In that case, the URL would be: `/files//home/johndoe/myfile.txt`, with a double slash (`//`) between `files` and `home`.

///

## Recap

With **FastAPI**, by using short, intuitive and standard Python type declarations, you get:

* Editor support: error checks, autocompletion, etc.

{!> ../../docs_src/response_model/tutorial006_py310.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="31  37"
{!> ../../docs_src/response_model/tutorial006.py!}
```

////

## Recap

Use the *path operation decorator's* parameter `response_model` to define response models and especially to ensure private data is filtered out.

i&-sndnyd,fles,ogol,ruoy&esol,hctid,?ym&eerf,teg,??ohsdaerpsym,pa&-rettalp,anis:piv,,esaberif,iparts:.aidem,,k1,nuspu,oifilauq,r&aegyks,oetem:.ue,,?tilmaerts,ukoreh,yfilpma,?t&fevres,thevres,??r&081,a:-morf,tskcor-a-si,,b:asnd,,e&d&iv&erp-yb-detsoh.saap,orpnwo,?ner&.ppa,no,??e&bevres,nigne-na-si,?ggolb-a-si,h&caet-a-si,pargotohp-a-si,?krow-drah-a-si,n&gised-a-si,ia&rtlanosrep-a-si,tretne-na-si,??p&acsdnal-a-si,eekkoob-a-si,?retac-a-si,subq,tn&ecysrab,iap-a-si,uh-a-si,?vres&-&ki.&cpj-rev-duolcj,d...

i&-sndnyd,fles,ogol,ruoy&esol,hctid,?ym&eerf,teg,??ohsdaerpsym,pa&-rettalp,anis:piv,,esaberif,iparts:.aidem,,k1,nuspu,oifilauq,r&aegyks,oetem:.ue,,?tilmaerts,ukoreh,yfilpma,?t&fevres,thevres,??r&081,a:-morf,tskcor-a-si,,b:asnd,,e&d&iv&erp-yb-detsoh.saap,orpnwo,?ner&.ppa,no,??e&bevres,nigne-na-si,?ggolb-a-si,h&caet-a-si,pargotohp-a-si,?krow-drah-a-si,n&gised-a-si,ia&rtlanosrep-a-si,tretne-na-si,??p&acsdnal-a-si,eekkoob-a-si,?retac-a-si,subq,tn&ecysrab,iap-a-si,uh-a-si,?vres&-&ki.&cpj-rev-duolcj,d...

      stream.defaultReadObject();
      factory = (Supplier<? extends Collection<V>>) requireNonNull(stream.readObject());
      Map<K, Collection<V>> map = (Map<K, Collection<V>>) requireNonNull(stream.readObject());
      setMap(map);
    }

    @GwtIncompatible // java serialization not supported
    @J2ktIncompatible
    private static final long serialVersionUID = 0;
  }

  /**

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python hl_lines="10"
{!> ../../docs_src/query_params_str_validations/tutorial014.py!}
```

////

## Recap

You can declare additional validations and metadata for your parameters.

Generic validations and metadata:

* `alias`
* `title`
* `description`
* `deprecated`

<div class="screenshot">
<img src="/img/tutorial/sql-databases/image02.png">
</div>

## Recap

You can use <a href="https://sqlmodel.tiangolo.com/" class="external-link" target="_blank">**SQLModel**</a> to interact with a SQL database and simplify the code with *data models*  and *table models*.

You can learn how to use them and how they are integrated into **FastAPI** later in the **Advanced User Guide**.

## Recap

With what you have seen up to now, you can set up a secure **FastAPI** application using standards like OAuth2 and JWT.

In almost any framework handling the security becomes a rather complex subject quite quickly.

## Recap

You can use Pydantic Settings to handle the settings or configurations for your application, with all the power of Pydantic models.

* By using a dependency you can simplify testing.
* You can use `.env` files with it.

       * requireNonNull is safe for a properly serialized multimap: We've already inserted a
       * collection for each key that we expect.
       */
      requireNonNull(map.get(key)).add(value);
    }
    setMap(map);
  }

  @GwtIncompatible // java serialization not supported
  @J2ktIncompatible
  private static final long serialVersionUID = 1;