Rails classes need to be called dynamically sometimes. Learn how to do it using the constantize inflector.
Sometimes you want your class names to be dynamic. Rails has a nice
constantize inflector that makes this easy.
In the simplest of examples, let's just say you have a
"post" string and you want to load the
Post class from it. Something like the following should work great.
str = "post"
new_class_instance = str.constantize.new
We can get a little wild. Let's say you have a multi-word string and want to constantize and then instantiate it.
str = "posts controller"
new_class_instance = str.titleize.gsub(/\ /, '').constantize.new
Essentially, this just shows you want a properly-cased string (the string equivalent of the class name) before you call