Module: Rucola::Reloader

Defined in:
lib/rucola/reloader.rb

Overview

The Reloader watches the app/controllers path and reloads a class if it notices that a file has been changed.

Class Method Summary collapse

Class Method Details

.reload(file) ⇒ Object

Reload a file (class).



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# File 'lib/rucola/reloader.rb', line 17

def reload(file)
  klass = File.to_const(file)
  begin
    File.read(file).parse_to_nodes
    
    log.debug "Reloading class #{klass.name}:"
    
    i_methods = klass.instance_methods(false)
    log.debug "- Undefining instance methods: #{i_methods.inspect}"
    i_methods.each { |mname| klass.send(:undef_method, mname) }
    
    c_methods = klass.original_class_methods
    log.debug "- Undefining class methods: #{c_methods.inspect}"
    c_methods.each { |mname| klass.metaclass.send(:undef_method, mname) }
    
    Kernel.load(file)
  rescue SyntaxError => e
    log.error "WARNING: Reloading the class #{klass.name} would have caused a parse error:\n#{e.message}"
  end
end

.start! ⇒ Object

Start watching app/controllers for a file modification and reload that class.



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# File 'lib/rucola/reloader.rb', line 10

def start!
  Rucola::FSEvents.start_watching(Rucola::RCApp.controllers_path, Rucola::RCApp.models_path) do |events|
    events.each { |event| reload(event.last_modified_file) }
  end
end