On Fri, Oct 16, 2009 at 12:16 AM, B. Ohr <span dir="ltr">&lt;<a href="mailto:jazzbox@7zz.de">jazzbox@7zz.de</a>&gt;</span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div style="word-wrap:break-word"><br><div><div>Am 16.10.2009 um 04:55 schrieb s.ross:</div><div><div></div><div class="h5"><br><blockquote type="cite"><div style="word-wrap:break-word"><div><div>On Oct 15, 2009, at 6:10 PM, Conrad Taylor wrote:</div>
<br><blockquote type="cite">On Thu, Oct 15, 2009 at 5:03 PM, s.ross <span dir="ltr">&lt;<a href="mailto:cwdinfo@gmail.com" target="_blank">cwdinfo@gmail.com</a>&gt;</span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

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On Oct 15, 2009, at 1:43 PM, Laurent Sansonetti wrote:<br>
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<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Craig,<br>
<br>
On Oct 14, 2009, at 7:07 PM, Craig Williams wrote:<br>
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<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Everyone,<br>
<br>
I have searched the web but have not found a good explanation on how to use<br>
gems in a MacRuby project. Is there a tutorial I am missing?<br>
</blockquote>
<br>
We should definitely write a tutorial about that. The RubyGems support is pretty new so I don&#39;t think anybody tried yet to embed gems in a MacRuby app. At a glance I believe it would be a matter of installing the gem inside MacRuby.framework, embed it in the app then change the GEM_HOME environment variable.<br>


<br>
Laurent<br>
</blockquote>
<br></div>
Oof. Changing the framework? Maybe I&#39;m not understanding what you&#39;re suggesting. Why would it not be enough to install all gems in a vendor/ directory and change GEM_HOME to there? Or something that would not involve embedding (eventually) all gems in use in all apps you&#39;re developing inside the MacRuby.framework...<br>


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Steve<div><div></div><div><br></div></div></blockquote><div><br></div><div>Steve, you should be able to install the gem(s) and require them in the relevant file(s).  You shouldn&#39;t have to unpack the gem(s) into a vendor directory because they should be visible to the Ruby environment after you require it.</div>

<div><br></div><div>-Conrad</div></div></blockquote></div><br><div>Conrad--</div><div><br></div><div>I guess I&#39;m thinking of a case where you didn&#39;t want to rely on a particular gem being present on a target machine -- say for an app you were distributing. Naturally, the GEM_HOME built into MacRuby is just fine on *my* machine. But, if I give the app to someone else who may not have a particular gem installed, boom!</div>
<div><br></div><div>Steve</div></div></blockquote></div></div></div><br><div>Steve,</div><div><br></div><div>another solution would be, that somebody writes a gem-helper, which loads the required gems interactively into macgem when they are missing. This helper should have a Cocoa-UI for the unexperienced user outside and is called at program startup. Upgrading gems and testing a required version are possible features of such a helper.</div>
<div><br></div><div>Bernd</div><div><br></div><div><br></div></div></blockquote><div><br></div><div>Hi, you can actually find something like this in Rails as a rake task, &#39;rake gems:install&#39;.  Thus, you can take a look at the boot.rb within the config directory.  Now, one can simply adapt the environment.rb file from rails for loading gems and other components:</div>
<div><br></div><div><div><div># Be sure to restart your server when you modify this file</div><div><br></div><div># Specifies gem version of Rails to use when vendor/rails is not present</div><div>RAILS_GEM_VERSION = &#39;2.3.4&#39; unless defined? RAILS_GEM_VERSION</div>
<div><br></div><div># Bootstrap the Rails environment, frameworks, and default configuration</div><div>require File.join(File.dirname(__FILE__), &#39;boot&#39;)</div><div><br></div><div>Rails::Initializer.run do |config|</div>
<div>  # Settings in config/environments/* take precedence over those specified here.</div><div>  # Application configuration should go into files in config/initializers</div><div>  # -- all .rb files in that directory are automatically loaded.</div>
<div><br></div><div>  # Add additional load paths for your own custom dirs</div><div>  # config.load_paths += %W( #{RAILS_ROOT}/extras )</div><div><br></div><div>  # Specify gems that this application depends on and have them installed with rake gems:install</div>
<div>  config.gem &quot;hpricot&quot;, :version =&gt; &#39;0.6&#39;, :source =&gt; &quot;<a href="http://code.whytheluckystiff.net">http://code.whytheluckystiff.net</a>&quot;</div><div>  config.gem &quot;sqlite3-ruby&quot;, :lib =&gt; &quot;sqlite3&quot;</div>
<div>  config.gem &quot;aws-s3&quot;, :lib =&gt; &quot;aws/s3&quot;</div><div><br></div><div>  # Only load the plugins named here, in the order given (default is alphabetical).</div><div>  # :all can be used as a placeholder for all plugins not explicitly named</div>
<div>  # config.plugins = [ :exception_notification, :ssl_requirement, :all ]</div><div><br></div><div>  # Skip frameworks you&#39;re not going to use. To use Rails without a database,</div><div>  # you must remove the Active Record framework.</div>
<div>  # config.frameworks -= [ :active_record, :active_resource, :action_mailer ]</div><div><br></div><div>  # Activate observers that should always be running</div><div>  # config.active_record.observers = :cacher, :garbage_collector, :forum_observer</div>
<div><br></div><div>  # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.</div><div>  # Run &quot;rake -D time&quot; for a list of tasks for finding time zone names.</div><div>  config.time_zone = &#39;UTC&#39;</div>
<div><br></div><div>  # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.</div><div>  # config.i18n.load_path += Dir[Rails.root.join(&#39;my&#39;, &#39;locales&#39;, &#39;*.{rb,yml}&#39;)]</div>
<div>  # config.i18n.default_locale = :de</div><div><br></div><div>end</div></div></div><div><div><br></div><div>Now, you simply need to execute the following command to install the missing components before starting the app:</div>
<div><br></div><div>rake gems:install</div><div><br></div><div>Otherwise, you can create an application subdirectory called lib which is added to your load path when your application</div><div>is started.  For example,</div>
<div><br></div><div>library_paths = []</div><div>library_paths &lt;&lt; &quot;#{FILE.dirname(__FILE__)}/lib/some_library_one&quot;</div><div>library_paths &lt;&lt; &quot;#{FILE.dirname(__FILE__)}/lib/some_library_two&quot;</div>
<div>library_paths &lt;&lt; &quot;#{FILE.dirname(__FILE__)}/lib/some_library_three&quot;</div><div>...</div><div><br></div><div>library_paths.each do | library_path |</div><div>  $:.unshift( library_path ) if File.directory?( library_path )</div>
<div>end</div><div><br></div><div>Now, you can throw all this into some type of dependencies.rb file that gets loaded before application starts.  This may be a better approach to</div><div>follow for end users instead of expecting them to execute a command before application starts.  Thus, you can adapt the above library_path</div>
<div>example to install gems as well if your application depends on them.  Finally, you may want to also look at the Rubygems API because it does </div><div>all this stuff and more for managing gems.</div><div><br></div><div>
Good luck,</div><div><br></div><div>-Conrad</div><div><br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div style="word-wrap:break-word"><div><br></div>
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