Can you eval code in the context of a caller in Ruby?

Question

Essentially I\'m wondering if the following can be done in Ruby.

So for example:

def bar(symbol) 
  # magic code goes here, it outputs \"a = 100\"          


        

Answer 1

Here's a easier syntax hack, using a passed in block binding:

  def loginfo &block
    what = yield.to_s
    evaled = eval(what, block.binding)
    Rails.logger.info "#{what} = #{evaled.inspect}"
  end

called like this:

  x = 1
  loginfo{ :x }

will log out:

  x = 1