有没有办法在模板上下文更新之前/之后插入回调? [英] Is there any way to insert a callback before/after a templates context is updated?

问题描述

我知道Template.onRendered，但是我需要销毁并设置一些在实际上下文更新时对dom起作用的插件.

I'm aware of Template.onRendered, however I have the need to destroy and setup some plugins that act on the dom when the actual context is updated.

所以说我有内容模板，我需要类似以下内容的东西:

So saying I have content template, I'd need something similar to the following:

Template.content.onBeforeChange(function () {
  $(".editor").editable("destroy");
});

Template.content.onAfterChange(function () {
  $(".editor").editable();
});

使用现有的模板API，有什么当前的方法可以实现这一目标?

Is there any current way I can achieve this with the existing Template api?

推荐答案

您应该能够在 currentData ="=" nofollow>模板自动运行:

You should be able to detect a context change within a template autorun by looking at currentData like this:

Template.content.onRendered(function() {
  this.autorun(function() {
    if (Template.currentData()) {
      // the context just changed - insert code here
    }
  });
});

我不清楚这是否适用于您的特定情况，因为此技术只能使您获得与onAfterChange相同的效果.

I'm unclear if that works for your particular case because this technique only gets you the equivalent of onAfterChange.

这篇关于有没有办法在模板上下文更新之前/之后插入回调?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！