I'm referring to the modules you create in app/helpers
. Are they available in:
What are helpers in Rails? A helper is a method that is (mostly) used in your Rails views to share reusable code. Rails comes with a set of built-in helper methods. One of these built-in helpers is time_ago_in_words .
Custom helpers for your application should be located in the app/helpers directory.
In Rails 5 all Helpers are available to all Views and all Controllers, and to nothing else.
http://api.rubyonrails.org/classes/ActionController/Helpers.html
These helpers are available to all templates by default.
By default, each controller will include all helpers.
In Views you can access helpers directly:
module UserHelper
def fullname(user)
...
end
end
# app/views/items/show.html.erb
...
User: <%= fullname(@user) %>
...
In Controllers you need the #helpers
method to access them:
# app/controllers/items_controller.rb
class ItemsController
def show
...
@user_fullname = helpers.fullname(@user)
...
end
end
You can still make use of helper modules in other classes by include
ing them.
# some/other/klass.rb
class Klass
include UserHelper
end
The old behavior was that all helpers were included in all views and just each helper was included in the matching controller, eg. UserHelper
would only be included in UserController
.
To return to this behavior you can set config.action_controller.include_all_helpers = false
in your config/application.rb
file.
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