source: trip-planner/src/main/java/finki/diplomska/tripplanner/service/impl/MapValidationErrorService.java

package finki.diplomska.tripplanner.service.impl;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;

import java.util.HashMap;
import java.util.Map;

@Service
public class MapValidationErrorService {
    public ResponseEntity<?> MapValidationService(BindingResult result){

        if(result.hasErrors()){
            Map<String, String> errorMap = new HashMap<>();

            for(FieldError error: result.getFieldErrors()){
                errorMap.put(error.getField(), error.getDefaultMessage());
            }
            return new ResponseEntity<Map<String, String>>(errorMap, HttpStatus.BAD_REQUEST);
        }

        return null;

    }
}