✨ Add ReDoc parameters support

5 months ago · 1caa0ecc39
2 changed files with 32 additions and 2 deletions
--- a/fastapi/applications.py
+++ b/fastapi/applications.py
@ -444,6 +444,18 @@ class FastAPI(Starlette):
                """
            ),
        ] = "/redoc",
+        redoc_ui_parameters: Annotated[
+            Optional[Dict[str, Any]],
+            Doc(
+                """
+                Parameters to configure ReDoc documentation (by default at `/docs`).
+                Use kebab-case for [parameters](https://redocly.com/docs/redoc/config).
+
+                Read more about it in the
+                [FastAPI docs for Metadata and Docs URLs](https://fastapi.tiangolo.com/tutorial/metadata/#docs-urls).
+                """
+            ),
+        ] = None,
        swagger_ui_oauth2_redirect_url: Annotated[
            Optional[str],
            Doc(
@ -833,6 +845,7 @@ class FastAPI(Starlette):
        self.root_path_in_servers = root_path_in_servers
        self.docs_url = docs_url
        self.redoc_url = redoc_url
+        self.redoc_ui_parameters = redoc_ui_parameters
        self.swagger_ui_oauth2_redirect_url = swagger_ui_oauth2_redirect_url
        self.swagger_ui_init_oauth = swagger_ui_init_oauth
        self.swagger_ui_parameters = swagger_ui_parameters
@ -1043,7 +1056,9 @@ class FastAPI(Starlette):
                root_path = req.scope.get("root_path", "").rstrip("/")
                openapi_url = root_path + self.openapi_url
                return get_redoc_html(
-                    openapi_url=openapi_url, title=f"{self.title} - ReDoc"
+                    openapi_url=openapi_url,
+                    title=f"{self.title} - ReDoc",
+                    redoc_ui_parameters=self.redoc_ui_parameters,
                )

            self.add_route(self.redoc_url, redoc_html, include_in_schema=False)
--- a/fastapi/openapi/docs.py
+++ b/fastapi/openapi/docs.py
@ -205,6 +205,16 @@ def get_redoc_html(
            """
        ),
    ] = True,
+    redoc_ui_parameters: Annotated[
+        Optional[Dict[str, Any]],
+        Doc(
+            """
+            Configuration parameters for ReDoc
+
+            It defaults to None.
+            """
+        ),
+    ] = None,
 ) -> HTMLResponse:
    """
    Generate and return the HTML response that loads ReDoc for the alternative
@ -216,6 +226,11 @@ def get_redoc_html(
    Read more about it in the
    [FastAPI docs for Custom Docs UI Static Assets (Self-Hosting)](https://fastapi.tiangolo.com/how-to/custom-docs-ui-assets/).
    """
+    config_string = ""
+    if redoc_ui_parameters:
+        for key, value in redoc_ui_parameters.items():
+            config_string += f" {key}={value}"
+
    html = f"""
    <!DOCTYPE html>
    <html>
@ -245,7 +260,7 @@ def get_redoc_html(
    <noscript>
        ReDoc requires Javascript to function. Please enable it to browse the documentation.
    </noscript>
-    <redoc spec-url="{openapi_url}"></redoc>
+    <redoc spec-url="{openapi_url}"{config_string}></redoc>
    <script src="{redoc_js_url}"> </script>
    </body>
    </html>