✨ Add HTTPException with custom headers (#35)

* 📝 Update Release Notes with issue templates

* ✨ Add HTTPException with support for headers

Including docs and tests

* 📝 Update Security docs to use new HTTPException

fastapi/__init__.py

@@ -5,3 +5,4 @@ __version__ = "0.4.0"
 from .applications import FastAPI
 from .routing import APIRouter
 from .params import Body, Path, Query, Header, Cookie, Form, File, Security, Depends
+from .exceptions import HTTPException

fastapi/applications.py

@@ -13,7 +13,13 @@ from starlette.responses import JSONResponse, Response
 
 
 async def http_exception(request: Request, exc: HTTPException) -> JSONResponse:
-    return JSONResponse({"detail": exc.detail}, status_code=exc.status_code)
+    headers = getattr(exc, "headers", None)
+    if headers:
+        return JSONResponse(
+            {"detail": exc.detail}, status_code=exc.status_code, headers=headers
+        )
+    else:
+        return JSONResponse({"detail": exc.detail}, status_code=exc.status_code)
 
 
 class FastAPI(Starlette):

fastapi/exceptions.py

@@ -0,0 +1,9 @@
+from starlette.exceptions import HTTPException as StarletteHTTPException
+
+
+class HTTPException(StarletteHTTPException):
+    def __init__(
+        self, status_code: int, detail: str = None, headers: dict = None
+    ) -> None:
+        super().__init__(status_code=status_code, detail=detail)
+        self.headers = headers