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go from model to associated table name and back (See related posts)

Given a table object, it returns the related string object; e.g. SubAttribute => 'sub-attribute'. Useful if you want to make a list of all your tables with perhaps their fields listed out to the side.

def stringify_table( table, replace_char = '-', pluralize = false )
  string = table.to_s.gsub( /([A-Za-z])([A-Z])/, '\1' << replace_char.to_s << '\2' )
  string = string.pluralize if pluralize
  string
end


Given a string akin to the name of a table, it returns the related table object; e.g. 'sub_attributes' => SubAttribute.

def tablify_string( string )
  eval( string.to_s.gsub( /_id/, '' ).singularize.split( '_' ).collect { |word| word.capitalize }.join )
end
to ruby rails object string table activerecord dynamic model eval by moneypenny on Fri Jun 02 20:50:06 -0400 2006

Comments on this post

cayblood posts on Aug 28, 2006 at 13:15
Where is the best place to add these methods? app/controllers/application.rb?
moneypenny posts on Aug 31, 2006 at 18:11
That's generally where I put them, yes. It just depends on the scope of where you need them, however. If you're only going to use them in, say, FuzzyController, then put them there. I put them in ApplicationController because I use them in various places throughout my other controllers.

If you need them in both helpers and controllers, it's best to put them in app/helpers/application_helper.rb and then use this tutorial to make them accessible inside controllers.
Flenser posts on Nov 26, 2007 at 12:44
There are Rails helpers for these functions: classify and tableize. No need to write your own!

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