Spring boot table to show list of pets by owner id - spring-boot

Question

I'm making a small school project Spring Boot web application. Right now I have made CRUD for Owners table in the database, what I'm trying to do next is when I click button "pets" I want to be able to show only those pets that has the same "owner_id". I guess I should receive "owner_id" from the button that was pressed. How can I make that it works the way it should work? Now when I press button "pets" it shows all list of the pets.
Owner class:
#Entity
#Table(name = "owners")
public class Owner {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
#Column(name = "first_name", nullable = false)
private String firstName;
#Column(name = "last_name", nullable = false)
private String lastName;
#Column(name = "email", nullable = false)
private String email;
#OneToMany(targetEntity = Pet.class,cascade = CascadeType.ALL)
#JoinColumn(name = "owner_id", referencedColumnName = "id")
private List<Pet> pets;
public Owner() {
}
public Owner(String firstName, String lastName, String email) {
super();
this.firstName = firstName;
this.lastName = lastName;
this.email = email;
}
}
Pet class:
#Table(name = "pets")
public class Pet {
#Id
private Long id;
private String name;
private String breed;
private int age;
private double weight;
public Pet() {
}
public Pet(String name, String breed, int age, double weight) {
super();
this.name = name;
this.breed = breed;
this.age = age;
this.weight = weight;
}
}
Controller method for list of pets:
#GetMapping("/owner_pets")
public String getAllPetsByOwnerId(Model model) {
model.addAttribute("pets", petService.getAllPetsByOwnerId());
return "owner_pets";
}
Here is the code written so far but it only shows list of all pets

Answer 1

I saw your service method for PerService. I do not see any ownerId being passed to findByOwnerId method. That might be the reason why you are getting all pets in response. What you should ideally do is
package com.veterinary.Veterinary_system.service;
import java.util.List;
import com.veterinary.Veterinary_system.entity.Pet;
public interface PetService {
//Repository declaration
List < Pet > findByOwnerId(Long ownerId){
return petRepository.findByOwnerId(ownerId);
}
Pet savePet(Pet pet);
}