A way to build <title>

Rails
1

I would like to be able to easily build a string. Here is how
I am doing it right now (I have omitted parts not relevant):

In the layout:

<%= title %>

Which calls:

module ApplicationHelper

def title
    @title_parts.join ' | '
end

end

and @title_parts is build like so:

class ApplicationController < ActionController::Base

before_filter :prepare_views

protected

def prepare_views
    # other stuff
    prepend_title t :pnc
end

def prepend_title item
    @title_parts ||= []
    @title_parts.insert 0, item
end

end

class DashboardController < ApplicationController

before_filter :prepare_title

def index
    prepend_title t :home
end

protected

def prepare_title
    prepend_title t :dashboard
end

end

How might I clean this up? My ideal would be for each controller to be
able to call “title” setting its part of the title, and for individual
actions to manually prepend their title part:

class ApplicationController

title t :pnc

end

class DashboardController

title t :dashboard

def index
    prepend_title :home
end

end

Such an approach presents some problems, the first being that “t” is
not available in the class scope. So I’m a bit stuck here.

Thomas

2

Hi Thomas,

How might I clean this up? My ideal would be for each controller to be
able to call “title” setting its part of the title, and for individual
actions to manually prepend their title part:

You may have a look to this screencast from Ryan B. :

Pretty clean and efficient!

Hope it helps :wink:

@lex

3

Thanks, that seems to be the right idea. Here’s what I ultimately
settled on…the following results in “Home | Dashboard | PNC” for a
request to DashboardController#index.

class ApplicationController < ActionController::Base

def self.title item
before_filter do |controller|
controller.instance_eval do
title item
end
end
end

title :pnc

def initialize
@title_parts = []
super
end

protected

def title item
@title_parts.insert 0, item
end

end

module ApplicationHelper

def title
@title_parts.map { |part|
t part
}.join ’ | ’
end

end

class DashboardController < ApplicationController

title :dashboard

def index
title :home
end

end

<%= title %>

Thomas