helper

remove the logic from view to helper

ex:

module   TestHelper

              def  run

                       "test_title"

              end

end

in the test controller

<%=  run  %>

originally the function in the helper file can only be accessed by related view,

but there is method for sharing helper

sharing helper:

method 1:

define the method in application_helper.rb

method  2:

ex:

add  TestHelper  to controller

helper  :test