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How to convert the string "User" to User?
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No need to require ActiveSupport. Usage example: class User; def self. lookup; const_get('SomeClassName);end; end User. lookup will return class itself.
Ruby ConstantsConstants begin with an uppercase letter. Constants defined within a class or module can be accessed from within that class or module, and those defined outside a class or module can be accessed globally. Constants may not be defined within methods.
The :: is a unary operator that allows: constants, instance methods and class methods defined within a class or module, to be accessed from anywhere outside the class or module.
Object.const_get("User") No need to require ActiveSupport.
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