如何从一个指令通信到另一个指令 [英] how to communicate from one directive to another directive

问题描述

我有两个指令，一个用于 ng-grid，另一个用于分页，当我点击一个指令中的页码时，ng-grid 指令应该根据那个进行更改，我对此有何想法.

I have tow directives one is for ng-grid another is for pagination when I click page numbers in one directive ng-grid directive should be changed according to that, can I have any idea on that.

推荐答案

有很多方法可以实现:例如:

There are many ways to achieve it: For example:

第一个解决方案

您可以在指令之间共享数据:

You can share data between directives:

<directive-one attribute="value" other-attribute="value2" shared-variable="yourData">
<directive-two shared-variable="yourData">

并在该值的第一个指令中设置 $watch

And set $watch inside first directive on that value

scope.$watch('yourData',function(newVal,oldVal){ //your logic called after change });

第二种解决方案

您可以使用事件:

app.directive('first',function(){
    return{
        restrict: 'E',
        template: 'Im first directive!',
        scope: true,
        link:function(scope,elem,attrs){
            scope.$on('event',function(event,args){
               alert(args); 
            });
        }
    }    
});

app.directive('second',function($rootScope){
    return{
        restrict: 'E',
        template: 'Im second directive! <button ng-click="click()">click me!</button>',
        scope: true,
        link:function(scope,elem,attrs){
            scope.click = function(){
                $rootScope.$broadcast('event','hello!');    
            };

        }
    }    
});

事件由$rootScope.$broadcast('event','hello!');发送.这意味着事件由您的根作用域向下发送到子作用域.http://jsfiddle.net/aartek/fJs69/

Event is sent by $rootScope.$broadcast('event','hello!');. It means event is sent by your root scope downwards to child scopes. http://jsfiddle.net/aartek/fJs69/

这篇关于如何从一个指令通信到另一个指令的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！