[RUBY] [Rails] How to change the page title of the browser for each page


スクリーンショット 2020-06-27 10.43.42.png

Development environment

・ Ruby: 2.5.7 Rails: 5.2.4 ・ Vagrant: 2.2.7 -VirtualBox: 6.1 ・ OS: macOS Catalina


The following has been implemented.

Slim introduction


1. Edit ʻapplication_helper.rb`


module ApplicationHelper
  def full_title(page_title = '')
    base_title = "Bookers"
    if page_title.empty?
      "#{ page_title } | #{ base_title }"


** ◎ Set the base title (app name, etc.) and assign it to a variable. ** **

base_title = "Bookers"

** ◎ If the title of each page received as an argument is empty, only the base title is displayed. ** **

if page_title.empty?

** ◎ If the title of each page received as an argument exists, both titles are displayed. ** **

  "#{ page_title } | #{ base_title }"

If page_title is" book list ", it will be displayed as book list | Bookers.

2. Edit the view

① Edit ʻapplication.html.slim`.


/Change before
  | Bookers

/After change
  = full_title(yield(:title))

② Edit the view of each page.

As an example, set the title of books / index.html.slim.


= provide(:title, 'Book list')

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