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<title>rails-cmds - RDoc Documentation</title>
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<h3>Table of Contents</h3>
<ul class="link-list" role="directory">
<li><a href="#label-1+-+Look+at+source+code+for+the+current+bundle+gem+version">1 - Look at source code for the current bundle gem version</a>
<li><a href="#label-2+-+Get+recursive+list+of+dependent+gem+versions">2 - Get recursive list of dependent gem versions</a>
<li><a href="#label-2a+-+Generate+PNG+of+gem+dependencies+in+Gemfile">2a - Generate PNG of gem dependencies in Gemfile</a>
<li><a href="#label-3+-+Rails+console">3 - Rails console</a>
<li><a href="#label-4+-+Run+functional+tests+for+only+1+controller">4 - Run functional tests for only 1 controller</a>
<li><a href="#label-5+-+Put+-3C-25+debugger+-25-3E+tags+in+-27.erb-27+code">5 - Put <% debugger %> tags in '.erb' code</a>
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<li><a href="./big-data_txt.html">big-data</a>
<li><a href="./coffeescript_txt.html">coffeescript</a>
<li><a href="./git-cmds_txt.html">git-cmds</a>
<li><a href="./home_txt.html">home</a>
<li><a href="./java_txt.html">java</a>
<li><a href="./mac-cmds_txt.html">mac-cmds</a>
<li><a href="./metaprogramming_txt.html">metaprogramming</a>
<li><a href="./opensource-projects_txt.html">opensource-projects</a>
<li><a href="./psql_txt.html">psql</a>
<li><a href="./python_txt.html">python</a>
<li><a href="./rails-cmds_txt.html">rails-cmds</a>
<li><a href="./rails_txt.html">rails</a>
<li><a href="./railscasts/railsCasts2013-14_txt.html">railsCasts2013-14</a>
<li><a href="./railscasts/railsCasts2015_txt.html">railsCasts2015</a>
<li><a href="./railscasts/railsCasts2016_txt.html">railsCasts2016</a>
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<li><a href="./spree-methods_txt.html">spree-methods</a>
<li><a href="./sql_txt.html">sql</a>
<li><a href="./static-website_txt.html">static-website</a>
<li><a href="./tdd_txt.html">tdd</a>
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<main role="main" aria-label="Page rails-cmds.txt">
<h1 id="label-1+-+Look+at+source+code+for+the+current+bundle+gem+version">1 - Look at source code for the current bundle gem version<span><a href="#label-1+-+Look+at+source+code+for+the+current+bundle+gem+version">¶</a> <a href="#top">↑</a></span></h1>
<p>$ bundle open <gem name>;</p>
<pre>Ctl-O = Return back to Netrw dir listing</pre>
<h1 id="label-2+-+Get+recursive+list+of+dependent+gem+versions">2 - Get recursive list of dependent gem versions<span><a href="#label-2+-+Get+recursive+list+of+dependent+gem+versions">¶</a> <a href="#top">↑</a></span></h1>
<p>$ gem lock rails-3.2.13;</p>
<h2 id="label-2a+-+Generate+PNG+of+gem+dependencies+in+Gemfile">2a - Generate PNG of gem dependencies in Gemfile<span><a href="#label-2a+-+Generate+PNG+of+gem+dependencies+in+Gemfile">¶</a> <a href="#top">↑</a></span></h2>
<p>$ bundle viz;</p>
<h1 id="label-3+-+Rails+console">3 - Rails console<span><a href="#label-3+-+Rails+console">¶</a> <a href="#top">↑</a></span></h1>
<p>Get nice output in console (YAML output of last command)</p>
<pre>> y _</pre>
<p>Find exact location of a method</p>
<pre>> method(:app).source_location
=> ["/Users/doug/.rvm/gems/ruby-2.2.1/gems/railties-4.2.1/lib/rails/console/app.rb", 8]
> app.method(:get).source_location
=> ["/Users/doug/.rvm/gems/ruby-2.2.1/gems/actionpack-4.2.1/lib/action_dispatch/testing/integration.rb", 31]</pre>
<p>'app' method gives you an integration session instance, so you can
use it just like when you’re a normal integration test for Rails.</p>
<pre>> app.class
=> ActionDispatch::Integration::Session</pre>
<p>Get list of methods associated with asset pipeline</p>
<pre>> Rails.application.methods.each do |method| puts method if method =~ /asset/ end;nil</pre>
<p>Get asset file contents</p>
<pre>https://github.com/sstephenson/sprockets
'find_asset' method (aliased as []) to retrieve an asset from a Sprockets environment.
> Rails.application.assets.class
=> Sprockets::Environment
Pass it a logical path and you'll get a Sprockets::BundledAsset (Call 'to_s' on the resulting asset to access its contents)
> Rails.application.assets['spree/frontend/product.js'].to_s</pre>
<h1 id="label-4+-+Run+functional+tests+for+only+1+controller">4 - Run functional tests for only 1 controller<span><a href="#label-4+-+Run+functional+tests+for+only+1+controller">¶</a> <a href="#top">↑</a></span></h1>
<p>ruby -I test test/functional/globes_controller_test.rb;</p>
<pre>(The '-I test' adds the test env into the ruby $LOAD_PATH)</pre>
<h1 id="label-5+-+Put+-3C-25+debugger+-25-3E+tags+in+-27.erb-27+code">5 - Put <% debugger %> tags in '.erb' code<span><a href="#label-5+-+Put+-3C-25+debugger+-25-3E+tags+in+-27.erb-27+code">¶</a> <a href="#top">↑</a></span></h1>
<pre>(rdb) info variables
(rdb:1) bt
If you are in a View and want to see whole callstack, including the Controller, then DELIBERATELY PUT INCORRECT OBJECT NAME in 'erb'</pre>
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