Extending UI-Router-Tabs To Display Form Validation State - angularjs

Question

I'm pretty new to Angular and having a problem figuring out how to bind a value from a data service to a customization of the https://github.com/rpocklin/ui-router-tabs project that I have created.
The customization is to display an icon in the tab heading that toggles based on the validation state of the corresponding ui-view. I've wired up a data service that is updated when validation succeeds or fails, and the binding is being "seen" by the controller that renders the tabs.
The problem arises when I attempt to pass this value into the tab data as "options". The value change/icon toggle is not being processed as the validation state changes. If I pass a hard-coded "true" into the tab data, the desired icon is displayed.
vm.tabs = [
{
heading: "View 1",
route: "manage.view1",
options: {
status: vm.stateService.getForm1State()
}
},
{
heading: "View 2",
disable: vm.disableTabs,
route: "manage.view2",
options:{
status: true
}
}
];
This doesn't seem like something that should be that difficult, so I think I'm just missing something obvious about the scoping. Here is a plunk http://plnkr.co/edit/iefvwcffSZmpfy83NGde?p=preview that demonstrates the issue.
Note: should be tagged as ui-router-tabs, but I lack the reputation to create the tag.

Answer 1

The problem lies here:
options: {
status: vm.stateService.getForm1State()
}
Since stateService.getForm1State() returns a boolean value, this value will be copied and assigned as the value of the status property.
So when this code has executed once it will for example be:
options: {
status: false
}
The options object won't react to any changes within the stateService.
An easy solution is to have stateService.getForm1State() return an object instead.
For example:
function stateService() {
var form1IsValid = {
status: false
};
return {
getForm1State: getForm1State,
setForm1State: setForm1State
};
function getForm1State() {
return form1IsValid;
}
function setForm1State(newValue) {
form1IsValid.status = newValue;
return;
}
Then make the options object refer to the same object:
options: vm.stateService.getForm1State()
Now whenever you have:
options.status
It will be the same as:
vm.stateService.getForm1State().status
And it will correctly reflect the changes.
Demo: http://plnkr.co/edit/KjXVSSMJbLw7uod0ac6O?p=preview