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I am trying to create a new class to that will inherit from ActiveRecord::Base the class needs to be dynamically generated from a string "general_systems".camelize.singularize = Class.new < ActiveRecord::Base However I keep getting the error: undefined method `singularize=' for "GeneralSystems":String I've also tried to constantize the string >> foo = "general_systems".camelize.singularize => "GeneralSystem" >> foo.constantize NameError: uninitialized constant GeneralSystem from /var/lib/gems/1.9.1/gems/activesupport-3.0.5/lib/active_support/inflector/methods.rb:124:in `block in constantize' from /var/lib/gems/1.9.1/gems/activesupport-3.0.5/lib/active_support/inflector/methods.rb:123:in `each' from /var/lib/gems/1.9.1/gems/activesupport-3.0.5/lib/active_support/inflector/methods.rb:123:in `constantize' from /var/lib/gems/1.9.1/gems/activesupport-3.0.5/lib/active_support/core_ext/string/inflections.rb:43:in `constantize' from (irb):4 from /usr/bin/irb:12:in `<main>' >> foo.constantize = Class.new NoMethodError: undefined method `constantize=' for "GeneralSystem":String from (irb):5 from /usr/bin/irb:12:in `<main>' Any help would be greatly appreciated.

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