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How to create and use variable in VIews Template in Rails ?

Tags:

ruby

ruby-on-rails

I am still new to ruby and rails and is looking to create a variable so I can use it over and over again in the views template. For example,my code right now is 

<title>Home Page</title>
<h3>Welcome to my Home Page</h3>

Now I want to make this "Home Page" as variable or symbol so I can just use that variable/symbol rather than typing the string over and over, how to do it ?

Thanks

like image 669
iCyborg Avatar asked Mar 02 '13 07:03

iCyborg

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1 Answers

When I first read your question, I thought you were asking for this, but I realize this is different.

Michael Hartl's amazing Ruby-on-Rails Tutorial demonstrates my favorite method for doing this, which is to create an instance variable that gets referenced in the layout exactly the way you want.

rails_root/app/controllers/application_controller.rb

class ApplicationController < ActionController::Base
  protect_from_forgery
  attr_accessor :extra_title
  ...

That makes @extra_title accessible in all controllers. Now inside one particular controller:

rails_root/app/controllers/things_controller.rb

class ThingsController < ApplicationController

  def index
    @extra_title = "| Things"
    ...

Ok, so what is this all for? Oh right, we wanted to use this in a layout:

rails_root/app/views/layouts/application.html.erb

<!DOCTYPE html>
<html>
<head>
  <title>Best. App. Ever. <%= @extra_title %></title>
...

And now you're riding the Rails.

like image 120
Austin Mullins Avatar answered Sep 23 '22 17:09

Austin Mullins
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