javascript - 将字符串变量从 Controller 传递到指令 angularjs

Question

我正在尝试将字符串变量从我的 Controller 传递到使用隔离范围的指令。我已经成功地传递了一个对象和一个函数，但似乎无法让它工作!

Controller :

angular.module("app").controller("myCtrl", function($scope) 
{
    //data that needs to be passed to the directive
    $scope.myParams = $scope.params; //object
    $scope.myDateOrder = $scope.dateOrder; //string
});

html:

 <div ng-controller="myCtrl">
        <my-dir params="myParams" dateOrder="myDateOrder"> 
        </my-dir>
    </div>

指令:

angular.module("app").directive("myDir", [
    function() {
        return {
            restrict: "E",
            scope: {
                checkPermissions: "&", //pulled from contact directive -> method/function
                params: "=", //passed object though from smwAddCustomerBank -> two way binding
                dateOrder: "@" //passed string value from smwAddCustomerBank -> one way binding
            },

日期订单不起作用。如果我在 Controller 中console.log它，我可以看到该字符串，如果我然后将其记录在我的指令中，它是未定义的。

有什么想法吗？

Answer 1

指令属性需要为kebab-case ，不是camelCase :

<div ng-controller="myCtrl">
    ̶<̶m̶y̶-̶d̶i̶r̶ ̶p̶a̶r̶a̶m̶s̶=̶"̶m̶y̶P̶a̶r̶a̶m̶s̶"̶ ̶d̶a̶t̶e̶O̶r̶d̶e̶r̶=̶"̶m̶y̶D̶a̶t̶e̶O̶r̶d̶e̶r̶"̶>̶ ̶
    <my-dir params="myParams" date-order="myDateOrder"> 
    </my-dir>
</div>

有关详细信息，请参阅 AngularJS Developer Guide - Directive Normalization .

<小时/>

Thank you - for anyone else that struggles with this, the full change I needed to make is: params="myParams", date-order="{{ myDateOrder }}"

要避免使用插值 ( {{ }} )，请使用 "<" 的单向绑定(bind)而不是使用 "&" 进行属性绑定(bind) :

    scope: {
        checkPermissions: "&", //pulled from contact directive -> method/function
        params: "=", //passed object though from smwAddCustomerBank -> two way binding
        ̶d̶a̶t̶e̶O̶r̶d̶e̶r̶:̶ ̶"̶@̶"̶
        dateOrder: "<" //passed string value from smwAddCustomerBank -> one way binding
    }

然后只需执行:

 <my-dir params="myParams" date-order="myDateOrder"> 

有关详细信息，请参阅 AngularJS Comprehensive Directive API Reference - scope .