在变色龙中使用基本布局模板 [英] using base layout templates in chameleon

问题描述

在金字塔文档中，这里有一个关于UX的不错的教程:

In the pyramid docs there is a nice tutorial on UX stuff here:

http://docs.pylonsproject. org/projects/pyramid_tutorials/zh-CN/latest/humans/creatingux/step07/index.html

我注意到的一件事是，在本教程中，它们正在代码中显式设置和传递全局布局"(请参见下文).我认为这是不常见且不必要的，因为我一直只使用加载"命令，如此处的文档所示:

One thing I noticed though is in the tutorial they are setting up and passing around the 'global layout' explicitly in the code (see below). I thought this was unusual and unnecessary because I've always just used the 'load' command as shown in the docs here:

http://chameleon.repoze.org/docs/latest/

这仅仅是个人喜好问题，还是以这种方式设置和使用全局布局"有真正的优势吗?

Is this just a personal preference issue or are there real advantages to setting up and using the 'global layout' in this way?

教程基础视图类:

class Layouts(object):
    @reify
    def global_template(self):
        renderer = get_renderer("templates/global_layout.pt")
        return renderer.implementation().macros['layout']

教程模板文件:

<div metal:use-macro="view.global_template">
    <div metal:fill-slot="content">
        <p>Home page content goes here.</p>
    </div>
</div>

但是在我的模板文件中，我只是使用:

But in my template files I just use:

<div metal:use-macro="load: global_layout.pt">
    <div metal:fill-slot="content">
        <p>Home page content goes here.</p>
    </div>
</div>

推荐答案

间接方式(通过视图)可为您提供更大的灵活性.在一个小型项目中，收益并不是那么明显，但是这种方法肯定会在一个较大的项目中获得回报. "load:"正在将您的main_template(用Zope/Plone说话)编码为在此处.使用该视图，它可以来自任何地方，并且可以独立于模板进行更改.

The indirect way (via view) gives you more flexibility. The benefits are not so obvious in a small project, but this approach surely pays off in a larger one. The "load:" is harcoding your main_template (in Zope/Plone-speak) to be here. With the view, it can come from anywhere and changed independently of your templates.

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