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POBuilding and requiring a gem
 

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  1. POBuilding and requiring a gem
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    <p>I built a gem called prawn_charts and can successfully require the module that wraps all the classes (the classes are all in different files) and the classes from the root directory of the project with this command in irb:</p> <pre><code>require "./lib/prawn_charts.rb" </code></pre> <p>However, when I create the gem with <code>$ rake build</code> and <code>$ rake install</code>, cd to my home directory, and require the gem in irb, I can only load the wrapper module and not any of the individual classes:</p> <pre><code>~ $ irb &gt;&gt; require 'prawn_charts' =&gt; true &gt;&gt; PrawnCharts # this works =&gt; PrawnCharts &gt;&gt; PrawnCharts::YLabelsDataCollector # don't know why this causes an error NameError: uninitialized constant PrawnCharts::YLabelsDataCollector </code></pre> <p>Here is what the <code>lib/prawn_charts.rb</code> file looks like:</p> <pre><code>require 'prawn' require_relative "./prawn_charts/version" module PrawnCharts end # this loads PrawnCharts::YLabelsDataCollector Dir["./lib/data_collectors/**/*.rb"].each {|file| require file } Dir["./lib/renderers/**/*.rb"].each {|file| require file } </code></pre> <p>I also have this line in the gemspec file:</p> <pre><code>gem.files = `git ls-files`.split($/) </code></pre> <p>EDIT:</p> <p>This is what I should have had in <code>lib/prawn_charts.rb</code>:</p> <pre><code>lib_path = File.expand_path(File.dirname(__FILE__)) Dir["#{lib_path}/prawn_charts/data_collectors/**/*.rb"].each {|file| require file } Dir["#{lib_path}/prawn_charts/renderers/**/*.rb"].each {|file| require file } </code></pre>
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    1. CO1.Can you make sure `Dir["./lib/data_collectors/**/*.rb"]` really returns the file you want? 2.where is `YLabelsDataCollector ` defined?
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      1. USMike Li
    2. CO@MikeLi - I checked and Dir["./lib/data_collectors/**/*.rb"]` returns all the files I want. `YLabelsDataCollector` is defined here: `/lib/data_collectors/graph/y_labels_data_collector.rb`. The files are all being loaded properly when I work within the gem. It is just when I package the gem officially and require it in another directory when I run into problems. Thanks.
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    3. CO@MikeLi - actually, you were right, I didn't load the files properly. My loading solution worked in the project root directory, but not any other directory. Thanks again for the help.
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      1. POBuilding and requiring a gem
      1. USPowers
 

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