Spring RequestParam
i have a form, which has an array wiht ints. i want to add an int to this forms array.
Form
why is the array empty in the tonewentry func?
@PostMapping(path = "/a")
String addEntry(@Valid @ModelAttribute("form") Form form, Errors errors, Model model,
@RequestParam(value = "id", required = false, defaultValue = "0") int id) {
if (id != 0) {
form.add(id);
return mainMapping(model, form); // is the get mapping for /a
// return "a";????
}
form.toNewEntry();
return "redirect:/b";
} @PostMapping(path = "/a")
String addEntry(@Valid @ModelAttribute("form") Form form, Errors errors, Model model,
@RequestParam(value = "id", required = false, defaultValue = "0") int id) {
if (id != 0) {
form.add(id);
return mainMapping(model, form); // is the get mapping for /a
// return "a";????
}
form.toNewEntry();
return "redirect:/b";
}Form
public void add(int id) {
List<Integer> arr = getAlleys();
if (arr.contains(id)) {
return;
}
arr.add(id);
setAlleys(arr);
System.out.println(getAlleys()); // [1]
}
Model toNewEntry() {
Model entry = Model();
System.out.println(getAlleys()); // []
entry.setAlleys(getAlleys());
return entry;
} public void add(int id) {
List<Integer> arr = getAlleys();
if (arr.contains(id)) {
return;
}
arr.add(id);
setAlleys(arr);
System.out.println(getAlleys()); // [1]
}
Model toNewEntry() {
Model entry = Model();
System.out.println(getAlleys()); // []
entry.setAlleys(getAlleys());
return entry;
}why is the array empty in the tonewentry func?
