get a list of all models from rails [duplicate]

Question

I need a list with all models (class_names) which have the pattern "Cube" at the end.

example:

all my models: ModelFoo, ModelBar, ModelBarCube, Mode2BarCube

what I need:

['ModelBarCube', 'Mode2BarCube']

Answer 1

Since Rails doesn't load classes unless it needs them, you must read the models from the folder. Here is the code

Dir.glob(Rails.root + '/app/models/*.rb').each { |file| require file }
  @models = Object.subclasses_of(ActiveRecord::Base).select { |model| 
   model.name[-4..-1] == "Cube"
  } 

Answer 2

in rails 3 you'd swap @models for:

@models = ActiveRecord::Base.subclasses.collect { |type| type.name }.sort

Answer 3

@models = ActiveRecord::Base.descendants.map(&:name)

gives you all the model names which either inherit form ActiveRecord::Base or is a subclass of any existing model.