angular.js - angular指令 作用域问题

Question

如何让指令内部的controller生成的数据传到指令外部的控制器中

Answer 1

Let’s talk about three methods first:

1. The one upstairs answered using broadcast communication, $emit向上，$broadcastdownside

The data of

2. service共享数据，就是把同一个service注入到directive和controller中，然后操作这个service is good

3. Of course your directive如果在controller的里面，本身就可以访问到controller的作用域(前提是没创建独立scope)，直接在directive的controller中操作scope is fine

Answer 2

Internal $scope.$emit("emit",data)
External $scope.$on("emit",function(ev,data){console.log(data)})

Answer 3

Use independent scope, "=" two-way binding, and pass the data you want to bind through the parameters in the instruction.

Answer 4

There are many ways to use your data.

Distribution via event subscriptions and broadcasts

//$rootScope
$rootScope.$on('data-pass',function(event, data){ $rootScope.$broadcast('data-receive', data) })
// 传递数据的controller
$scope.$emit('data-pass', data)
// 需要数据的controller
$scope.$on('data-receiver', function(event, data){
    // use data to do something
})

Rewrite the object attribute value on the root scope through the inheritance feature of $scope

// 根作用域
$rootScope.data = {}
// 传递数据的controller
$scope.data.record = {}
// 需要数据的controller
// use $scope.data.record to do something

Use the angular public module for data storage and inject it into the controller that needs to be used

angular.factory('publicData',function(){
    return {}
});
// 传递数据的controller
angular.controller('passController',function($scope, publicData){
    publicData.record = {}
})
// 需要数据的controller
angular.controller('needController',function($scope, publicData){
    // use publicData.record to do something
})