index.rb

# this is an example of composition, we're initializing an instance of a class inside the parent

class Home 
    attr_reader :navbar
    def initialize
        @links = []
        @navbar = Navbar.new
    end
end 

class Navbar 
    def render 
        p "this is a navbar"
    end 
end 

home = Home.new
home.navbar.render

# this is inheritance where we're defining a method in the parent and then inheriting it for the child 

class Home 
    attr_reader :navbar
    def initialize
        @links = []
    end
    def render(type)
        if type == "navbar"
            p "this is a navbar"
        else 
            p "no type passed!"
        end 
    end 
end 


class Navbar < Home
    def initialize 
        super()
    end 
end

navbar = Navbar.new
p navbar
navbar.render("navbar")