Understanding the basic inheritance in Ruby on Rails

Question

I am new to Ruby on Rails Development and was trying to understand inheritance in Rails, I understood how do a class inherit from a parent class

For Example MyController < ActionController, in this Action Controller is the parent class. But I dont understand this syntax

ApplicationController < ActionController::Base

Specifically what is the purpose of ::Base

Code tends to be organised into Classes or Modules. Classes follow inheritance rules, and can be instantiated into instances, whereas modules are more like a simple collection of code. Sometimes classes are collected into modules to achieve the namespacing Marek refers to: that is the case here: "ActionController" is a module and "Base" is a class inside that module (the class that your app controllers inherit from). — Max Williams
– Max Williams, Commented Aug 5, 2014 at 13:09
Btw, it's informative to look through the codebase. have a look in your gems folder for the ActionController module. — Max Williams
– Max Williams, Commented Aug 5, 2014 at 13:16
can you please let me know where will this gems folder will be located and in which gem ActionController module is there? — user3726986
– user3726986, Commented Aug 5, 2014 at 13:19

Marek Lipka · Accepted Answer · 2014-08-05 13:03:15Z

2

This syntax is used to indicate that Base is a class inside of ActionController namespace.

answered Aug 5, 2014 at 13:03

Marek Lipka

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