我取了所有答案的组合，现在有两种方法来使用ng-model属性:
使用一个复制ngModel的新作用域
与对链接进行编译的作用域相同
var app = angular.module('model', []);
app.controller('MainCtrl', function($scope) {
$scope.name = "Felipe";
$scope.label = "The Label";
});
app.directive('myDirectiveWithScope', function() {
return {
restrict: 'E',
scope: {
ngModel: '=',
},
// Notice how label isn't copied
template: '<div class="some"><label>{{label}}: <input ng-model="ngModel"></label></div>',
replace: true
};
});
app.directive('myDirectiveWithChildScope', function($compile) {
return {
restrict: 'E',
scope: true,
// Notice how label is visible in the scope
template: '<div class="some"><label>{{label}}: <input></label></div>',
replace: true,
link: function ($scope, element) {
// element will be the div which gets the ng-model on the original directive
var model = element.attr('ng-model');
$('input',element).attr('ng-model', model);
return $compile(element)($scope);
}
};
});
app.directive('myDirectiveWithoutScope', function($compile) {
return {
restrict: 'E',
template: '<div class="some"><label>{{$parent.label}}: <input></label></div>',
replace: true,
link: function ($scope, element) {
// element will be the div which gets the ng-model on the original directive
var model = element.attr('ng-model');
return $compile($('input',element).attr('ng-model', model))($scope);
}
};
});
app.directive('myReplacedDirectiveIsolate', function($compile) {
return {
restrict: 'E',
scope: {},
template: '<input class="some">',
replace: true
};
});
app.directive('myReplacedDirectiveChild', function($compile) {
return {
restrict: 'E',
scope: true,
template: '<input class="some">',
replace: true
};
});
app.directive('myReplacedDirective', function($compile) {
return {
restrict: 'E',
template: '<input class="some">',
replace: true
};
});
.some {
border: 1px solid #cacaca;
padding: 10px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.min.js"></script>
<div ng-app="model" ng-controller="MainCtrl">
This scope value <input ng-model="name">, label: "{{label}}"
<ul>
<li>With new isolate scope (label from parent):
<my-directive-with-scope ng-model="name"></my-directive-with-scope>
</li>
<li>With new child scope:
<my-directive-with-child-scope ng-model="name"></my-directive-with-child-scope>
</li>
<li>Same scope:
<my-directive-without-scope ng-model="name"></my-directive-without-scope>
</li>
<li>Replaced element, isolate scope:
<my-replaced-directive-isolate ng-model="name"></my-replaced-directive-isolate>
</li>
<li>Replaced element, child scope:
<my-replaced-directive-child ng-model="name"></my-replaced-directive-child>
</li>
<li>Replaced element, same scope:
<my-replaced-directive ng-model="name"></my-replaced-directive>
</li>
</ul>
<p>Try typing in the child scope ones, they copy the value into the child scope which breaks the link with the parent scope.
<p>Also notice how removing jQuery makes it so only the new-isolate-scope version works.
<p>Finally, note that the replace+isolate scope only works in AngularJS >=1.2.0
</div>
我不确定我是否喜欢在链接时编译。但是，如果您只是用另一个元素替换该元素，则不需要这样做。
总之，我更喜欢第一个。只需将scope设置为{ngModel:"="}，并在模板中需要的位置设置ng-model="ngModel"。
更新:我内联了代码片段，并为Angular v1.2更新了它。事实证明，隔离作用域仍然是最好的，特别是在不使用jQuery的情况下。所以可以归结为:
替换单个元素:只需替换它，保持作用域不变，但注意replace在2.0版本中已弃用:
app.directive('myReplacedDirective'， function($compile) {
返回{
限制:“E”,
'<input class="some">'，
替换:真
};
})；
否则使用这个:
app.directive('myDirectiveWithScope'， function() {
返回{
限制:“E”,
范围:{
ngModel:“=”,
}，
template: '<div class="some"><input ng-model="ngModel"></div>'
};
})；
