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📝 Refactor docs, "Tutorial - User Guide" and "Advanced User Guide" (#887)

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Sebastián Ramírez
2020-01-18 16:21:54 +01:00
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8
docs/tutorial/middleware.md
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@@ -25,17 +25,15 @@ The middleware function receives:
{!./src/middleware/tutorial001.py!}
```
!!! tip
This technique is used in the tutorial about <a href="https://fastapi.tiangolo.com/tutorial/sql-databases/" target="_blank">SQL (Relational) Databases</a>.
!!! tip
Have in mind that custom proprietary headers can be added <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">using the 'X-' prefix</a>.
But if you have custom headers that you want a client in a browser to be able to see, you need to add them to your <a href="https://fastapi.tiangolo.com/tutorial/cors/" target="_blank">CORS configurations</a>, using the parameter `expose_headers` documented in <a href="https://www.starlette.io/middleware/#corsmiddleware" class="external-link" target="_blank">Starlette's CORS docs</a>.
But if you have custom headers that you want a client in a browser to be able to see, you need to add them to your CORS configurations ([CORS (Cross-Origin Resource Sharing)
](cors.md){.internal-link target=_blank}) using the parameter `expose_headers` documented in <a href="https://www.starlette.io/middleware/#corsmiddleware" class="external-link" target="_blank">Starlette's CORS docs</a>.
### Before and after the `response`
You can add code to be run with the `request`, before any *path operation* receives it.
You can add code to be run with the `request`, before any *path operation* receives it.
And also after the `response` is generated, before returning it.