How to convert a string to a constant in Ruby?
How to convert the string "User" to User?
Solution 1:
Object.const_get("User")
No need to require ActiveSupport.
Solution 2:
You can use the Module#const_get method. Example:
irb(main):001:0> ARGV
=> []
irb(main):002:0> Kernel.const_get "ARGV"
=> []
Solution 3:
If you have ActiveSupport loaded (e.g. in Rails) you can use
"User".constantize