Including problems

ruby-talk
1

I have a file (index.rb) that includes head.rb. head.rb has a class
"Page" and in it, method "start". The problem is that when calling
Page.start I get this error: "uninitialized constant
#<Module:0x2a9e2793f8>::Page (NameError)" it is pretty frustrating, can
anyone tell me whats wrong with it?

2

If you are inside of another modules namespace, maybe you'd need to directly address the Page class you want. Otherwise, please try to cut down the code to a minimal example and post it here.

E.g.

::Page.new.start

hope to help,

Brian

···

On Mon, 21 Feb 2005 06:44:42 +0900 "T E" <thedcm@gmail.com> wrote:

I have a file (index.rb) that includes head.rb. head.rb has a class
"Page" and in it, method "start". The problem is that when calling
Page.start I get this error: "uninitialized constant
#<Module:0x2a9e2793f8>::Page (NameError)" it is pretty frustrating, can
anyone tell me whats wrong with it?

3

index.rb:

require 'head'

Page.start( 'Message Boards', 'Message Boards', nil )

head.rb:

(apache header stuff)
class Page
  def start( page_title = nil, page_header = nil, page_caption = nil )
    puts '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">' +
    '<html xmlns="http://www.w3.org/1999/xhtml">' +
    '<head><title>', page_title, '</title></head>'
  end
end

4

T E wrote:

Page.start( 'Message Boards', 'Message Boards', nil )

This is sending the #start method to Page. In other words, it is calling a class method.

class Page
  def start( page_title = nil, page_header = nil, page_caption = nil )

This defines an _instance_ method of class Page. You can call #start on instances of Page, but not on Page itself.

Maybe what you want is

class Page
   def self.start(...)

5

That works, thanks :slight_smile: