public HtmlResponse index() {
        return asListHtml();
    }

    /**
     * Show the list page.
     * @param pageNumber The page number.
     * @param form The search form.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse list(final OptionalThing<Integer> pageNumber, final SearchForm form) {
        pageNumber.ifPresent(num -> {

Maar standaard werkt alles **“gewoon”**.

### Validatie

* Validatie voor de meeste (of misschien wel alle?) Python **datatypes**, inclusief:
    * JSON objecten (`dict`).
    * JSON array (`list`) die itemtypes definiëren.
    * String (`str`) velden, die min en max lengtes hebben.
    * Getallen (`int`, `float`) met min en max waarden, enz.

* Validatie voor meer exotische typen, zoals:
    * URL.

            WebApiUtil.setObject("objectValue", new Object());

            // Test with collections
            java.util.List<String> list = java.util.Arrays.asList("item1", "item2");
            WebApiUtil.setObject("listValue", list);

            java.util.Map<String, String> map = new java.util.HashMap<>();
            map.put("key", "value");
            WebApiUtil.setObject("mapValue", map);

        String capturedSessionId;
        List<String> capturedCmdList;
        Map<String, String> capturedEnvironment;
        File capturedDirectory;
        int exitValue = 0;
        String processOutput = "Test output";
        RuntimeException throwException = null;

        @Override

    void testCollectionConfigurationDelegation() {
        // Given
        List<ResolverType> resolverOrder = Arrays.asList(ResolverType.RESOLVER_DNS, ResolverType.RESOLVER_WINS);
        when(mockDelegate.getResolveOrder()).thenReturn(resolverOrder);

        // When
        List<ResolverType> resultResolverOrder = delegatingConfig.getResolveOrder();

        // Then

# JSON Compatible Encoder

Hay algunos casos en los que podrías necesitar convertir un tipo de dato (como un modelo de Pydantic) a algo compatible con JSON (como un `dict`, `list`, etc).

Por ejemplo, si necesitas almacenarlo en una base de datos.

Para eso, **FastAPI** proporciona una función `jsonable_encoder()`.

## Usando el `jsonable_encoder`

Imaginemos que tienes una base de datos `fake_db` que solo recibe datos compatibles con JSON.

# (error on undefined variables). This ensures that (a) every TFCI variable
# has an explicit default value, and (b) no script can accidentally use a
# variable that doesn't exist. Please keep this list in alphabetical order.
#
# Find usage in scripts with e.g.:
#   cd ci/official
#   ls *.sh utilities/*.sh | xargs grep -H --color=always TFCI_ARG_HERE
# You may also get an overview, e.g.:
#   cd ci/official

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.dict.synonym;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.codelibs.fess.dict.DictionaryFile.PagingList;
import org.codelibs.fess.unit.UnitFessTestCase;

public class SynonymFileTest extends UnitFessTestCase {
    private SynonymFile synonymFile;

    // TODO

## Lista de modelos

Da mesma forma, você pode declarar respostas de listas de objetos.

Para isso, use o padrão Python `typing.List` (ou simplesmente `list` no Python 3.9 e superior):

{* ../../docs_src/extra_models/tutorial004.py hl[1,20] *}

## Resposta com `dict` arbitrário

## Список моделей

Таким же образом вы можете определять ответы как списки объектов.

Для этого используйте `typing.List` из стандартной библиотеки Python (или просто `list` в Python 3.9 и выше):

{* ../../docs_src/extra_models/tutorial004_py39.py hl[18] *}

## Ответ с произвольным `dict`