gem_original_require': no such file to load -- sinatra (LoadError)

Question

I'm working on my local machine. If I use a Sinatra app I have no problem adding this line to myapp.rb

require 'sinatra'

When I go to the console and I run

irb -r myapp.rb

I get this error

gem_original_require': no such file to load -- sinatra (LoadError)

I understand that either my IRB or Ruby path is not looking right. I am using (Simple Ruby Version Management: rbenv) to manage the Ruby environment not too sure if this affects things? I ran the gem env and I got this.

RubyGems Environment:  
  - RUBYGEMS VERSION: 1.8.10  
  - RUBY VERSION: 1.9.2 (2011-07-09 patchlevel 290) [x86_64-darwin11.0.1]  
  - INSTALLATION DIRECTORY: /Users/Air/.rbenv/versions/1.9.2-p290/lib/ruby/gems/1.9.1  
  - RUBY EXECUTABLE: /Users/Air/.rbenv/versions/1.9.2-p290/bin/ruby  
  - EXECUTABLE DIRECTORY: /Users/Air/.rbenv/versions/1.9.2-p290/bin  
  - RUBYGEMS PLATFORMS:  
    - ruby  
    - x86_64-darwin-11  
  - GEM PATHS:  
     - /Users/Air/.rbenv/versions/1.9.2-p290/lib/ruby/gems/1.9.1  
     - /Users/Air/.gem/ruby/1.9.1  
  - GEM CONFIGURATION:  
     - :update_sources => true  
     - :verbose => true  
     - :benchmark => false  
     - :backtrace => false  
     - :bulk_threshold => 1000  
  - REMOTE SOURCES:  
     - http://rubygems.org/  

Solution 1

Try:

irb -r ./myapp.rb

If you're using a config.ru file, that path should be reflected there as well.

Solution 2

In my case I was using rvm. Even though I configured and .rvmrc file and assured I was using a proper gemset with sinatra installed, I kept having the same error.

Then I tried installing sinatra in my native ruby version:

gem install sinatra

I had to install the sqlite adapter as well for the sinatra app I was trying to run:

gem install sqlite3

Finally I got to run the scanty blog (https://github.com/rodrigomes/scanty) with:

ruby main.rb

It worked but I don't think it is the best solution.

Comments

[Casper]

Did you add require 'rubygems' before you require sinatra in your myapp.rb file?