fromJson static method

GemTransactionSchema? fromJson(dynamic value)

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

Implementation

// ignore: prefer_constructors_over_static_methods
static GemTransactionSchema? 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(() {
      assert(json.containsKey(r'type'),
          'Required key "GemTransactionSchema[type]" is missing from JSON.');
      assert(json[r'type'] != null,
          'Required key "GemTransactionSchema[type]" has a null value in JSON.');
      assert(json.containsKey(r'gems'),
          'Required key "GemTransactionSchema[gems]" is missing from JSON.');
      assert(json[r'gems'] != null,
          'Required key "GemTransactionSchema[gems]" has a null value in JSON.');
      assert(json.containsKey(r'description'),
          'Required key "GemTransactionSchema[description]" is missing from JSON.');
      assert(json[r'description'] != null,
          'Required key "GemTransactionSchema[description]" has a null value in JSON.');
      assert(json.containsKey(r'metadata'),
          'Required key "GemTransactionSchema[metadata]" is missing from JSON.');
      assert(json[r'metadata'] != null,
          'Required key "GemTransactionSchema[metadata]" has a null value in JSON.');
      assert(json.containsKey(r'created_at'),
          'Required key "GemTransactionSchema[created_at]" is missing from JSON.');
      assert(json[r'created_at'] != null,
          'Required key "GemTransactionSchema[created_at]" has a null value in JSON.');
      return true;
    }());

    return GemTransactionSchema(
      type: mapValueOfType<String>(json, r'type')!,
      gems: mapValueOfType<int>(json, r'gems')!,
      description: mapValueOfType<String>(json, r'description')!,
      metadata: mapCastOfType<String, Object>(json, r'metadata')!,
      createdAt: mapDateTime(json, r'created_at', r'')!,
    );
  }
  return null;
}