', 'subtitle']
+
+
+class OldNovel(models.Model):
     isbn = ISBNField(
         _('ISBN'),
         help_text=_('You may be able to scan it from a bar code.'),
@@ -219,7 +317,14 @@ class Novel(models.Model):
         ordering = ['title', 'subtitle']
 
 
-class Vinyl(models.Model):
+class Novel(Book):
+    class Meta:
+        verbose_name = _("novel")
+        verbose_name_plural = _("novels")
+        ordering = ['title', 'subtitle']
+
+
+class OldVinyl(models.Model):
     title = models.CharField(
         verbose_name=_('title'),
         max_length=255,
@@ -258,7 +363,22 @@ class Vinyl(models.Model):
         ordering = ['title']
 
 
-class CD(models.Model):
+class Vinyl(Medium):
+    rpm = models.PositiveIntegerField(
+        verbose_name=_('rounds per minute'),
+        choices=[
+            (33, _('33 RPM')),
+            (45, _('45 RPM')),
+        ],
+    )
+
+    class Meta:
+        verbose_name = _("vinyl")
+        verbose_name_plural = _("vinyls")
+        ordering = ['title']
+
+
+class OldCD(models.Model):
     title = models.CharField(
         verbose_name=_('title'),
         max_length=255,
@@ -289,7 +409,14 @@ class CD(models.Model):
         ordering = ['title']
 
 
-class Review(models.Model):
+class CD(Medium):
+    class Meta:
+        verbose_name = _("CD")
+        verbose_name_plural = _("CDs")
+        ordering = ['title']
+
+
+class OldReview(models.Model):
     title = models.CharField(
         verbose_name=_('title'),
         max_length=255,
@@ -340,6 +467,46 @@ class Review(models.Model):
         ordering = ['title', 'number']
 
 
+class Review(Borrowable):
+    number = models.PositiveIntegerField(
+        verbose_name=_('number'),
+    )
+
+    year = models.PositiveIntegerField(
+        verbose_name=_('year'),
+        null=True,
+        blank=True,
+        default=None,
+    )
+
+    month = models.PositiveIntegerField(
+        verbose_name=_('month'),
+        null=True,
+        blank=True,
+        default=None,
+    )
+
+    day = models.PositiveIntegerField(
+        verbose_name=_('day'),
+        null=True,
+        blank=True,
+        default=None,
+    )
+
+    double = models.BooleanField(
+        verbose_name=_('double'),
+        default=False,
+    )
+
+    def __str__(self):
+        return self.title + " n°" + str(self.number)
+
+    class Meta:
+        verbose_name = _("review")
+        verbose_name_plural = _("reviews")
+        ordering = ['title', 'number']
+
+
 class FutureMedium(models.Model):
     isbn = ISBNField(
         _('ISBN'),
@@ -375,7 +542,7 @@ class FutureMedium(models.Model):
 
 class Emprunt(models.Model):
     media = models.ForeignKey(
-        'Comic',
+        'media.Borrowable',
         on_delete=models.PROTECT,
     )
     user = models.ForeignKey(
@@ -417,7 +584,7 @@ class Emprunt(models.Model):
         ordering = ['-date_emprunt']
 
 
-class Game(models.Model):
+class OldGame(models.Model):
     DURATIONS = (
         ('-1h', '-1h'),
         ('1-2h', '1-2h'),
@@ -426,7 +593,7 @@ class Game(models.Model):
         ('4h+', '4h+'),
     )
 
-    name = models.CharField(
+    title = models.CharField(
         max_length=255,
         verbose_name=_("name"),
     )
@@ -455,9 +622,50 @@ class Game(models.Model):
     )
 
     def __str__(self):
-        return str(self.name)
+        return str(self.title)
 
     class Meta:
         verbose_name = _("game")
         verbose_name_plural = _("games")
-        ordering = ['name']
+        ordering = ['title']
+
+
+class Game(Borrowable):
+    DURATIONS = (
+        ('-1h', '-1h'),
+        ('1-2h', '1-2h'),
+        ('2-3h', '2-3h'),
+        ('3-4h', '3-4h'),
+        ('4h+', '4h+'),
+    )
+    owner = models.ForeignKey(
+        'users.User',
+        on_delete=models.PROTECT,
+        verbose_name=_("owner"),
+    )
+    duration = models.CharField(
+        choices=DURATIONS,
+        max_length=255,
+        verbose_name=_("duration"),
+    )
+    players_min = models.IntegerField(
+        validators=[MinValueValidator(1)],
+        verbose_name=_("minimum number of players"),
+    )
+    players_max = models.IntegerField(
+        validators=[MinValueValidator(1)],
+        verbose_name=_('maximum number of players'),
+    )
+    comment = models.CharField(
+        max_length=255,
+        blank=True,
+        verbose_name=_('comment'),
+    )
+
+    def __str__(self):
+        return str(self.title)
+
+    class Meta:
+        verbose_name = _("game")
+        verbose_name_plural = _("games")
+        ordering = ['title']
diff --git a/media/templates/media/find_medium.html b/media/templates/media/find_medium.html
index 1a79e2e..1ee7e4b 100644
--- a/media/templates/media/find_medium.html
+++ b/media/templates/media/find_medium.html
@@ -36,22 +36,22 @@
         document.getElementById("isbn").focus();
 
         let bd_request = new XMLHttpRequest();
-        bd_request.open('GET', '/api/media/bd/?search=' + isbn, true);
+        bd_request.open('GET', '/api/media/comic/?search=' + isbn, true);
         bd_request.onload = function () {
             let data = JSON.parse(this.response);
-            data.results.forEach(bd => {
-                let present = bd.present;
-                if (markAsPresent && isbn === bd.isbn) {
+            data.results.forEach(comic => {
+                let present = comic.present;
+                if (markAsPresent && isbn === comic.isbn) {
                     present = true;
                     let presentRequest = new XMLHttpRequest();
-                    presentRequest.open("GET", "/media/mark-as-present/bd/" + bd.id + "/", true);
+                    presentRequest.open("GET", "/media/mark-as-present/bd/" + comic.id + "/", true);
                     presentRequest.send();
                 }
-                result_div.innerHTML += "<li id='bd_" + bd.id + "'>" +
-                    "<a href='/database/media/bd/" + bd.id + "/change/'>BD : "
-                    + bd.title + (bd.subtitle ? " - " + bd.subtitle : "") + "</a>"
-                    + (present ? " (<a class='absent' href='#' onclick=\"markAsPresent('bd', " + bd.id + ", false)\">marquer comme absent</a>)"
-                        : " (absent, <a class='present' href='#' onclick=\"markAsPresent('bd', " + bd.id + ")\">marquer comme présent</a>)") + "</li>";
+                result_div.innerHTML += "<li id='comic_" + comic.id + "'>" +
+                    "<a href='/database/media/comic/" + comic.id + "/change/'>BD : "
+                    + comic.title + (comic.subtitle ? " - " + comic.subtitle : "") + "</a>"
+                    + (present ? " (<a class='absent' href='#' onclick=\"markAsPresent('bd', " + comic.id + ", false)\">marquer comme absent</a>)"
+                        : " (absent, <a class='present' href='#' onclick=\"markAsPresent('bd', " + comic.id + ")\">marquer comme présent</a>)") + "</li>";
             });
         }
         bd_request.send();
@@ -92,35 +92,35 @@
         cd_request.send();
 
         let vinyle_request = new XMLHttpRequest();
-        vinyle_request.open('GET', '/api/media/vinyle/?search=' + isbn, true);
+        vinyle_request.open('GET', '/api/media/vinyl/?search=' + isbn, true);
         vinyle_request.onload = function () {
             let data = JSON.parse(this.response);
-            data.results.forEach(vinyle => {
-                let present = markAsPresent || vinyle.present;
-                result_div.innerHTML += "<li id='vinyle_" + vinyle.id + "'>" +
-                    "<a href='/database/media/vinyle/" + vinyle.id + "/change/'>Vinyle : " + vinyle.title + "</a>"
-                    + (present ? " (<a class='absent' href='#' onclick=\"markAsPresent('vinyle', " + vinyle.id + ", false)\">marquer comme absent</a>)"
-                        : " (absent, <a class='present' href='#' onclick=\"markAsPresent('vinyle', " + vinyle.id + ")\">marquer comme présent</a>)") + "</li>";
+            data.results.forEach(vinyl => {
+                let present = markAsPresent || vinyl.present;
+                result_div.innerHTML += "<li id='vinyl_" + vinyl.id + "'>" +
+                    "<a href='/database/media/vinyl/" + vinyl.id + "/change/'>Vinyle : " + vinyl.title + "</a>"
+                    + (present ? " (<a class='absent' href='#' onclick=\"markAsPresent('vinyl', " + vinyl.id + ", false)\">marquer comme absent</a>)"
+                        : " (absent, <a class='present' href='#' onclick=\"markAsPresent('vinyl', " + vinyl.id + ")\">marquer comme présent</a>)") + "</li>";
             });
         }
         vinyle_request.send();
 
         let roman_request = new XMLHttpRequest();
-        roman_request.open('GET', '/api/media/roman/?search=' + isbn, true);
+        roman_request.open('GET', '/api/media/novel/?search=' + isbn, true);
         roman_request.onload = function () {
             let data = JSON.parse(this.response);
-            data.results.forEach(roman => {
-                let present = roman.present;
-                if (markAsPresent && isbn === roman.isbn) {
+            data.results.forEach(novel => {
+                let present = novel.present;
+                if (markAsPresent && isbn === novel.isbn) {
                     present = true;
                     let presentRequest = new XMLHttpRequest();
-                    presentRequest.open("GET", "/media/mark-as-present/roman/" + roman.id + "/", true);
+                    presentRequest.open("GET", "/media/mark-as-present/novel/" + novel.id + "/", true);
                     presentRequest.send();
                 }
-                result_div.innerHTML += "<li id='roman_" + roman.id + "'>" +
-                    "<a href='/database/media/roman/" + roman.id + "/change/'>Roman : " + roman.title + "</a>"
-                    + (present ? " (<a class='absent' href='#' onclick=\"markAsPresent('roman', " + roman.id + ", false)\">marquer comme absent</a>)"
-                        : " (absent, <a class='present' href='#' onclick=\"markAsPresent('roman', " + roman.id + ")\">marquer comme présent</a>)") + "</li>";
+                result_div.innerHTML += "<li id='roman_" + novel.id + "'>" +
+                    "<a href='/database/media/roman/" + novel.id + "/change/'>Roman : " + novel.title + "</a>"
+                    + (present ? " (<a class='absent' href='#' onclick=\"markAsPresent('novel', " + novel.id + ", false)\">marquer comme absent</a>)"
+                        : " (absent, <a class='present' href='#' onclick=\"markAsPresent('novel', " + novel.id + ")\">marquer comme présent</a>)") + "</li>";
             });
         }
         roman_request.send();
diff --git a/media/urls.py b/media/urls.py
index d11bbce..261d559 100644
--- a/media/urls.py
+++ b/media/urls.py
@@ -12,7 +12,7 @@ urlpatterns = [
     url(r'^retour_emprunt/(?P<empruntid>[0-9]+)$', views.retour_emprunt,
         name='retour-emprunt'),
     path('find/', views.FindMediumView.as_view(), name="find"),
-    path('mark-as-present/bd/<int:pk>/',
+    path('mark-as-present/comic/<int:pk>/',
          views.MarkComicAsPresent.as_view(),
          name="mark_comic_as_present"),
     path('mark-as-present/manga/<int:pk>/',
@@ -21,15 +21,15 @@ urlpatterns = [
     path('mark-as-present/cd/<int:pk>/',
          views.MarkCDAsPresent.as_view(),
          name="mark_cd_as_present"),
-    path('mark-as-present/vinyle/<int:pk>/',
+    path('mark-as-present/vinyl/<int:pk>/',
          views.MarkVinylAsPresent.as_view(),
          name="mark_vinyle_as_present"),
-    path('mark-as-present/roman/<int:pk>/',
-         views.MarkRomanAsPresent.as_view(),
-         name="mark_roman_as_present"),
-    path('mark-as-present/revue/<int:pk>/',
-         views.MarkRevueAsPresent.as_view(),
-         name="mark_revue_as_present"),
+    path('mark-as-present/novel/<int:pk>/',
+         views.MarkNovelAsPresent.as_view(),
+         name="mark_novel_as_present"),
+    path('mark-as-present/review/<int:pk>/',
+         views.MarkReviewAsPresent.as_view(),
+         name="mark_review_as_present"),
     path('mark-as-present/future/<int:pk>/',
          views.MarkFutureAsPresent.as_view(),
          name="mark_future_as_present"),
diff --git a/media/views.py b/media/views.py
index 08370c3..bd0e2f4 100644
--- a/media/views.py
+++ b/media/views.py
@@ -81,11 +81,11 @@ class MarkVinylAsPresent(MarkMediumAsPresent):
     model = Vinyl
 
 
-class MarkRomanAsPresent(MarkMediumAsPresent):
+class MarkNovelAsPresent(MarkMediumAsPresent):
     model = Novel
 
 
-class MarkRevueAsPresent(MarkMediumAsPresent):
+class MarkReviewAsPresent(MarkMediumAsPresent):
     model = Review
 
 
diff --git a/requirements.txt b/requirements.txt
index 3c3b10a..7f2237e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 docutils~=0.16  # for Django-admin docs
 Django~=2.2
 django-filter~=2.4
+django-polymorphic~=3.0
 django-reversion~=3.0
 djangorestframework~=3.12
 django_extensions~=3.0