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<title>Bundler: The best way to manage a Ruby application's gems</title>
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<h2>Using Groups</h2>
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Grouping your dependencies allows you
to perform operations on the entire
group.
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<pre class="highlight ruby"><span class="c1"># These gems are in the :default group</span>
<span class="n">gem</span> <span class="s1">'nokogiri'</span>
<span class="n">gem</span> <span class="s1">'sinatra'</span>

<span class="n">gem</span> <span class="s1">'wirble'</span><span class="p">,</span> <span class="ss">:group</span> <span class="o">=></span> <span class="ss">:development</span>

<span class="n">group</span> <span class="ss">:test</span> <span class="k">do</span>
 <span class="n">gem</span> <span class="s1">'faker'</span>
 <span class="n">gem</span> <span class="s1">'rspec'</span>
<span class="k">end</span>

<span class="n">group</span> <span class="ss">:test</span><span class="p">,</span> <span class="ss">:development</span> <span class="k">do</span>
 <span class="n">gem</span> <span class="s1">'capybara'</span>
 <span class="n">gem</span> <span class="s1">'rspec-rails'</span>
<span class="k">end</span>

<span class="n">gem</span> <span class="s1">'cucumber'</span><span class="p">,</span> <span class="ss">:group</span> <span class="o">=></span> <span class="o">[</span><span class="ss">:cucumber</span><span class="p">,</span> <span class="ss">:test</span><span class="o">]</span>
</pre>
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<div class='bullet'>
<div class='description'>
Install all gems, except those in the
listed groups. Gems in at least one
non-excluded group will still be installed.
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<pre class="highlight plaintext">$ bundle install --without test development
</pre>
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Require the gems in particular groups,
noting that gems outside of a named group
are in the :default group
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<pre class="highlight ruby"><span class="no">Bundler</span><span class="p">.</span><span class="nf">require</span><span class="p">(</span><span class="ss">:default</span><span class="p">,</span> <span class="ss">:development</span><span class="p">)</span>
</pre>
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<div class='description'>
Require the default gems, plus the gems
in a group named the same as the current
Rails environment
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<pre class="highlight ruby"><span class="no">Bundler</span><span class="p">.</span><span class="nf">require</span><span class="p">(</span><span class="ss">:default</span><span class="p">,</span> <span class="no">Rails</span><span class="p">.</span><span class="nf">env</span><span class="p">)</span>
</pre>
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<div class='bullet'>
<div class='description'>
Restrict the groups of gems that you
want to add to the load path. Only gems
in these groups will be require'able
</div>
<pre class="highlight ruby"><span class="nb">require</span> <span class="s1">'rubygems'</span>
<span class="nb">require</span> <span class="s1">'bundler'</span>
<span class="no">Bundler</span><span class="p">.</span><span class="nf">setup</span><span class="p">(</span><span class="ss">:default</span><span class="p">,</span> <span class="ss">:ci</span><span class="p">)</span>
<span class="nb">require</span> <span class="s1">'nokogiri'</span></pre>
<a href="/v1.2/bundler_setup.html">Learn More: Bundler.setup</a>
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