Function computeChildLabel

packages/core/src/mappers/renderer.ts:1353–1418

(
  data: any,
  childPath: string,
  childLabelProp: string,
  schema: JsonSchema,
  rootSchema: JsonSchema,
  translateFct: Translator,
  uiSchema: UISchemaElement
)

 * @param {UISchemaElement} uiSchema the uiSchema of the control
 */
export const computeChildLabel = (
  data: any,
  childPath: string,
  childLabelProp: string,
  schema: JsonSchema,
  rootSchema: JsonSchema,
  translateFct: Translator,
  uiSchema: UISchemaElement
): string => {
  const childData = Resolve.data(data, childPath);

  if (!childLabelProp) {
    childLabelProp = getFirstPrimitiveProp(schema);
  }

  // return early in case there is no prop we can query
  if (!childLabelProp) {
    return '';
  }

  const currentValue = get(childData, childLabelProp);

  // in case there is no value, then we can't map it to an enum or oneOf
  if (currentValue === undefined) {
    return '';
  }

  // check whether the value is part of a oneOf or enum and needs to be translated
  const childSchema = Resolve.schema(
    schema,
    '#' + getPropPath(childLabelProp),
    rootSchema
  );

  let enumOption: EnumOption = undefined;
  if (isEnumSchema(childSchema)) {
    enumOption = enumToEnumOptionMapper(
      currentValue,
      translateFct,
      getI18nKeyPrefix(
        childSchema,
        findUiControl(uiSchema, childLabelProp),
        childPath + '.' + childLabelProp
      )
    );
  } else if (isOneOfEnumSchema(childSchema)) {
    const oneOfArray = childSchema.oneOf as JsonSchema[];
    const oneOfSchema = oneOfArray.find((e: JsonSchema) =>
      isEqual(e.const, currentValue)
    );

    if (oneOfSchema) {
      enumOption = oneOfToEnumOptionMapper(
        oneOfSchema,
        translateFct,
        getI18nKeyPrefix(
          oneOfSchema,
          undefined,