Joi：无法更改可选数组的错误消息，如果有项目，它们不能是空字符串

Question

我有一个需要描述的项目表格，如果他们想添加详细信息，则需要填写这些文本区域。但如果没有添加任何细节也没关系。因此，如果他们想添加详细信息，则必须填充该文本区域。但允许使用空数组。

我在覆盖缺少详细信息的默认错误时遇到问题，默认为“details[0]”不能是稀疏数组。

架构：

const descriptionDetailSchema = Joi.object({ 
  description: Joi.string().required().messages({
    'string.base': 'Description is required',
    'string.empty': 'Description is required'
  }),
  details: Joi.array().items(
    Joi.string().messages({
      'string.empty': 'Detail is required'
    })
  )
});

const DescriptionAndDetailForm = forwardRef(
  ({ activityIndex, item, index, saveDescription, setFormValid }, ref) => {
    DescriptionAndDetailForm.displayName = 'DescriptionAndDetailForm';
    const {
      handleSubmit,
      control,
      formState: { error, errors, isValid, isValidating },
      getValues
    } = useForm({
      defaultValues: {
        description: item.description,
        details: item.details
      },
      mode: 'onBlur',
      reValidateMode: 'onBlur',
      resolver: joiResolver(descriptionDetailSchema)
    });

    useEffect(() => {
      console.log('isValid changed');
      console.log({ errors, isValid, isValidating });
      setFormValid(isValid);
    }, [isValid]);

    useEffect(() => {
      console.log('errors changed');
      console.log({ errors, isValid, isValidating });
    }, [errors]);

    useEffect(() => {
      console.log('isValidating changed');
      const { error, value } = descriptionDetailSchema.validate(getValues());
      console.log({ error, value, errors, isValid, isValidating });
    }, [isValidating, errors]);

    const initialState = item;

    function reducer(state, action) {
      switch (action.type) {
        case 'updateField':
          return {
            ...state,
            [action.field]: action.value
          };
        case 'addDetail': {
          const newDetail = newDescriptionDetail();
          return {
            ...state,
            details: [...state.details, newDetail]
          };
        }
        case 'removeDetail': {
          const detailsCopy = [...state.details];
          detailsCopy.splice(action.index, 1);
          return {
            ...state,
            details: detailsCopy
          };
        }
        case 'updateDetails': {
          const detailsCopy = [...state.details];
          detailsCopy[action.detailIndex].detail = action.value;

          return {
            ...state,
            details: detailsCopy
          };
        }
        default:
          throw new Error(
            'Unrecognized action type provided to DescriptionAndDetailForm reducer'
          );
      }
    }

    const [state, dispatch] = useReducer(reducer, initialState);

    const handleDescriptionChange = e => {
      dispatch({
        type: 'updateField',
        field: 'description',
        value: e.target.value
      });
    };

    const onSubmit = e => {
      e.preventDefault();
      saveDescription(activityIndex, index, state);
      handleSubmit(e);
    };

    const handleAddDetail = () => {
      dispatch({ type: 'addDetail' });
    };

    const handleDeleteDetail = (descriptionIndex, detailIndex) => {
      dispatch({ type: 'removeDetail', index: detailIndex });
    };

    const handleDetailChange = (e, i) => {
      dispatch({
        type: 'updateDetails',
        detailIndex: i,
        value: e.target.value
      });
    };

    return (
      <form
        index={index}
        key={`activity${activityIndex}-index${index}-form`}
        onSubmit={onSubmit}
      >
        <Controller
          key={`activity${activityIndex}-index${index}`}
          name="description"
          control={control}
          render={({ field: { onChange, ...props } }) => (
            <TextField
              {...props}
              label="Description"
              multiline
              rows="4"
              onChange={e => {
                handleDescriptionChange(e);
                onChange(e);
              }}
              errorMessage={errors?.description?.message}
              errorPlacement="bottom"
            />
          )}
        />
        {state.details.map(({ key, detail }, i) => (
          <Review
            key={key}
            onDeleteClick={ () => handleDeleteDetail(index, i) }
            onDeleteLabel="Remove"
            skipConfirmation
            ariaLabel={`${i + 1}. ${detail}`}
            objType="Detail"
          >
            <div>
              <Controller
                name={`details.${i}`}
                control={control}
                render={({ field: { onChange, ...props } }) => (
                  <TextField
                    {...props}
                    id={`${activityIndex}-detail${i}`}
                    name={`details.${i}`}
                    label="Detail"
                    value={detail}
                    multiline
                    rows="4"
                    onChange={e => {
                      handleDetailChange(e, i);
                      onChange(e);
                    }}
                    errorMessage={errors?.details && errors?.details[i]?.message}
                    errorPlacement="bottom"
                  />
                )}
              />
            </div>
          </Review>
        ))}
        <div>
          <Button
            key={`activity${activityIndex}-index${index}-add-metric`}
            onClick={handleAddDetail}
          >
            <Icon icon={faPlusCircle} />
            Add Detail
          </Button>
        </div>
        <input
          type="submit"
          ref={ref}
          hidden
        />
      </form>
    );
  }
);

Answer 1

如果您使用 .custom() 进行验证，您需要确保您的模式返回一个值