toJson method

String toJson()

Implementation

String toJson() {
  if (_map == null) {
    return jsonEncode({});
  }

  var __map = <String, dynamic>{};
  for (var entry in _map.entries) {
    if (entry.value is ObjectId)
      __map[entry.key] = (entry.value as ObjectId).toJsonOid();
    else if (entry.value is Map) {
      for (var entry2 in (entry.value as Map).entries) {
        __map[entry.key] = {};
        if (entry2.value is ObjectId) {
          __map[entry.key][entry2.key] =
              (entry2.value as ObjectId).toJsonOid();
        } else if (entry2.value is Map) {
          __map[entry.key][entry2.key] = {};
          for (var entry3 in (entry2.value as Map).entries) {
            if (entry3.value is ObjectId) {
              __map[entry.key][entry2.key][entry3.key] =
                  (entry3.value as ObjectId).toJsonOid();
            }
            if (entry3.value is List) {
              final list = (entry3.value as List);
              __map[entry.key][entry2.key][entry3.key] =
                  List.filled(list.length, Object());
              for (int index = 0; index < list.length; index++) {
                if (list[index] is ObjectId) {
                  __map[entry.key][entry2.key][entry3.key][index] =
                      (list[index].value as ObjectId).toJsonOid();
                } else {
                  __map[entry.key][entry2.key][entry3.key][index] =
                      list[index];
                }
              }
            } else {
              __map[entry.key][entry2.key][entry3.key] = entry3.value;
            }
          }
        } else {
          __map[entry.key][entry2.key] = entry2.value;
        }
      }
    } else {
      __map[entry.key] = entry.value;
    }
  }

  return jsonEncode(__map);
}