Monday, September 28, 2015
Hi Colin,
-- On Mon, Sep 28, 2015 at 11:00 PM Colin Law <clanlaw@gmail.com> wrote:
I am developing a rails gem. It uses the gon gem so in the gemspec
file I have included
spec.add_dependency 'gon'
Then in the Gemfile for the application using my gem I have put
gem 'my_gem', :path => '/path/to/dir/containing/my_gem'
When I run bundle install I see that it includes my gem and also the
gon gem as expected.
From a view helper in the app I am calling helper method in a module
in my gem's lib folder, and in there I have code such as
gon.variable = ...
and that code throws an error
ActionView::Template::Error (undefined method `gon' for
#<PlotValuesController:0x000000067bbc30>)
where PlotValuesController is the controller in the app. If I
explicitly include gon in the Gemfile for the app then all works as
correctly.
Any suggestions as to why I have to explicitly include gon in the
application's Gemfile, when it is included anyway via the dependency
in my gem?
If I recall correctly, your gem is a Rails engine. It's a bit late and I might be wrong, but a gem doesn't auto require other gems.
So to fix it, you need to require 'gon' in your gem (probably in your lib/your_gem_name.rb file).
A good example is Devise: https://github.com/plataformatec/devise/blob/master/lib/devise.rb. They do also a lot of stuff in between, but you can see the that ir requires the ORM, and Warden and other dependencies.
Hope it works,
// Marco
Gemfile.lock with and without gon included explicitly can be seen at
http://pastebin.com/vzvNgg3K
Colin
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