feat: enable media file handling and allow manual assignment of letter public_id

backend/config/settings.py

@@ -168,3 +168,5 @@ USE_TZ = True
 # https://docs.djangoproject.com/en/6.0/howto/static-files/
 
 STATIC_URL = "static/"
+MEDIA_URL = "/media/"
+MEDIA_ROOT = BASE_DIR / "media"

backend/config/urls.py

@@ -15,6 +15,8 @@ Including another URLconf
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
 
+from django.conf import settings
+from django.conf.urls.static import static
 from django.contrib import admin
 from django.urls import include, path
 
@@ -23,3 +25,6 @@ urlpatterns = [
     path("api/auth/", include("users.urls")),  # user related operations
     path("api/letters/", include("letters.urls")),  # letter related operations
 ]
+
+if settings.DEBUG:
+    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

backend/letters/models.py

@@ -16,7 +16,7 @@ class Letter(models.Model):
         SEALED = "SEALED", "Sealed"
         BURNED = "BURNED", "Burned"
 
-    public_id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+    public_id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=True)
     user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="letters")
     type = models.CharField(max_length=10, choices=Type.choices, default=Type.KEPT)
     status = models.CharField(max_length=10, choices=Status.choices, default=Status.DRAFT)

backend/letters/serializers.py

@@ -30,7 +30,7 @@ class LetterSerializer(serializers.ModelSerializer):
             "updated_at",
             "images",
         ]  # user to be fetched from request
-        read_only_fields = ["public_id", "created_at", "updated_at"]
+        read_only_fields = ["created_at", "updated_at"]
 
     def validate(self, data):
         if (data.get("encrypted_content") or data.get("encrypted_metadata")) and not data.get("encrypted_dek"):