Having trouble at validation

[sonu0402]

Hello sir,
I am having trouble at step 27 while validating an add-a-new-todo request. When i enter more than 6 characters, the code executes normally. Although when i enter less than 6 chars, it returns;

java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'todo' available as request attribute.

Rest of the code flows normally. Here is the code of add controller.

@RequestMapping(value = "/add-todos", method = RequestMethod.GET)
public String showAddTodoPage(ModelMap model) {
model.addAttribute("todo", new ToDoBean());
return "add-todo";
}
@RequestMapping(value = "/add-todos", method = RequestMethod.POST)
public String addTodo(ModelMap model, @Valid ToDoBean todoBean,
BindingResult result) {

	if (result.hasErrors()) {
		return "add-todo";
	}
	String user = (String) model.get("name");
	todoService.addTodo(user, todoBean.getDesc(), new Date(), false);
	model.clear();// to prevent request parameter "name" to be passed
	return "redirect:/list-todos";
}

I have uploaded the code here. Thank you sir.

in28Minutes-first-webapp.zip

[ankitkeer]

You need to

1. make sure commandName is same as Bean class name.
2. when hasError is true set the ModelMap again as it is valid only for one request.

[sjaswinder82]

Hello sir,
I am having trouble at step 27 while validating an add-a-new-todo request. When i enter more than 6 characters, the code executes normally. Although when i enter less than 6 chars, it returns;

java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'todo' available as request attribute.

Rest of the code flows normally. Here is the code of add controller.

@RequestMapping(value = "/add-todos", method = RequestMethod.GET)
public String showAddTodoPage(ModelMap model) {
model.addAttribute("todo", new ToDoBean());
return "add-todo";
}
@RequestMapping(value = "/add-todos", method = RequestMethod.POST)
public String addTodo(ModelMap model, @Valid ToDoBean todoBean,
BindingResult result) {

	if (result.hasErrors()) {
		return "add-todo";
	}
	String user = (String) model.get("name");
	todoService.addTodo(user, todoBean.getDesc(), new Date(), false);
	model.clear();// to prevent request parameter "name" to be passed
	return "redirect:/list-todos";
}

I have uploaded the code here. Thank you sir.

in28Minutes-first-webapp.zip

Update method signature to:

public String addTodo(@Valid @ModelAttribute("todoBean") ToDoBean todoBean, BindingResult result) { //code goes here. }

[in28minutes]

Awesome. Do you want to submit a pull request?

[sonhandsome06]

okay you Vào CN, 27 thg 1, 2019 vào lúc 13:22 in28minutes <notifications@github.com> đã viết:

…

Awesome. Do you want to submit a pull request? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#14 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AXlokZTP1rvQ0Uhnj2gcSwUrB1KXFGEWks5vHUWegaJpZM4OQ08L> .

[sonhandsome06]

i'm not sure can help you but i will try to do it :D Vào CN, 27 thg 1, 2019 vào lúc 20:17 Optimus No <sonhandsome06@gmail.com> đã viết:

…

okay you Vào CN, 27 thg 1, 2019 vào lúc 13:22 in28minutes < ***@***.***> đã viết: > Awesome. Do you want to submit a pull request? > > — > You are receiving this because you are subscribed to this thread. > Reply to this email directly, view it on GitHub > <#14 (comment)>, > or mute the thread > <https://github.com/notifications/unsubscribe-auth/AXlokZTP1rvQ0Uhnj2gcSwUrB1KXFGEWks5vHUWegaJpZM4OQ08L> > . >