Ruby on Rails: Where to define global constants?

Ruby on Rails: Where to define global constants?

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Accessing a class's constants

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Where's the best place to define a constant in a Ruby on Rails application?

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What is the best way to handle constants in Ruby when using Rails?

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Where/How to code Constants in Rails 3 Application [duplicate]

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Rails autoloading fully capitalized name like API

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Access model-specific constants in a Rails view

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Best way to handle view and helper-only constants in Rails

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ruby on rails, colon at back or front of variables

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constant values in Rails

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Internationalization for constants-hashes in rails 3

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RAILS_ROOT require?

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How do you store custom constants in Rails 4?

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Validate model field: if value equals a key in a hash

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