Essensbestellungsverwaltung/src/main/java/com/bib/essensbestellungsverwaltung/OrderHistoryController.java

package com.bib.essensbestellungsverwaltung;

import javafx.fxml.FXML;
import javafx.scene.control.ListView;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class OrderHistoryController {
    public ListView listView;

    @FXML
    public void initialize() {
        List<Child> children = AccountMgr.getAllChildrenFromParentWithId(AccountMgr.currentUser.getId());

        List<String> orders = new ArrayList<>();

        for (Child child : children) {
            System.out.println(child.getId());
            List<String> selections = Database.select("food_selection", new String[] { "childid" }, new String[] { String.valueOf(child.getId()) });
            for (String selection : selections) {
                String[] selectionParts = selection.split(":");
                String foodplanid = selectionParts[2];
                String foodid = selectionParts[3];
                String foodName = FoodMgr.getFoodById(Long.parseLong(foodid)).getName();
                String date = FoodMgr.getFoodPlanById(Long.parseLong(foodplanid)).getDate();
                orders.add(String.format("%s\t %s \t %s", date, child.getFirstname(), foodName));
            }
        }

        Collections.sort(orders);
        for(String order : orders){
            listView.getItems().add(order);
        }
    }
}