Link: alias vs alias_method

If you ever wondered what the difference was, this quick post by Neeraj Singh will show you the difference between alias and alias_method

TL;DR:

• alias_method is slightly more flexible accepting strings or symbols
• alias_method will redefine local methods at runtime - which means you can override the aliased method in a subclass and alias_method will pick this up
• alias will keep the original scope when aliasing - so even if you override the method in a subclass, the aliased method will refer to the parent's original method
• alias works nicer with rdoc

Don't forget to use a comma for alias_method