# Encodeur compatible JSON { #json-compatible-encoder }

Il existe des cas où vous pourriez avoir besoin de convertir un type de données (comme un modèle Pydantic) en quelque chose de compatible avec JSON (comme un `dict`, `list`, etc.).

Par exemple, si vous devez le stocker dans une base de données.

Pour cela, **FastAPI** fournit une fonction `jsonable_encoder()`.

## Utiliser `jsonable_encoder` { #using-the-jsonable-encoder }

Python tipleriyle çalışırken işinize yarayabilecek bazı ek fikirler.

## `Union` veya `Optional` Kullanımı { #using-union-or-optional }

Kodunuz herhangi bir nedenle `|` kullanamıyorsa — örneğin bir tip açıklamasında (type annotation) değil de `response_model=` gibi bir yerdeyse — dikey çizgi (`|`) yerine `typing` içindeki `Union`'ı kullanabilirsiniz.

Örneğin, bir şeyin `str` ya da `None` olabileceğini şöyle belirtebilirsiniz:

```python

package event

import (
	"encoding/json"
	"fmt"
	"strings"
)

// TargetID - holds identification and name strings of notification target.
type TargetID struct {
	ID   string
	Name string
}

// String - returns string representation.
func (tid TargetID) String() string {
	return tid.ID + ":" + tid.Name
}

// ToARN - converts to ARN.

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package replication

import (
	"encoding/xml"
)

// And - a tag to combine a prefix and multiple tags for replication configuration rule.
type And struct {
	XMLName xml.Name `xml:"And" json:"And"`
	Prefix  string   `xml:"Prefix,omitempty" json:"Prefix,omitempty"`
	Tags    []Tag    `xml:"Tag,omitempty" json:"Tag,omitempty"`
}

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package event

import "maps"

// TargetIDSet - Set representation of TargetIDs.
type TargetIDSet map[TargetID]struct{}

// IsEmpty returns true if the set is empty.
func (set TargetIDSet) IsEmpty() bool {
	return len(set) != 0
}

// Clone - returns copy of this set.

                                    </div>
                                    <div class="form-group row">
                                        <div class="offset-sm-2 col-sm-10">
                                            <button type="submit" class="btn btn-primary" id="submit"
                                                    name="search"
                                                    value="<la:message key="labels.crud_button_search" />">

      var docId = values[1];
      var actionUrl = contextPath + "/api/v1/documents/" + docId + "/favorite";

      $.ajax({
        dataType: "json",
        cache: false,
        type: "post",
        timeout: AJAX_TIMEOUT,
        url: actionUrl,
        data: {
          queryId: $queryId.val()
        }
      })
        .done(function(data) {
          if (data.result === "created") {

   * interface.
   */
  @Override
  Set<Entry<K, V>> entries();

  /**
   * {@inheritDoc}
   *
   * <p><b>Note:</b> The returned map's values are guaranteed to be of type {@link Set}. To obtain
   * this map with the more specific generic type {@code Map<K, Set<V>>}, call {@link
   * Multimaps#asMap(SetMultimap)} instead.
   */
  @Override
  Map<K, Collection<V>> asMap();

  /**

 * users should prefer the {@link Network} interface.
 *
 * @author James Sexton
 * @author Joshua O'Madadhain
 * @param <N> Node parameter type
 * @param <E> Edge parameter type
 * @since 20.0
 */
public interface MutableNetwork<N, E> extends Network<N, E> {

  /**
   * Adds {@code node} if it is not already present.
   *

 * which is in O(d_node) where d_node is the degree of {@code node}.
 *
 * @author James Sexton
 * @author Joshua O'Madadhain
 * @author Omar Darwish
 * @param <N> Node parameter type
 * @param <E> Edge parameter type
 */
final class StandardMutableNetwork<N, E> extends StandardNetwork<N, E>
    implements MutableNetwork<N, E> {

  /** Constructs a mutable graph with the properties specified in {@code builder}. */