动态地添加区域到木偶版布局 [英] Dynamically add regions to Marionette layout

问题描述

我有一个布局，但不能提前定义所有的区域，因为它们不知道。

所以稍后在一个ItemView被创建，我想使用视图的ID作为区域的名称在布局中创建一个新的区域，所以我可以这样说：

  layout.dynamicRegionName。显示（newItemView）; 
  

但是这里有循环依赖。

1. 我还没有呈现视图，所以我不能引用它的DOM元素来在布局的调用.addRegion（）




2. 我无法渲染它，正是因为我希望通过调用它来通过动态添加的区域附加到DOM树。 show（）

@DerickBailey在github中的Marionette.Layout文档中我相信在示例中有一个错误有： layout.show（new MenuView（））;

但从技术上讲，这接近于我们需要在这里，即能够做到：

  layout.addRegion（VAR_WITH_NEW_REGION_NAME，aViewInstance）; 
  

并将其添加到其中的布局渲染直接在视图实例中。 >

我是否缺少一些其他明显的方法来实现？这是一个已知的缺失功能吗？有没有理由没有吗？

我知道这个以前的问题：动态地向布局添加/删除区域
但没有看到任何明确/明确的答案。

解决方案

Marionette v1.0（v1.0.2是最新的，现在）支持Layouts中的动态区域。

  
 var MyLayout = Marionette.Layout.extend（{
 template：＃some-template
}）; 
 
 var layout = new MyLayout（）; 
 layout.render（）; 
 
 layout.addRegion（someRegion，＃some-element）; 
 
 layout.someRegion.show（new MyView（））; 
  

I have a layout, but cannot define all of its regions in advance because they are not known.

So later on an ItemView is created and I'd like to create a new region in the layout using the view's ID as the region's name so I can then say:

layout.dynamicRegionName.show(newItemView);

But there is cyclic dependency here.

1. I haven't rendered the view yet, so I cannot make a reference to its DOM element to be used in the layout's call to .addRegion()

2. I cannot render it, precisely because I want it to get attached to the DOM tree through the dynamically added region by calling its .show()

@DerickBailey In the Marionette.Layout docs in github I believe there is an error in the example that has: layout.show(new MenuView());

but technically this is close to what we'd need here i.e. to be able to do:

layout.addRegion(VAR_WITH_NEW_REGION_NAME, aViewInstance);

and have this add a new Region into the layout rendering inside it directly the view instance.

Am I missing some other obvious way to achieve this? Is that a known missing functionality? Is there a reason not to have it?

I'm aware of this previous Q: "Dynamically add/remove regions to a layout" but don't see any clear/definite answer to it.

解决方案

Marionette v1.0 (v1.0.2 is latest, right now) supports dynamic regions in Layouts.

var MyLayout = Marionette.Layout.extend({
  template: "#some-template"
});

var layout = new MyLayout();
layout.render();

layout.addRegion("someRegion", "#some-element");

layout.someRegion.show(new MyView());

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