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module RoutableActions
extend ActiveSupport::Concern
def find_routable!(routable_klass, requested_full_path, extra_authorization_proc: nil)
routable = routable_klass.find_by_full_path(requested_full_path, follow_redirects: request.get?)
if routable_authorized?(routable, extra_authorization_proc)
ensure_canonical_path(routable, requested_full_path)
routable
else
route_not_found
nil
end
end
def routable_authorized?(routable, extra_authorization_proc)
action = :"read_#{routable.class.to_s.underscore}"
return false unless can?(current_user, action, routable)
if extra_authorization_proc
extra_authorization_proc.call(routable)
else
true
end
end
def ensure_canonical_path(routable, requested_full_path)
return unless request.get?
canonical_path = routable.full_path
if canonical_path != requested_full_path
if canonical_path.casecmp(requested_full_path) != 0
flash[:notice] = "#{routable.class.to_s.titleize} '#{requested_full_path}' was moved to '#{canonical_path}'. Please update any links and bookmarks that may still have the old path."
end
redirect_to build_canonical_path(routable)
end
end
end
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