feat(qrcode): Automatic generation of qrcodes

default.nix

@@ -38,6 +38,9 @@ in
         ps.markdown-icons
         ps.authens
 
+        ps.qrcode
+        ps.pillow
+
         # Django haystack is drunk
         ps.setuptools
       ]))

inventory/templates/inventory/game.html

@@ -30,6 +30,11 @@
   <a class="button" href="{% url "inventory:game_loan" game.slug %}">
 	Emprunter ou rendre « {{ game.title }} »
   </a>
+  {% if user.is_staff %}
+  <a class="button" href="{% url "inventory:qrcode_borrow" game.slug %}">
+	Générer un QR-code
+  </a>
+  {% endif %}
 
   <h2 id="description">Description</h2>
   {{ object.description|linebreaks }}

inventory/urls.py

@@ -1,21 +1,10 @@
 from django.urls import path
-from .views import (
-    InventoryView,
-    CategoryListView,
-    CategoryView,
-    TagListView,
-    TagView,
-    GameListView,
-    GameView,
-    AddGameCommentView,
-    ModifyGameCommentView,
-    InventorySearchView,
-    GameLoanView,
-    BorrowGameView,
-    ReturnGameView,
-    OngoingLoansView,
-    DetailLoanView,
-)
+
+from .views import (AddGameCommentView, BorrowGameView, CategoryListView,
+                    CategoryView, DetailLoanView, GameListView, GameLoanView,
+                    GameView, InventorySearchView, InventoryView,
+                    ModifyGameCommentView, OngoingLoansView, QrCodeView,
+                    ReturnGameView, TagListView, TagView)
 
 app_name = "inventory"
 
@@ -39,6 +28,11 @@ urlpatterns = [
     path("loans/game/<slug>/", GameLoanView.as_view(), name="game_loan"),
     path("loans/return/<slug>/", ReturnGameView.as_view(), name="return_game"),
     path("loans/borrow/<slug>/", BorrowGameView.as_view(), name="borrow_game"),
+    path(
+        "qrcode/borrow/<slug>/",
+        QrCodeView.as_view(url="inventory:borrow_game"),
+        name="qrcode_borrow",
+    ),
     path("loans/ongoing/", OngoingLoansView.as_view(), name="ongoing_loans"),
     path("loans/all/", DetailLoanView.as_view(), name="all_loans"),
 ]

inventory/views.py

@@ -1,13 +1,17 @@
-from django.views.generic import TemplateView, ListView, DetailView
-from django.contrib.auth.mixins import PermissionRequiredMixin
-from haystack.generic_views import SearchView
-from haystack.forms import SearchForm
-from haystack.query import SearchQuerySet
-from django_tables2.views import SingleTableView
+import qrcode
 from comments.views import AddCommentView, ModifyCommentView
-from loans.views import BorrowView, ReturnView, DetailLoanView
-from .models import Category, Tag, Game, GameComment, GameLoan
+from django.contrib.auth.mixins import PermissionRequiredMixin
+from django.http import HttpResponse
+from django.urls import reverse
+from django.views.generic import DetailView, ListView, TemplateView
+from django_tables2.views import SingleTableView
+from haystack.forms import SearchForm
+from haystack.generic_views import SearchView
+from haystack.query import SearchQuerySet
+from loans.views import BorrowView, DetailLoanView, ReturnView
+
 from .forms import BorrowGameForm
+from .models import Category, Game, GameComment, GameLoan, Tag
 from .tables import LoanTable, OngoingLoansTable
 
 
@@ -102,3 +106,13 @@ class DetailLoanView(PermissionRequiredMixin, SingleTableView):
     table_class = LoanTable
     template_name = "inventory/loans/loans_table.html"
 
+
+class QrCodeView(DetailView):
+    model = Game
+    url = "inventory:game"  # Sensible default
+
+    def get(self, request, *args, **kwargs):
+        response = HttpResponse(content_type="image/png")
+        img = qrcode.make(reverse(self.url, kwargs={"slug": self.get_object().slug}))
+        img.save(response, "PNG")
+        return response

requirements.txt

@@ -7,5 +7,6 @@ django-markdownx==4.0.5
 django-tables2==2.7.0
 markdown-iconfonts==3.0.0
 Pillow==10.1.0
+qrcode>=7.4.2
 Whoosh==2.7.4
 loadcredential==1.1