How do I create a class instance from a string name in ruby?

Question

I have the name of a class and I want to create an instance of that class so that I can loop through each rails attribute that is present in the schema of that class.

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Answer 1

Try this:

Kernel.const_get("MyClass").new

Then to loop through an object's instance variables:

obj.instance_variables.each do |v|
  # do something
end