Constant Reloading

#186

Constant should have a way to specify constantize in a development mode. In development mode the require_path is loaded rather than required, and the constant is removed beforehand... the same way controllers are reloaded.


      # load the require_path in dev mode so that
      # controllers will be reloaded each time
      if development? && const.require_path
        parent = Tap::Support::Constant.constantize(const.nesting) { nil }
        if parent && parent.const_defined?(const.const_name)
          parent.send(:remove_const, const.const_name)
        end
        
        load const.require_path
      end

This is an entirely imperfect system however:

if the file has any side effects, they may not be rolled back (ie anything other than defining the constant)
if the file requires other files, they will not be reloaded (although they should remain active)

Reported by bahuvrihi · March 11th, 2009 @ 02:20 PM

Activity

bahuvrihi

This immediately became an issue with this:


require 'tap/controller'
require 'tap/http/utils'

module Tap
  module Http
    # ::controller
    # ::ubiquity
    class Capture < Tap::Controller
      include Tap::Http::Utils
      
      class << self
        def cmd(what)
          %Q{
            displayMessage("http://localhost:8080/capture/redirect");
            displayMessage(jQuery('body').innerHTML);
}
        end
        
        def preview(what)
          "#{what} is the what"
        end
      end

As a controller, the server tries to unload this. But as a ubiquity command, the file has already been required. As a result, when the controller unloads it cannot be reloaded and I get a dead connection.

Unloading needs to check if the file has already been required... if so, don't unload.

March 11th, 2009 @ 02:44 PM

bahuvrihi
- Assigned user set to bahuvrihi
- State changed from new to resolved
May 3rd, 2009 @ 08:51 AM

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