如何使angular-ui输入与angularjs属性(特别是ng-readonly)配合?

I want to achieve read/write access control for select input using angularjs and angular-ui (particularly ui-select2 feature). Scenario is simple: by using ng-readonly attribute I can control whether given input value can be changed by user or not.

我想使用angularjs和angular-ui(特别是ui-select2特性)实现对选择输入的读/写访问控制。场景很简单:通过使用ng-readonly属性，我可以控制给定的输入值是否可以由用户改变。

<input id="clientShortName" class="span4" type="text" ng-readonly="readOnly" ng-model="client.shortName" />
<input ui-select2="{ tags: sometags}" id="clientTagsSelection" class="span4" type="text" ng-readonly="readOnly" ng-model="client.tagsSelection"/>
<input type="button" value="Edit" ng-click="readOnly = !readOnly"/>

This works fine for standard angularjs but when I'm trying to use inputs defined by angular-ui it doesn't work (doesn't change the read/write state of input).

这适用于标准的angularjs，但当我尝试使用由angular-ui定义的输入时，它不起作用(不会改变输入的读/写状态)。

Full scenario is covered here: http://plnkr.co/edit/pKs4Tq

完整的场景在这里介绍:http://plnkr.co/edit/pKs4Tq

1 个解决方案

#1

Unfortunately the AngularUI ui-select2 directive has no integration with the angularJS ng-readonly directive.

不幸的是，AngularUI ui-select2指令没有与angularJS ng-readonly指令集成。

One way for you to overcome this is to create your own directive and watch for changes on the readOnly property, like this:

克服这个问题的一种方法是创建您自己的指令并观察readOnly属性的更改，如下所示:

app.directive('csReadonly', function() {
  return {
    restrict: "A",
    link: function(scope, iElement, iAttrs, controller) {
      scope.$watch(iAttrs.csReadonly, function(readonly) {
        iElement.select2(readonly ? 'disable' : 'enable');
      });
    }
  }
});

And use it like this:

像这样使用它:

<input ui-select2="{ tags: sometags }" cs-readonly="readOnly" ... />

Plunker: http://plnkr.co/edit/LBFDg2

砰砰作响:http://plnkr.co/edit/LBFDg2

The advantage of the approach is that, if in the future AngularUI decides to include support for the ng-readonly, you will only have to replace cs- with ng- and you're done.

这种方法的优点是，如果将来AngularUI决定包含对ng-readonly的支持，那么只需用ng替换cs即可。

#1