サービスやウォッチャーなしで AngularJS の状態間で $scope データを共有する方法は?

Sharing $scope Data Among States in AngularJS

Question:

How can $scope data from the parent controller be accessible to child states in AngularJS without using services or parent controller watchers?

Answer:

Understanding Scope Inheritance

In AngularJS, scope properties inherit down the state chain if the state views are nested. Therefore, define the state views as follows:

.state("main", {
      controller:'mainController',
      url:"/main",
      templateUrl: "main_init.html"
  })  
  .state("main.1", {
      controller:'mainController',
      parent: 'main',
      url:"/1",
      templateUrl: 'form_1.html'
  })  
  .state("main.2", {
      controller:'mainController',
      parent: 'main',
      url: "/2",
      templateUrl: 'form_2.html'
  })  

Initializing the Data in the Parent Controller

Instantiate the data in the parent controller as an object with properties, such as:

controller('mainController', function ($scope) {
  $scope.Model = $scope.Model || {Name : "xxx"};
})

Using Dot Notation in ng-model

Ensure prototypal inheritance by using dot notation in ng-model, e.g.:

<input type="text" ng-model="Model.Name">

Example:

See a working example in this Plunker: https://plnkr.co/edit/jmEb62e96kHlXPjLGBb9?p=preview

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