$state.current different values when $state injected in onEnter() - angularjs

Question

This is my code:
angular.module("LearnRouter", ["ui.router"])
.config(['$stateProvider',
function(stateProvider) {
stateProvider.state('state1', {
controller: function($scope, $state) {
$scope.state3 = function() {
$state.go('state3');
}
},
template: "<h1><i>Template1</i><div ui-view><button type='button' ng-click=state3()>State 3</button></div></h1>",
availableOptions:["option1","option2","option3"]
});
stateProvider.state('state2', {
template: "<h1>Template2</h1>"
});
stateProvider.state('state3', {
parent: "state1",
template: "<h1>Template3<div>Names: <span ng-bind=names></span</div></h1>",
controller: function($scope, $state) {
$scope.names=$state.current.availableOptions;
},
onEnter:function($state){
console.log($state)
}
});
}
])
.service('namesRepo', function() {
this.fetch = function() {
return ['name1', 'name2', 'name3'];
}
})
.controller("IndexController", ["$scope", "$state",
function($scope, $state) {
$scope.state1 = function() {
$state.go('state1');
}
$scope.state2 = function() {
$state.go('state2');
}
}
]);
It's simple javascript representing usage of angular-ui-router.
I wanted to test whether the child state inherits custom fields from the parent state.
Obviously i came to the conclusion it doesn't or at least my results are showing this.
As seen from the code I pass $state to the onEnter function. Since the state is entered (or at least this is how i understand the things), current state must be state3. Even the console.log approve that understanding
So when i try to console.log($state.current) the result is something different. It gives me that the parent state is the current one.

Answer 1

onEnter and onExit callbacks are invoked while the transition is still in process. $state.current is not updated until the transition is fully complete. Once the transition is complete, $state.current is set to the "to" state, $stateChangeSuccess is called, and the controllers are invoked.
As such, $state.current contains the "from" state during onEnter and onExit.