fromJson static method

Transaction? fromJson(dynamic value)

Returns a new Transaction instance and imports its values from value if it's a Map, null otherwise.

Implementation

// ignore: prefer_constructors_over_static_methods
static Transaction? fromJson(dynamic value) {
  if (value is Map) {
    final json = value.cast<String, dynamic>();

    // Ensure that the map contains the required keys.
    // Note 1: the values aren't checked for validity beyond being non-null.
    // Note 2: this code is stripped in release mode!
    assert(() {
      requiredKeys.forEach((key) {
        assert(json.containsKey(key), 'Required key "Transaction[$key]" is missing from JSON.');
        assert(json[key] != null, 'Required key "Transaction[$key]" has a null value in JSON.');
      });
      return true;
    }());

    return Transaction(
      amount: mapValueOfType<int>(json, r'amount'),
      createdAt: mapValueOfType<String>(json, r'createdAt'),
      currency: mapValueOfType<String>(json, r'currency'),
      expiresAt: mapValueOfType<String>(json, r'expiresAt'),
      id: mapValueOfType<String>(json, r'id'),
      metadata: mapValueOfType<Object>(json, r'metadata'),
      notes: mapValueOfType<String>(json, r'notes'),
      tags: mapValueOfType<String>(json, r'tags'),
      type: mapValueOfType<String>(json, r'type'),
    );
  }
  return null;
}