在插件中为类添加 mixin？

开发
1

I need to modify a javascript controller (create-account). If I were writing it from scratch, I’d add a mixin called something like (FooValidation), the same way the mixins PasswordValidation and UsernameValidation are applied (discourse/app/assets/javascripts/discourse/controllers/create-account.js.es6 at f03b6bd8c925163b41b9e33b39484d102dbaee44 · discourse/discourse · GitHub). I can’t figure out how, though.

I could just add the relevant properties/methods to the create account controller using PluginApi.modifyClass, but that doesn’t feel right, especially seeing as I’ll want to reuse the mixin.

What’s the best way to achieve this?

2

I believe the modifyClass method accepts a mixin as an argument, so I’d try something like this:

api.modifyClass("controller:create-account", FooValidation);
3

Ah you’re right, modifyClass calls Ember’s reopen, which can take mixins as an argument. I couldn’t get it to work at first but I got it! Thanks!

4

你能分享一些示例代码吗？

5

我在主题列表预览中实现了这一功能：https://github.com/paviliondev/discourse-topic-previews/blob/master/assets/javascripts/discourse/initializers/preview-edits.js.es6

具体示例：api.modifyClass('component:topic-list', Settings);

我这样做是为了将原本会被重复且近乎复制粘贴的共享代码提取出来。