Decouple Chartkick from Railties?

[dannguyen]

I was hoping to use Chartkick with Padrino, which is a Sinatra-based framework that can be made Rails-like by including ActiveRecord, ActiveSupport, etc.

However, Chartkick won't run without Rack 1.4.5. Padrino requires Rack 1.5, and so I'm getting this error:

Bundler could not find compatible versions for gem "rack":
  In Gemfile:
    chartkick (>= 0) ruby depends on
      rack (~> 1.4.5) ruby

Haven't had a chance to play with Chartkick but it seems like it's something that could run with just ActiveRecord, just like the geocoder gem (https://github.com/alexreisner/geocoder)?

[ankane]

I'll see if I can get it working with Padrino. Don't think it'll be too difficult.

[ankane]

Try the padrino branch https://github.com/ankane/chartkick/tree/padrino

[dannguyen]

Danke! Will let you know how it works

[dannguyen]

A couple of Padrino specific notes:

1. In the Gemfile, padrino must be listed before the chartkick gem or else you'll get this:

      /gems/ruby-1.9.3-head@trawl/bundler/gems/chartkick-54f1691b76f7/lib/chartkick/padrino.rb:2:in `<class:Application>': undefined method `helpers' for Padrino::Application:Class (NoMethodError)
   

2. The Padrino helper javascript_include_tag has apparently a different implementation than in Rails, because:

   <%= javascript_include_tag "//www.google.com/jsapi"%>
   

Resolves to:

   <script src="//www.google.com/jsapi.js" type="text/javascript"></script>

i.e. it wrongly assumes that the call should include the .js extension...This can be "fixed" by prepending the scheme (e.g. https:). Obviously, not chartkick's concern, but just a note for anyone trying to follow the README exactly.

[ankane]

Awesome, thanks for the detailed notes! I'll be sure to add them to the readme before this is merged.