🐛 Fix model-free apps and middleware installer

src/ohmyapi/core/runtime.py

@@ -342,9 +342,9 @@ class App:
         except ModuleNotFoundError:
             return
 
-        getter = getattr(mod, "get", None)
-        if getter is not None:
-            for middleware in getter():
+        installer = getattr(mod, "install", None)
+        if installer is not None:
+            for middleware in installer():
                 self._middlewares.append(middleware)
 
     def __serialize_route(self, route):
@@ -404,10 +404,15 @@ class App:
         """
         Convenience method for serializing the runtime data.
         """
+        # An app may come without any models
+        models = []
+        if f"{self.name}.models" in self._models:
+            models = [
+                f"{self.name}.{m.__name__}"
+                for m in self._models[f"{self.name}.models"]
+            ]
         return {
-            "models": [
-                f"{self.name}.{m.__name__}" for m in self._models[f"{self.name}.models"]
-            ],
+            "models": models,
             "middlewares": self.__serialize_middleware(),
             "routes": self.__serialize_router(),
         }

src/ohmyapi/middleware/cors.py

@@ -15,12 +15,12 @@ CORS_CONFIG: Dict[str, Any] = getattr(settings, "MIDDLEWARE_CORS", {})
 if not isinstance(CORS_CONFIG, dict):
     raise ValueError("MIDDLEWARE_CORS must be of type dict")
 
-middleware = [
-    (CORSMiddleware, {
+middleware = (
+    CORSMiddleware,
+    {
         "allow_origins": CORS_CONFIG.get("ALLOW_ORIGINS", DEFAULT_ORIGINS),
         "allow_credentials": CORS_CONFIG.get("ALLOW_CREDENTIALS", DEFAULT_CREDENTIALS),
         "allow_methods": CORS_CONFIG.get("ALLOW_METHODS", DEFAULT_METHODS),
         "allow_headers": CORS_CONFIG.get("ALLOW_HEADERS", DEFAULT_HEADERS),
-    }),
-]
-
+    }
+)