如何将模型的值存储在变量中? [英] How to store the value of model in a variable?

问题描述

我正在创建一个指令，我想在其中比较存储在模型中的值(比如名称"作为模型，它的值为Angular")存储在一个变量中.

I am creating a directive, in which i want to compare the value stored in a model (say "name" as model and it is having value "Angular") to be stored in a variable.

我尝试过类似下面的方法，

I tried something like below,

var nameValue=name;

但它(nameValue)没有值Angular"

but it(nameValue) is not having the value "Angular"

Example:

app.directive('kmRadio', function() {

  return{
    restrict:'E',
    compile: function(element,attrs) {
      var model=ngModelName;     

      console.info(attrs.kmModel);
      console.info("{{'+attrs.kmModel+'}}");

      if(attrs.kmTitle==model) {
        previewString="<input type="+"radio"+" checked>";
      }
      else {
        previewString="<input type="+"radio"+">";
      }

      var htmlText=''+previewString+''+

        element.replaceWith(htmlText);
    }
  }
}) 

谁能告诉我如何检索存储在模型(ng-model)中的值

Can anyone tell me how to retrieve the value stored in model(ng-model)

推荐答案

你可以使用 ng-checked 和一个链接函数来简化一些事情:

You can simplify things a bit with ng-checked, and a link function:

app.directive('kmRadio', function() {
  return {
    restrict: 'E',
    scope: true,
    replace: true,
    template: "<input type='radio' ng-checked='title == model' />",
    link: function(scope, element, attrs) {
      scope.model = scope.$eval(attrs.kmModel);
      scope.title = attrs.kmTitle;

      console.info('attrs.kmModel: ', attrs.kmModel);
      console.info('scope.$eval(attrs.kmModel):', scope.model);
    }
  }
})

这是一个工作演示:http://plnkr.co/edit/owTLnPUbbZIhwUtfoivt?p=预览

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