How to instantiate class from name string in Rails?
klass = Object.const_get "ClassName"about class methods
class KlassExample def self.klass_method puts "Hello World from Class method" endendklass = Object.const_get "KlassExample"klass.klass_methodirb(main):061:0> klass.klass_methodHello World from Class method
Others may also be looking for an alternative that does not throw an error if it fails to find the class. safe_constantize is just that.
class MyClassend"my_class".classify.safe_constantize.new # #<MyClass:0x007fec3a96b8a0>"omg_evil".classify.safe_constantize.new # nil
You can simply convert a string and initialize a class out of it by:
klass_name = "Module::ClassName"klass_name.constantizeTo initialize a new object:
klass_name.constantize.newI hope this turns out to be helpful.Thanks!