如何从 AngularJS 中的多级指令获取控制器范围(没有 $parent) [英] How to get controller scope from multi-level directives in AngularJS(without $parent)
问题描述
如何从以下结构的多级指令访问控制器范围:
我创建了一个包含多级作用域的指令.
1. 控制器作用域1.2.指令1范围(主指令)1.2.1.指令 2 范围1.2.1.1 指令 3 范围我想从指令 3 中获取控制器范围.
请不要引用 $parent 因为它不确定父级别，用户可能会在另一个指令中使用此指令.(见下面的代码)
<自定义目录><目录1><dir2><dir3></dir1><自定义目录>用户在测试控制器中创建一个函数，该函数将在我的指令 3 范围内调用(如何获得控制器范围?).
<目录1><dir2><dir3></dir1>更多细节(请不要参考语法错误):
控制器是:
App.controller('ScopeController', function ($scope, $rootScope, $uibModal, $http, $filter, $cookieStore, Common, $cookies) {$scope.runTest = 函数 () {return `<input type='button' ng-click='testHtml()' value='Test'/>`;}$scope.testHtml = 函数 () {警报(工作")；}$scope.model=someModel;$scope.config=someConfig;$scope.columns={html: $scope.runTest};});dir1 指令:
App.directive("dir1", function ($compile, $filter, $rootScope, $timeout, Common, $window, $http) {返回 {限制:E"，优先级:1，终端:假，templateUrl: "Content/html/Table.html?version=2.6",范围: {型号:="，列:="，配置:="，搜索: "@"，},链接:函数(范围，元素，属性){scope.CallFunc = 函数(html){if (typeof (html) =="function" )返回 html();别的 {return scope.$parent.$eval(html + "()", {});}}}}});动态指令编译 runTest 输出
App.directive('dynamic', function ($compile) {返回 {限制:'A'，替换:真，链接:函数(范围、元素、属性){scope.$watch(attrs.dynamic, 函数 (html) {ele.html(html);$compile(ele.contents())(scope);});}};});如果我将行 $compile(ele.contents())(scope); 更改为 $compile(ele.contents())(scope.$parent.$parent); 它的工作.
在这个指令中，我需要在没有 $parent 的情况下获取控制器范围，因为一些用户可能会在另一个与下面相同的指令中使用这个指令:
<dir1 model="model" columns="columns" config="config"><div dynamic="CallFunc(columns.html)"></div></dir1></custom-dir> 使用 HTML 标签
<div dynamic="CallFunc(columns.html)"></div></dir1> 此问题处理代码如下:
用于存储控制器范围的服务:
App.service('TableService', function () {返回 {我的范围:空};});将 TableService 注入动态指令(该指令编译动态内容):
App.directive('dynamic', function ($compile,TableService) {返回 {限制:'A'，替换:真，链接:函数(范围、元素、属性){scope.$watch(attrs.dynamic, 函数 (html) {ele.html(html);$compile(ele.contents())(TableService.MyScope);});}};});最后在控制器中:
App.controller('ScopeController', function ($scope, $rootScope, $uibModal,$http, $filter, $cookieStore, Common, $cookies,TableService) {TableService.myScope = $scope;$scope.runTest = 函数 () {return `<input type='button' ng-click='testHtml()' value='Test'/>`;}$scope.testHtml = 函数 () {警报(工作")；}$scope.model=someModel;$scope.config=someConfig;$scope.columns={html: $scope.runTest};});之后，动态指令可以访问控制器范围，并且即使指令放入另一个指令(不使用 $parent)，所有动态事件(如 testHtml)也将被调用.
谢谢@shaunhusain、huan feng 给了我一个想法.
How can I access controller scope from multi-level directives in below structure:
I create a directive that has multi-level scopes inside its.
1. Controller scope
1.2. Directive1 scope(main directive)
1.2.1. Directive2 scope
1.2.1.1 Directive3 scope
I want to get the controller scope from directive 3.
please don't refer to $parent because the parent level it's not certain and a user may use this directive inside another directive.(see below codes)
<div ng-controller="Test">
<custom-dir>
<dir1>
<dir2>
<dir3>
</dir3>
</dir2>
</dir1>
<custom-dir>
</div>
The users create a function in the Test controller and the function will be called in my Directive 3 scope(how to get controller scope?).
<div ng-controller="Test">
<dir1>
<dir2>
<dir3>
</dir3>
</dir2>
</dir1>
</div>
More details(please don't refer to syntax error):
The controller is:
App.controller('ScopeController', function ($scope, $rootScope, $uibModal, $http, $filter, $cookieStore, Common, $cookies) {
$scope.runTest = function () {
return `<input type='button' ng-click='testHtml()' value='Test'/>`;
}
$scope.testHtml = function () {
alert("work");
}
$scope.model=someModel;
$scope.config=someConfig;
$scope.columns={html: $scope.runTest};
});
the dir1 directive:
App.directive("dir1", function ($compile, $filter, $rootScope, $timeout, Common, $window, $http) {
return {
restrict: "E",
priority: 1,
terminal: false,
templateUrl: "Content/html/Table.html?version=2.6",
scope: {
model: "=",
columns: "=",
config: "=",
search: "@",
},
link: function (scope, elem, attrs) {
scope.CallFunc = function (html) {
if (typeof (html) =="function" )
return html();
else {
return scope.$parent.$eval(html + "()", {});
}
}
}
}
});
the dynamic directive compile the runTest output
App.directive('dynamic', function ($compile) {
return {
restrict: 'A',
replace:true,
link: function (scope, ele, attrs) {
scope.$watch(attrs.dynamic, function (html) {
ele.html(html);
$compile(ele.contents())(scope);
});
}
};
});
If I change the line $compile(ele.contents())(scope); to $compile(ele.contents())(scope.$parent.$parent); it's work.
In this directive, I need get the controller scope without $parent because some users may use this directive inside another directive same below:
<custom-dir>
<dir1 model="model" columns="columns" config="config">
<div dynamic="CallFunc(columns.html)"></div>
</dir1>
</custom-dir>
The using HTML tag
<dir1 model="model" columns="columns" config="config">
<div dynamic="CallFunc(columns.html)"></div>
</dir1>
This issue handle with following codes:
A service for storing the controller scope:
App.service('TableService', function () {
return {
MyScope: null
};
});
Inject the TableService to dynamic directive(this directive compiles dynamic content):
App.directive('dynamic', function ($compile,TableService) {
return {
restrict: 'A',
replace:true,
link: function (scope, ele, attrs) {
scope.$watch(attrs.dynamic, function (html) {
ele.html(html);
$compile(ele.contents())(TableService.MyScope);
});
}
};
});
And finally in the controller:
App.controller('ScopeController', function ($scope, $rootScope, $uibModal,
$http, $filter, $cookieStore, Common, $cookies,TableService) {
TableService.myScope = $scope;
$scope.runTest = function () {
return `<input type='button' ng-click='testHtml()' value='Test'/>`;
}
$scope.testHtml = function () {
alert("work");
}
$scope.model=someModel;
$scope.config=someConfig;
$scope.columns={html: $scope.runTest};
});
After that, the dynamic directive can access controller scope and all dynamic events(like testHtml) will be called even if the directive put in another directive(without using the $parent).
thank you @shaunhusain, huan feng for giving me an idea.
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