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== Helpers ==
This section describes how to add a helper named 'WoodpeckersHelper' to your plugin that will behave the same as a helper in your main app. This is very similar to adding a model and a controller.
You can test your plugin's helper as you would test any other helper:
*vendor/plugins/yaffle/test/woodpeckers_helper_test.rb*
[source, ruby]
---------------------------------------------------------------
require File.dirname(__FILE__) + '/test_helper.rb'
include WoodpeckersHelper
class WoodpeckersHelperTest < Test::Unit::TestCase
def test_tweet
assert_equal "Tweet! Hello", tweet("Hello")
end
end
---------------------------------------------------------------
This is just a simple test to make sure the helper is being loaded correctly. After watching it fail with `rake`, you can make it pass like so:
*vendor/plugins/yaffle/lib/yaffle.rb:*
[source, ruby]
----------------------------------------------
%w{ models controllers helpers }.each do |dir|
path = File.join(File.dirname(__FILE__), 'app', dir)
$LOAD_PATH << path
ActiveSupport::Dependencies.load_paths << path
ActiveSupport::Dependencies.load_once_paths.delete(path)
end
----------------------------------------------
*vendor/plugins/yaffle/lib/app/helpers/woodpeckers_helper.rb:*
[source, ruby]
----------------------------------------------
module WoodpeckersHelper
def tweet(text)
"Tweet! #{text}"
end
end
----------------------------------------------
Now your test should be passing, and you should be able to use the Woodpeckers helper in your app.
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