blocks|key|3787638|text|我正在研究Spree+(+Rails引擎的超级英雄！)，他们在spree_core-0.60.1/lib/spree_core.rb中做到了这一点|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3787639|require+"rails/all"

require+'state_machine'
require+'paperclip'
require+'stringex'
require+'will_paginate'
require+'nested_set'
require+'acts_as_list'
require+'resource_controller'
require+'active_merchant'
require+"meta_search"
require+"find_by_param"|code-block|syntax|javascript|3787640|所以答案是，在你的gem中，你必须一个接一个地要求所有的gem依赖项。好吧，这就是我现在要做的。但如果这一点在未来发生变化，请发表评论。|3787641|entityMap^0|V|Z|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

I'm looking at Spree (the superhero of Rails Engines!), and they do this in <code>spree_core-0.60.1/lib/spree_core.rb</code>:

<pre><code>require "rails/all"

require 'state_machine'
require 'paperclip'
require 'stringex'
require 'will_paginate'
require 'nested_set'
require 'acts_as_list'
require 'resource_controller'
require 'active_merchant'
require "meta_search"
require "find_by_param"
</code></pre>

So the answer is that within your gem, you have to require all of it's gem dependencies one by one. Well, that's how I will do it for now. But please comment if this ever changes in the future.

blocks|key|3502487|text|在main+Rails应用程序启动期间，Bundler只需要Gemfile中直接列出的依赖项，而不需要任何子依赖项。你的库/引擎有责任在需要它的时候请求它的依赖项。你可以在你的中使用初始化器来做到这一点。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3502488|class+MyRailtie+<+Rails::Railtie
++initializer+"require+stuff"+do
++++require+"stuff"
++end
end|code-block|syntax|javascript|3502489|entityMap^0|2G|E|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

During main Rails app boot, Bundler will only require dependencies directly listed in the Gemfile but not any sub-dependencies. It's your library's/Engine's responsibility to require its dependencies when it itself gets required. You can do so using initializers in your Railtie.

<pre><code>class MyRailtie &lt; Rails::Railtie
 initializer "require stuff" do
 require "stuff"
 end
end
</code></pre>

blocks|key|3502539|text|这似乎不起作用，我用Rails3引擎创建了一个宿主项目和一个子项目。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3502540|将宝石添加到引擎的宝石规格|3502541|s.add_dependency+'simple_form'|offset|length|style|CODE|3502542|然后将require添加到engine_name.rb，如下所示|3502543|require+'simple_form'|3502544|但是如果在宿主项目的Gemfile中删除gem+'simple_form‘行，它将立即显示undefined|3502545|entityMap^0|0|0|0|U|0|0|0|L|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|T|8|@$F|U|G|V|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|W|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|X|8|@$F|Y|G|Z|H|I]]|9|@]|A|$]]|$1|N|3|O|5|6|7|10|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|Q|$]]

Seems it don't work, i create a host project and a sub-project with rails 3 engine.

Added the gem to engine's gemspec

<code>s.add_dependency 'simple_form'</code>

then added the require to engine_name.rb like below

<code>require 'simple_form'</code>

But if delete the line [gem 'simple_form'] in host project's Gemfile, it will show undefined immediatly

blocks|key|175979|text|在我们的Rails引擎中，我们使用了一个小技巧来自动要求依赖项。不幸的是，您不能指定是否应该在.gemspec中加载它们，这将允许更好的控制。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|175980|Gem.loaded_specs["our_rails_engine"].dependencies.each+do+%7Cd%7C
++begin
++++require+d.name
++rescue+LoadError+=>+le
++++#+Put+exceptions+here.
++++raise+le+if+d.name+!~+/factory_girl_rails/
++end
end|code-block|syntax|javascript|175981|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In our Rails Engine we used a small trick to require dependencies automatically. Unfortunately you can't specify whether or not they should load in the .gemspec, which would allow for greater control.

<pre><code>Gem.loaded_specs["our_rails_engine"].dependencies.each do |d|
 begin
 require d.name
 rescue LoadError =&gt; le
 # Put exceptions here.
 raise le if d.name !~ /factory_girl_rails/
 end
end
</code></pre>

I have a Rails 3 app that I am turning into a Rails engine / gem.
This engine has some gem dependencies that I have put inside it's .gemspec file.

I have created a new 'parent' Rails 3 app, and I would like to add my engine gem to the Gemfile and have the gem's dependencies automatically 'loaded', but this does not work for me! <code>bundle install</code> installs the gem dependencies fine, but when I start the server, the app crashes because they are not loaded.

For example, my engine's gemspec contains these lines:

<pre><code>s.add_runtime_dependency(%q&lt;rails&gt;, ["= 3.0.7"])
s.add_runtime_dependency(%q&lt;acts_as_commentable&gt;, ["&gt;= 3.0.1"])
s.add_runtime_dependency(%q&lt;haml&gt;, ["&gt;= 3.1.1"])
</code></pre>

.. and the parent Rails 3 application has these lines in its Gemfile:

<pre><code>source 'http://rubygems.org'

gem 'my_engine', :path =&gt; "~/src/gems/my_engine"
</code></pre>

But I get the following error:

<pre><code>undefined local variable or method `acts_as_commentable'
from /home/user/src/gems/my_engine/app/models/account.rb:66:in `&lt;class:Account&gt;'
</code></pre>

But if I add <code>gem 'acts_as_commentable', '&gt;= 3.0.1'</code> to the Gemfile of the parent Rails 3 app, then the gem is loaded and the error disappears.

I am using Rails 3.0.8.

Does anyone have any suggestions? Do I need to change something about the way my engine is loading?

How do I make gemspec dependencies autoload in a Rails 3 app, using a Gemfile

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个Rails 3应用程序，我正在把它变成一个Rails引擎/ gem。这个引擎有一些gem依赖项，我把它们放在它的.gemspec文件中。我已经创建了一个新的'parent‘Rails 3应用程序，我想将我的引擎gem添加到Gemfile中，并让gem的依赖项自动’加载‘，但这对我不起作用！bundle inst...

问如何使用Gemfile在Rails 3应用程序中自动加载gemspec依赖项
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问如何使用Gemfile在Rails 3应用程序中自动加载gemspec依赖项EN