如何使流星模板助手重新运行/呈现另一个模板渲染后？

问题描述

我在模板Nav中有一个名为{{renderNav}}的模板助手。例如

   c $ c>模板，它会通知 renderNav 它完成绘图。
  Template.contentWidnow.rendered = function（）{
 ... 
 
 //在渲染回调的最后设置它。 
 Session.set（'contentWindowRenderMark'，''+ 
 new Date（）。getTime（）+ 
 Math.floor（Math.random（）* 1000000））; 
} 
 
 
 Template.renderNav.contentData = function（）{
 //您不必实际使用标记值
 / /但您需要获取它，以便为此帮助程序注册依赖项
 //。 
 var mark = Session.get（'contentWindowRenderMark'）; 
 
 //获取您需要的数据并准备显示
 ... 
} 
  
  
 
 
 
 
 
 
  
 $ b 
有了您提供的进一步信息，我们可以创建此类代码：        content.js  
 
 $ b 
  Content = {}; 
 Content._dep = new Deps.Dependency; 
  
  contentWindow.js  
  Template.contentWidnow.rendered = function（）{
 Content.headers = this.findAll（'：header'）; 
 Content._dep.changed（）; 
} 
  
  renderNav.js  
  Template.renderNav.contentData = function（）{
 Content._dep.depend（）; 
 //在这里使用Content.headers 
 ... 
} 
  
 
I have a template helper called {{renderNav}} in a template Nav
e.g.
Template.Nav.renderNav
and within that helper function I want to parse the rendered output of another helper within a different template
For example the helper
Template.contentWindow.content
which provides the html for
{{content}}
and my renderNav helper wants to part the html that replaces {{content}} to generate the     html for 
{{renderNav}}
how would I do this? right now the {{renderNav}} helper executes for or runs more quickly and so it is unable to parse the html that replaces {{content}}
@Hugo - I did the following in my code as you suggested
Template.contentWindow.rendered = function() {
    debugger;
    return Session.set('entryRendered', true);
};

Template.Nav.renderNav = function() {
    debugger;
    var forceDependency;
    return forceDependency = Session.get('entryRendered');
};
When I run it, the debugger first stops when executing the renderNav helper. (Which makes sense with what I am seeing in terms of the race condition). Then contentWindow renders and I hit the breakpoint above the Session.set('entryRendered', true). But then the renderNav doesn't run again as you suggest it should. Did I misinterpret or incorrectly implement your suggestion?
 解决方案 
You need a dependency in the template that you want to rerun. There are few possibilities, depending on what data you want to get.
For example, you can set a reactive marker in the content template that will notify renderNav that it's done with drawing.
Template.contentWidnow.rendered = function() {
    ...

    // Set this on the very end of rendered callback.
    Session.set('contentWindowRenderMark', '' +
        new Date().getTime() +
        Math.floor(Math.random() * 1000000) );
}


Template.renderNav.contentData = function() {
    // You don't have to actually use the mark value,
    // but you need to obtain it so that the dependency
    // is registered for this helper.
    var mark = Session.get('contentWindowRenderMark');

    // Get the data you need and prepare for displaying
    ...
}
With further information you've provided, we can create such code:
content.js
Content = {};
Content._dep = new Deps.Dependency;
contentWindow.js
Template.contentWidnow.rendered = function() {
    Content.headers = this.findAll(':header');
    Content._dep.changed();
}
renderNav.js
Template.renderNav.contentData = function() {
    Content._dep.depend();
    // use Content.headers here
    ...
}
                        
这篇关于如何使流星模板助手重新运行/呈现另一个模板渲染后？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！