如何在指令中插入 $compile'd HTML 代码而不会出现 $digest 递归错误? [英] How to insert $compile'd HTML code inside the directive without getting $digest recursion error?
问题描述
我有一个指令,根据 ng-repeat
项目数据(来自数据库),使用 switch case 构建自定义 HTML:
I have a directive that, depending on the ng-repeat
item data (from the database), build custom HTML with a switch case:
app.directive('steps', function($compile){
return {
'restrict': 'A',
'template': '<h3>{{step.name}}</h3><ul ng-repeat="opt in step.opts"><div ng-bind-html-unsafe="extra(opt)"></div></ul>',
'link': function($scope, $element){
$scope.extra = function(opt){
switch ($scope.step.id){
case 1:
return "<div>Some extra information<select>...</select></div>"
case 2:
return "<div><input type='checkbox' ng-model='accept'> Accept terms</div>"
case 3:
return "<div>{{step.title}}<select multiple>...</select></div>"
}
}
}
}
});
上面的代码有效,但函数内的可绑定 {{step.title}}
无效.我尝试了 $compile(html)($scope)
但它给了我一个 Error: 10 $digest() 迭代达到.中止!
.我该如何处理?
the code above works, but the bindable {{step.title}}
inside the function doesn't work. I tried $compile(html)($scope)
but it gave me a Error: 10 $digest() iterations reached. Aborting!
. How am I supposed to deal with this?
推荐答案
答案是为每个选项创建一个子"指令,这样你就可以通过值绑定它们,而不是用参数调用函数.你离开了程序 Javascript,但程序 Javascript 不会离开你
The answer is to create a "sub" directive for each opt, so you can bind them by value instead of calling functions with arguments. You leave procedural Javascript, but procedural Javascript doesn't leave you
app.directive('opt', function($compile){
return {
'restrict': 'A',
'template': '<div>{{extra}}</div>',
'link': function($scope, $element){
switch ($scope.step.id){
case 1:
extra = "<div>Some extra information<select>...</select></div>";break;
case 2:
extra = "<div><input type='checkbox' ng-model='accept'> Accept terms</div>";break;
case 3:
extra = "<div>{{step.title}}<select multiple>...</select></div>";break;
}
$scope.extra = $compile(extra)($scope);
}
}
});
app.directive('steps', function(){
return {
'restrict': 'A',
'template': '<h3>{{step.name}}</h3><ul><li ng-repeat="opt in step.opts" opt></li></ul>',
'link': function($scope, $element){
}
}
});
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