angular.js - angularJS 用directive的时候，放指令的地方传递的数据，怎么在template中用ng-model取到

Question

大家都没有认真看题，问题仍然没有解决( ´╥ω╥`)

我想定制一个单选控件，备选项根据传入指令的参数而定，我这里是由select-item-name指定的等于"review", 问题是在radio这里，ng-model的值不能解析成review，始终解析为参数名selectItemName

问题的重点在于，指令属性中传的值，和模板中的ng-model绑定的值的交互，不是跟父controller中的值，这里不涉及父作用域和父controller

directive代码：

angular.module('starter')
        .directive('mySelect',['$rootScope','$window','$timeout',
                        function($rootScope, $window, $timeout){
            return {
                restrict:'A',
                replace:false,
               
                scope: {
                    selectItemName:'='
                },
               
                templateUrl: 'templates/select-directive.html',
                link:function(scope, element, attrs){
                    scope.selectItems = ['aa','bb'];
                    scope.$watch(attrs.selectItemName, function(newVal, oldVal){
                    console.log('newVal:'+newVal);
                    
                    if(newVal==oldVal){
                      return;
                    } 
                    
                    });

                }
            }
        }]);
        

Answer 1

How can I use @，不是应该换=?

Added:

First of all, the difference between changing to =是对的，这里面你要了解的是=和@:

Document address: $compile

Secondly, the change of $watch部分，我有异议，如果关心selectItemName in your command should be written like this:

scope.$watch('selectItemName', function(newVal, oldVal){
    console.log('newVal:'+newVal);

    if(newVal==oldVal){
        return;
    }

});

For more content about watchExpression, you can see:

Document address: scope

Answer 2

I don’t quite understand what your problem is, but I imported your code and tried it again. After changing = back to @, I actually got it.

Answer 3

http://raowensheng.com/2014/05/08/angularjs%E7%9A%84%E8%87%AA%E5%AE%9A%E4%B9%89directive%E6%8C%87%E4%BB %A4%E7%9A%84%E7%BB%91%E5%AE%9A%E7%AD%96%E7%95%A5scope%E3%80%81%E3%80%81/ Take a look at this Article. It’s very clear