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541a51ecf8
It is a common pattern in the Rails community that when people want to
:xa
use any kind of helper that is defined inside app/helpers they includes
the helper module inside the controller like:
module UserHelper
def my_user_helper
# ...
end
end
class UsersController < ApplicationController
include UserHelper
def index
render inline: my_user_helper
end
end
This has problem because the helper can't access anything that is
defined in the view level context class.
Also all public methods of the helper become available in the controller
what can lead to undesirable methods being routed and behaving as
actions.
Also if you helper depends on other helpers or even Action View helpers
you need to include each one of these dependencies in your controller
otherwise your helper is not going to work.
We already have a helpers proxy at controller class level but that proxy
doesn't have access to the instance variables defined in the
controller.
With this new instance level helper proxy users can reuse helpers in the
controller without having to include the modules and with access to
instance variables defined in the controller.
class UsersController < ApplicationController
def index
render inline: helpers.my_user_helper
end
end
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|---|---|---|
| .. | ||
| abstract_controller | ||
| action_controller | ||
| action_dispatch | ||
| action_pack | ||
| abstract_controller.rb | ||
| action_controller.rb | ||
| action_dispatch.rb | ||
| action_pack.rb | ||