validateValue method

EntityFieldInvalid? validateValue(Object? value, { String? fieldName, Type? entityType, })

Returns a EntityFieldInvalid if value is invalid for this EntityField configuration.

Implementation

EntityFieldInvalid? validateValue(
  Object? value, {
  String? fieldName,
  Type? entityType,
}) {
  var validator = this.validator;
  if (validator != null) {
    if (!validator(value)) {
      return EntityFieldInvalid(
        'validator',
        value,
        fieldName: fieldName,
        entityType: entityType,
      );
    }
  }

  var regexp = this.regexp;
  if (regexp != null) {
    var s = value == null ? '' : value.toString();

    var re = RegExp(regexp, dotAll: true);
    var valid = re.hasMatch(s);

    if (!valid) {
      return EntityFieldInvalid(
        'regexp(${re.pattern})',
        value,
        entityType: entityType,
        fieldName: fieldName,
      );
    }
  }

  if (value != null) {
    var maximum = this.maximum;

    if (maximum != null) {
      var invalid = false;
      String? valueStr;

      if (value is num) {
        if (value > maximum) invalid = true;
      } else if (value is BigInt) {
        if (value > maximum.toBigInt()) invalid = true;
      } else if (value is DynamicNumber) {
        if (value > maximum.toDynamicNumber()) invalid = true;
      } else if (value is String) {
        if (value.length > maximum) invalid = true;
      } else if (value is Iterable) {
        if (value.length > maximum) {
          invalid = true;
          valueStr = '${value.runtimeTypeNameUnsafe}{length: ${value.length}';
        }
      }

      if (invalid) {
        valueStr ??= '$value';
        return EntityFieldInvalid(
          'maximum($maximum)',
          value,
          entityType: entityType,
          fieldName: fieldName,
        );
      }
    }

    var minimum = this.minimum;
    if (minimum != null) {
      var invalid = false;
      String? valueStr;

      if (value is num) {
        if (value < minimum) invalid = true;
      } else if (value is BigInt) {
        if (value < minimum.toBigInt()) invalid = true;
      } else if (value is DynamicNumber) {
        if (value < minimum.toDynamicNumber()) invalid = true;
      } else if (value is String) {
        if (value.length < minimum) invalid = true;
      } else if (value is Iterable) {
        if (value.length < minimum) {
          invalid = true;
          valueStr = '${value.runtimeTypeNameUnsafe}{length: ${value.length}';
        }
      }

      if (invalid) {
        valueStr ??= '$value';
        return EntityFieldInvalid(
          'minimum($minimum)',
          value,
          entityType: entityType,
          fieldName: fieldName,
        );
      }
    }
  }

  return null;
}