Module: GemReloader

Defined in:
lib/gem_reloader.rb,
lib/gem_reloader/version.rb

Constant Summary collapse

VERSION = 
"0.0.2"

Class Method Summary collapse

Class Method Details

.watch(gem_symbol) ⇒ Object

Watch a specific gem. Add something like ‘GemReloader.watch :my_gem’ to your development.rb.



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# File 'lib/gem_reloader.rb', line 18

def self.watch(gem_symbol)
  
  gem_path = gem_symbol.to_s
  klass = gem_path.classify
  
  app = Object.const_get(Rails.application.class.parent_name)
  app::Application.configure do
  
    ActionDispatch::Callbacks.to_prepare do
      
      # This code (slightly modified) comes almost entirely from
      # Tim Cardenas - http://timcardenas.com/automatically-reload-gems-in-rails-327-on-eve

      # If the gem's top level module is currently loaded, unload it
      if Object.const_defined?(klass)
        Object.send(:remove_const, klass)
      end

      # Instruct ruby to "unrequire" all of the gems files.
      # CAREFUL: make sure this only matches your gems files.
      $".delete_if {|s| s.include?(gem_path)}

      # Re-require your gem 
      # Note: because we removed all files previously required they will be reloaded
      # even if you didn't use load/autoload in your gem.
      require gem_path

    end
    
  end
end

.watch_all! ⇒ Object

All local gems (that is, ones which have a :path attribute) will be automatically reloaded on each request.

Add something like ‘GemReloader.watch_all!’ to your development.rb.



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# File 'lib/gem_reloader.rb', line 10

def self.watch_all!
  reloadable_gems.each do |gem|
    watch gem[:name]
  end
end