background-color: rgba(220, 53, 69, 0.9);\n  border-radius: 0.25rem;\n}\n\n.form-row > .col > .invalid-tooltip,\n.form-row > [class*=\"col-\"] > .invalid-tooltip {\n  left: 5px;\n}\n\n.was-validated :invalid ~ .invalid-feedback,\n.was-validated :invalid ~ .invalid-tooltip,\n.is-invalid ~ .invalid-feedback,\n.is-invalid ~ .invalid-tooltip {\n  display: block;\n}\n\n.was-validated .form-control:invalid, .form-control.is-invalid {\n  border-color: #dc3545;\n  padding-right: 2.25rem !important;\n  background-image:...

        // timing of executing the interpolation

        try
        {
        new RegexBasedModelInterpolator().interpolate( model, context );
        fail( "Should have failed to interpolate with invalid reference" );
        }
        catch ( ModelInterpolationException expected )
        {
        assertTrue( true );
        }
        */

        ModelInterpolator interpolator = createInterpolator();

background-color: rgba(220, 53, 69, 0.9);\n  border-radius: 0.25rem;\n}\n\n.form-row > .col > .invalid-tooltip,\n.form-row > [class*=\"col-\"] > .invalid-tooltip {\n  left: 5px;\n}\n\n.was-validated :invalid ~ .invalid-feedback,\n.was-validated :invalid ~ .invalid-tooltip,\n.is-invalid ~ .invalid-feedback,\n.is-invalid ~ .invalid-tooltip {\n  display: block;\n}\n\n.was-validated .form-control:invalid, .form-control.is-invalid {\n  border-color: #dc3545;\n  padding-right: calc(1.5em + 0.75rem) !important;\n ...

   * physical end of the medium.)
   *
   * @since 8.0
   */
  public static final byte EM = 25;

  /**
   * Substitute: A character that may be substituted for a character which is determined to be
   * invalid or in error.
   *
   * @since 8.0
   */
  public static final byte SUB = 26;

  /**
   * Escape: A control character intended to provide code extension (supplementary characters) in

  optional string selectPolicy = 1;

  // policies is a list of potential scaling polices which can be used during scaling.
  // At least one policy must be specified, otherwise the HPAScalingRules will be discarded as invalid
  // +optional
  repeated HPAScalingPolicy policies = 2;
}

// HorizontalPodAutoscaler is the configuration for a horizontal pod
// autoscaler, which automatically manages the replica count of any resource

* **Convertir datos**: desde el request al tipo requerido.
* **Validar datos**: viniendo de cada request:
    * Generando **errores automáticos** devueltos al cliente cuando los datos son inválidos.
* **Documentar** la API usando OpenAPI:
    * que en su caso es usada por las interfaces de usuario de la documentación automática e interactiva.

```Python
q: str = Query(default=None, max_length=50)
```

Isso irá validar os dados, mostrar um erro claro quando os dados forem inválidos, e documentar o parâmetro na *operação de rota* do esquema OpenAPI..

## Adicionando mais validações

Você também pode incluir um parâmetro `min_length`:

```Python hl_lines="10"

					clauseSelect.Columns = append(clauseSelect.Columns, clause.Column{Table: db.Statement.Table, Name: dbName})
				}
			}
		} else if db.Statement.Schema != nil && db.Statement.ReflectValue.IsValid() {
			queryFields := db.QueryFields
			if !queryFields {
				switch db.Statement.ReflectValue.Kind() {
				case reflect.Struct:
					queryFields = db.Statement.ReflectValue.Type() != db.Statement.Schema.ModelType

   *
   * @since 12.0
   */
  void putAll(Map<? extends K, ? extends V> m);

  /** Discards any cached value for key {@code key}. */
  void invalidate(@CompatibleWith("K") Object key);

  /**
   * Discards any cached values for keys {@code keys}.
   *
   * @since 11.0
   */
  // For discussion of <? extends Object>, see getAllPresent.

line-height: 1.5;\n  color: #fff;\n  background-color: rgba(220, 53, 69, 0.9);\n  border-radius: 0.25rem;\n}\n\n.was-validated :invalid ~ .invalid-feedback,\n.was-validated :invalid ~ .invalid-tooltip,\n.is-invalid ~ .invalid-feedback,\n.is-invalid ~ .invalid-tooltip {\n  display: block;\n}\n\n.was-validated .form-control:invalid, .form-control.is-invalid {\n  border-color: #dc3545;\n  padding-right: calc(1.5em + 0.75rem);\n  background-image: url(\"data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg'...