I have ben struggling the past two days getting a this tiny piece of
functionality to work without any success :(
Trying to add a simple helper method to my views in order to ensure
links are only displayed if the user has the proper rights to access
that functionality.
def show_link(object, label = nil)
label ||= auth_labels[:show]
if can?(:read, object)
link_to(label, object)
end
end
But using link_to from within this context, somehow I don't have
access to the controller variable used internally, fx in url_for.
def url_for(options = {})
...
when :back
escape = false
controller.request.env["HTTP_REFERER"] ||
'javascript:history.back()'
else
...
end
If I output self in the show_link method, I can see that my current
context of self is ProjectsController, so I guess it makes sense that
I don't have a method controller inside a controller?
I access my helper method from here:
# index.html.erb
<%= show_link project %>
And the setup
if defined? ActionController
ActionController::Base.class_eval do
AuthAssistant::ViewHelpers::AuthLink
end
end
# module AuthAssistant::ViewHelpers::AuthLink
def self.included(base)
base.helper_method :create_link, :delete_link, :edit_link, :show_link
base.helper_method :new_link, :destroy_link, :update_link, :read_link
end
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