в процессе

lib/data/dtos/films_dto.dart

@@ -17,12 +17,14 @@ class FilmsDto {
 
 @JsonSerializable(createToJson: false)
 class FilmDataDto {
+  final int? kinopoiskId;
   final String nameRu;
   final int year;
   final List<GenreDto> genres;
   final String posterUrl;
 
   const FilmDataDto({
+    required this.kinopoiskId,
     required this.nameRu,
     required this.year,
     required this.genres,

lib/data/dtos/films_dto.g.dart

@@ -14,6 +14,7 @@ FilmsDto _$FilmsDtoFromJson(Map<String, dynamic> json) => FilmsDto(
     );
 
 FilmDataDto _$FilmDataDtoFromJson(Map<String, dynamic> json) => FilmDataDto(
+      kinopoiskId: (json['kinopoiskId'] as num?)?.toInt(),
       nameRu: json['nameRu'] as String,
       year: (json['year'] as num).toInt(),
       genres: (json['genres'] as List<dynamic>)

lib/data/mappers/films_mapper.dart

@@ -17,6 +17,7 @@ extension FilmDataDtoToModel on FilmDataDto {
     nameRu,
     imageUrl: posterUrl ?? _imagePlaceholder,
     descriptionText: _makeDescriptionText(year, genres),
+    id: kinopoiskId.toString(),
   );
 
   String _makeDescriptionText(int? year, List<GenreDto> genres) {