How to search in parent entity scope when using spring boot data rest

Question

Now I know how to findBySomething on root level entity.

Let's say I have a one to many relation of class -> student

I can now students/search/findByName?name=Tom

But it will give me Tom in all classes. Can I do something like

classes/1/students/search/findByName?name=Tom

It gives error right now.

Answer 1

in StudentController

@GetMapping("/classes/{classId}/students/search/findByName")
public ResponseEntity<?> findStudent(@PathParam("name") String name,
                    @PathVariable("classId") String classId) {
    return ResponseEntity.ok(studentService.findByNameAndClassId(name, classId));
} 

in StudentService

public List<Student> findByNameAndClassId(String name, String classId) {
    return studentRepository.findByNameAndClassId(name, classId);
}

in StudentRepository (I use mongoDB; if u use SQL , extends JpaRepository)

@Repository
public interface CustomUserRepo extends MongoRepository<Student, String> {
    List<Student> findByNameAndClassId(String name, String classId);
}