我已经尝试了这里提到的答案,但没有好运气(我正在使用angularjs 1.3)。 我的问题有两个部分:
1)尽管在作用域中使用'= '(参见下面的代码),复杂属性仍未被传递为对象。
2)应该评估以提供单向绑定的函数也被传递为字符串。
示例用法:
指令代码。
1)尽管在作用域中使用'= '(参见下面的代码),复杂属性仍未被传递为对象。
2)应该评估以提供单向绑定的函数也被传递为字符串。
示例用法:
<button type="button" class="btn btn-success" ng-click="RestEditCtrl.saveRestaurantDetails();">
<smart-btn-label btn-state="RestEditCtrl.ajaxState(RestEditCtrl.restaurant.id)"
when-normal="{label: 'Save', icon: 'glyphicon-floppy-disk' }"
when-active="{label: 'Saving...', icon: 'glyphicon-refresh glyphicon-spin-animate'}"
when-success="{label: 'Saved!', icon: 'glyphicon glyphicon-floppy-saved'}"
when-error="{label: 'Try saving again', icon: 'glyphicon glyphicon-exclamation-sign'}"></smart-btn-label>
</button>
指令代码。
angular.module("app")
.directive('smartBtnLabel', function () {
return {
restrict: 'E',
scope: {
btnState: '&', // not working, @ evaluates but that defeats my purpose
whenActive: '=', // not evaluating any which way, it always comes as string
whenError: '=',
whenSuccess: '=',
whenNormal: '='
},
link: function (scope, elem, attrs) {
console.log(attrs);
var curState = "normal",
curLabel = attrs.whenNormal ? attrs.whenNormal.label : "",
curIcon = attrs.whenNormal ? attrs.whenNormal.icon : "";
if (attrs.btnState) curState = attrs.btnState;
if(curState == "active"){
curLabel = attrs.whenActive ? attrs.whenActive.label : "";
curIcon = attrs.whenActive ? attrs.whenActive.icon : ""
} else if(curState == "success"){
curLabel = attrs.whenSuccess ? attrs.whenSuccess.label : "";
curIcon = attrs.whenSuccess ? attrs.whenSuccess.icon : ""
} else if(curState == "error"){
curLabel = attrs.whenError ? attrs.whenError.label : "";
curIcon = attrs.whenError ? attrs.whenError.icon : ""
}
scope.curLabel = curLabel;
scope.curIcon = curIcon;
},
template: '<span aria-hidden="true" ng-show="curIcon" class="glyphicon {{curIcon}}" ></span>' +
'<span ng-show="curLabel"> {{curLabel}}</span>'
};
});
我在这里做错了什么?:-(
解决方案
感谢PSL,以下是我最终得出的结果:
angular.module("app")
.directive('smartBtnLabel', function () {
return {
restrict: 'E',
scope: {
btnState: '&',
whenActive: '&',
whenError: '&',
whenSuccess: '&',
whenNormal: '&'
},
controller: ['$scope', function($scope){
var vm = this;
vm.props = {icon: "", label: ""};
var _setProperties = function () {
var _btnState = "normal";
if ($scope.btnState) _btnState = $scope.btnState();
if (_btnState == "active" && $scope.whenActive) vm.props = $scope.whenActive();
else if (_btnState == "success" && $scope.whenSuccess) vm.props = $scope.whenSuccess();
else if (_btnState == "error" && $scope.whenError) vm.props = $scope.whenError();
else if ($scope.whenNormal) vm.props = $scope.whenNormal();
};
if($scope.btnState){
$scope.$watch($scope.btnState, function () {
_setProperties();
});
}
_setProperties();
}],
controllerAs : "smartBtnLabelCtrl",
template: '<span aria-hidden="true" ng-show="smartBtnLabelCtrl.props.icon" class="glyphicon {{smartBtnLabelCtrl.props.icon}}" ></span>' +
'<span ng-show="smartBtnLabelCtrl.props.label"> {{smartBtnLabelCtrl.props.label}}</span>'
};
});