在Rails3引擎上要求Haml的最佳方法 [英] Best way to require Haml on Rails3 engines

问题描述

我正在开发Rails3引擎应用程序，并且我想使用Haml作为视图.

I'm developing a Rails3 engine application, and I want to use Haml for the views.

首先，我要做的就是将其添加到引擎Gemfile中:

First, what I have done was to add this to the engine Gemfile:

gem "haml"

当我测试引擎时，它运行正常(我使用了 https://github.com/josevalim /enginex 生成gem并使用虚拟应用程序对其进行测试.

While I was testing my engine, it was working OK (I have used https://github.com/josevalim/enginex to generate the gem and test it with the dummy application).

当我尝试在真实的Rails应用程序上使用引擎时，我的问题开始了.该应用程序自身的Gemfile上没有gem"haml"，因此它没有初始化Haml，所以我收到的模板找不到错误是因为它没有在寻找.haml视图.我在想，通过在引擎上要求Haml，Rails应用程序也需要它.

My problems started when I tried to use the engine on a real Rails application. The application does not have gem "haml" on it's own Gemfile, and so it was not initializing Haml, so I was receiving template not found errors as it was not looking for the .haml views. I was thinking that by requiring Haml on the Engine it would be enought for it to be also required by the Rails application.

我现在要做的是使用以下代码在引擎上添加config/initializers/haml.rb:

What I have done for now was to add a config/initializers/haml.rb on the engine with this code:

require 'haml'
Haml.init_rails(binding)

它现在正在工作，但是我想知道这是否真的是一个好方法. 为什么Rails不会调用Haml"init.rb"文件，而是通过仅将gem"haml"添加到引擎Gemfile来正确初始化Haml?

It's working now, but I'm wondering if this is really a good way to do it. Why Rails is not calling Haml "init.rb" file and so initializing Haml correctly by just adding gem "haml" to the engine Gemfile?

推荐答案

两件事是必要的.首先，在.gemspec中:

Two things are necessary. First, in the .gemspec:

s.add_dependency 'haml', ['>= 3.0.0']

在您的lib/gem_name.rb中:

And in your lib/gem_name.rb:

require 'haml'

然后在gem和应用程序目录中同时运行bundle.

And then run bundle both inside the gem and app directories.

这篇关于在Rails3引擎上要求Haml的最佳方法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！