Question

我正在尝试将$ compile注入我的指令中，所以我可以在将指令附加到div之前编译它。现在，$ compile是未定义的，我注入错了吗？我正在使用ES6 / Angular 1.5.x

    import MyController from './mycontroller';

    class MyDirective {
       constructor($compile) {
        this.restrict = 'A';
        this.scope = {};

        this.controller = MyController;
        this.controllerAs = 'vm';
        this._$compile = $compile;
     }

     link(scope, element) {
        let div = angular.element(document.getElementById('targetDiv'));

        // $compile is undefined
        let compiled = this._$compile("<another-directive></another-directive>")(scope));
     }

      static directiveFactory($compile){
        MyDirective.instance = new MyDirective($compile);
        return MyDirective.instance;
      }
    }

    MyDirective.directiveFactory.$inject = ['$compile'];

    export default MyDirective.directiveFactory;

Answer 1

我也遇到过与ES6风格类似的问题，经过多次努力，我想出了下面的工作模式。希望这也解决了你的问题。我

this使用ES6样式的指令内部链接函数将为null。为了让家属注入并使用ES6风格的指令工作，请遵循以下风格：

import MyController from './mycontroller';

class MyDirective {
   constructor() {
    this.restrict = 'A';
    this.scope = {};

    this.controller = MyController;
    this.controllerAs = 'vm';
 }

 link(scope, element, attr, ctrl) {
    let div = angular.element(document.getElementById('targetDiv'));

    let compiled = ctrl.$compile("<another-directive></another-directive>")(scope));
 }

  static directiveFactory(){
    MyDirective.instance = new MyDirective();
    return MyDirective.instance;
  }
}

export default MyDirective.directiveFactory;

在mycontroller.js中，注入$ compile服务并将其绑定到构造函数内的控制器实例。以下是示例代码段：

export default class MyController {
   constructor($compile) {
       ...
       this.$compile = $compile;
       ...
   }

   ...
 }

 MyController.$inject = ['$compile'];

Answer 2

您可以在MyDirective类中简化解决方案：

class MyDirective {
 constructor() {
    this.restrict = 'A';
    this.scope = {};
    this.controllerAs = 'vm';
 }

 controller($compile){
   this.$compile = $compile;
 }

 link(scope, element, attr, ctrl) {
    let div = angular.element(document.getElementById('targetDiv'));

    let compiled = ctrl.$compile("<another-directive></another-directive>")(scope));
 }
}

MyDirective.$inject = ['$compile'];

将$ compile注入指令undefined

2 个答案: