从任何控制器调用这些？

Question

I have the following in an initializer:

@fedex ||= Pigeons::Fedex.new(
  ENV['FEDEX_KEY'],
  ENV['FEDEX_PASSWORD'],
  ENV['FEDEX_ACCOUNT'],
  ENV['FEDEX_METER']
)

I basically want to be able to call @fedex.track from any controller.

But right now when I try to call @fedex.track I get NoMethodError: undefined method 'track' for nil:NilClass

So, what am I doing wrong to be able to make that work?

Answer 1

I suppose what DaveNewton is saying is:

FEDEX ||= Pigeons::Fedex.new(
  ENV['FEDEX_KEY'],
  ENV['FEDEX_PASSWORD'],
  ENV['FEDEX_ACCOUNT'],
  ENV['FEDEX_METER']
)

Answer 2

If you really wanted to do what you asked, you could setup a before filter:

class ApplicationController < ActionController::Base
   before_filter :copy_instance_variables_from_initializers

private

  def copy_instance_variables_from_initializers
    TOPLEVEL_BINDING.eval("instance_variables").each |ivar|
      instance_variable_set(ivar.to_s, TOPLEVEL_BINDING.eval(ivar.to_s))
  end

end

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This isn't something you would want to use in production as the other comments/answers show.