AngularJS-超越范围的访问指令范围

问题描述

我有某种形式的指令.通常，这就是我所需要的，但有时我需要添加一些其他输入字段.因此，我尝试为此使用转写，但这是行不通的.

I have a directive with some form. Usually it is all I need, but sometimes I need to add some more input fields. So I tried to use transclusion for that, but it doesn't work.

我创建了一个监听器来说明: http://plnkr.co/edit/zNOK3SJFXE1PxsvUvPBQ? p =预览

I created a plunker to ilustrate that: http://plnkr.co/edit/zNOK3SJFXE1PxsvUvPBQ?p=preview

指令是一种简单的表单，具有输入字段，包含和一个按钮，可用于对其进行测试(并非省略了重要部分):

Directive is a simple form with input field, transclusion and a button to help testing it (not important parts ommitted):

scope: {
},
transclude: 'element',
template: 
  '<form name="myForm">' +
  '<input type="text" ng-model="data.inDirective"></input>' +
  '<div ng-transclude></div>' +
  '<button ng-click="showData()">show data</button>' +
  '</form>'

在这里它与包含一起使用:

And here it is used with transclusion:

<form-as-directive>
  <input type="text" ng-model="data.inTransclude"></input>
</form-as-directive>

我可以在转换中以某种方式使用指令的作用域吗?

Can I somehow use directive's scope in the transclusion?

推荐答案

如果您需要将包含在html中的控件绑定到指令的(隔离)范围，则必须手动"执行包含(不包含ng -transclude)，则使用链接函数的transcludeFn参数.此功能使您可以更改包含范围.

If you need to bind the controls in the transcluded html to the (isolate) scope of the directive, you have to do the transclusion "manually" (without ng-transclude), using the transcludeFn parameter of the link function. This function allows you to change the scope of the transclusion.

scope: {
},
transclude: 'element',
replace: true,
template: 
    '<form name="myForm">' +
    '<input type="text" ng-model="data.inDirective"></input>' +
    '<div class="fields"></div>' +
    '<button ng-click="showData()">show data</button>' +
    '</form>',
link: function (scope, elem, attrs, ctrl, transcludeFn) {
    // "scope" here is the directive's isolate scope 
    elem.find('.fields').append(transcludeFn(scope, function () {}));
}

否则，将包含项自动绑定到父(控制器)作用域的(新)子级，以便能够(通过继承)访问该父作用域的属性.

Otherwise, the transclusion is automatically bound to a (new) child of the parent (controller) scope, in order to have access to the properties of that parent scope (through inheritance).

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