Class: Module

Inherits:
Object show all
Defined in:
lib/ruby_ext.rb

Overview

Some core ruby extensions

Instance Method Summary collapse

Instance Method Details

#basename ⇒ Object

From the Facets package

returns the name of the class or module without the namespace prefix.



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# File 'lib/ruby_ext.rb', line 55

def basename
  if name and not name.empty?
    name.gsub(/^.*::/, '')
  else
    nil #inspect.gsub('#<','').gsub('>','').sub(':', '_')
  end
end

#insert(new_mod) ⇒ Object

WARNING : This is a dangerous method

It’s like include but changes the order so that the new module is before the older one.



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# File 'lib/ruby_ext.rb', line 23

def insert(new_mod)
  new_mod = new_mod.dup
  old_mod = self
  mod_name = self.basename

  new_mod.module_eval do
    include old_mod
  end

  (nesting[-2] || Object).module_eval do
    remove_const mod_name
    const_set mod_name, new_mod
  end
end

#nesting ⇒ Object

From the Facets package

Returns an array of all the parents in the namespace name.

ex. YourApp::Models::Page #=> [YourApp::Models::Page, YourApp::Models, YourApp]



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# File 'lib/ruby_ext.rb', line 44

def nesting
  n = []
  name.split(/::/).inject(self){ |mod, name| c = mod.const_get(name) ; n << c ; c }
  return n
end

#transfer_classes_to(dest, force = false) ⇒ Object

Utility method to transfer all classes of a module into another. It is useful when you write Camping extensions. cf. other equipments.

I’m using this to override ServerError and NotFound controllers.



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# File 'lib/ruby_ext.rb', line 9

def transfer_classes_to(dest, force=false)
  constants.each do |str|
    k = const_get(str)
    if k.kind_of? Class
      dest.send :remove_const, str if force and dest.const_defined? str
      dest.const_set str, k.dup unless dest.const_defined? str
    end
  end
end