категории создаются, удаляются, фильмы редактируются, починила удаление категорий - добавила динамический запрос для удаления всех связанных фильмов

backend/src/main/java/com/example/backend/categories/service/CategorieService.java

@@ -8,6 +8,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 import com.example.backend.core.errors.NotFoundException;
+import com.example.backend.movies.repository.MovieRepository;
 import com.example.backend.categories.model.CategorieEntity;
 import com.example.backend.categories.repository.CategorieRepository;
 
@@ -15,9 +16,11 @@ import com.example.backend.categories.repository.CategorieRepository;
 public class CategorieService {
 
     private final CategorieRepository repository;
+    private final MovieRepository movieRepository;
 
-    public CategorieService(CategorieRepository repository) {
+    public CategorieService(CategorieRepository repository, MovieRepository movieRepository) {
         this.repository = repository;
+        this.movieRepository = movieRepository;
     }
 
     private void checkName(String name) {
@@ -57,6 +60,7 @@ public class CategorieService {
     @Transactional
     public CategorieEntity delete(Integer id) {
         final CategorieEntity existsentity = get(id);
+        movieRepository.deleteByCategorieId(existsentity.getId());
         repository.delete(existsentity);
         return existsentity;
     }

backend/src/main/java/com/example/backend/movies/api/MovieController.java

@@ -110,6 +110,7 @@ public class MovieController {
             return MOVIE_EDIT_VIEW;
         }
         model.addAttribute("categories", categorieService.getAll());
+        model.addAttribute(CATEGORIEID_ATTRIBUTE, 0);
         redirectAttributes.addAttribute(PAGE_ATTRIBUTE, page);
         movieService.create(toEntity(movieDTO));
         return Constants.REDIRECT_VIEW + URL;
@@ -121,6 +122,7 @@ public class MovieController {
         if (id <= 0) {
             throw new IllegalArgumentException();
         }
+        model.addAttribute("categories", categorieService.getAll());
         model.addAttribute(MOVIE_ATTRIBUTE, toDto(movieService.get(id)));
         model.addAttribute(PAGE_ATTRIBUTE, page);
         return MOVIE_EDIT_VIEW;

backend/src/main/java/com/example/backend/movies/repository/MovieRepository.java

@@ -20,6 +20,8 @@ public interface MovieRepository
 
     Page<MovieEntity> findByCategorieId(Integer categorieId, Pageable page);
 
+    Optional<MovieEntity> deleteByCategorieId(Integer categorieId);
+
     @Query("SELECT COUNT(DISTINCT v.user.id) FROM ViewedEntity v WHERE v.movie.id = :movieId")
     Integer getCountViews(@Param("movieId") Integer movieId);