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Diffstat (limited to 'railties/doc/guides/creating_plugins/view_helper.txt')
-rw-r--r-- | railties/doc/guides/creating_plugins/view_helper.txt | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/railties/doc/guides/creating_plugins/view_helper.txt b/railties/doc/guides/creating_plugins/view_helper.txt deleted file mode 100644 index b03a190e1a..0000000000 --- a/railties/doc/guides/creating_plugins/view_helper.txt +++ /dev/null @@ -1,61 +0,0 @@ -== Create a `squawk_info_for` view helper == - -Creating a view helper is a 3-step process: - - * Add an appropriately named file to the 'lib' directory. - * Require the file and hooks in 'init.rb'. - * Write the tests. - -First, create the test to define the functionality you want: - -[source, ruby] ---------------------------------------------------------------- -# File: vendor/plugins/yaffle/test/view_helpers_test.rb - -require File.dirname(__FILE__) + '/test_helper.rb' -include YaffleViewHelper - -class ViewHelpersTest < Test::Unit::TestCase - def test_squawk_info_for_should_return_the_text_and_date - time = Time.now - hickwall = Hickwall.new - hickwall.last_squawk = "Hello World" - hickwall.last_squawked_at = time - assert_equal "Hello World, #{time.to_s}", squawk_info_for(hickwall) - end -end ---------------------------------------------------------------- - -Then add the following statements to init.rb: - -[source, ruby] ---------------------------------------------------------------- -# File: vendor/plugins/yaffle/init.rb - -require "view_helpers" -ActionView::Base.send :include, YaffleViewHelper ---------------------------------------------------------------- - -Then add the view helpers file and - -[source, ruby] ---------------------------------------------------------------- -# File: vendor/plugins/yaffle/lib/view_helpers.rb - -module YaffleViewHelper - def squawk_info_for(yaffle) - returning "" do |result| - result << yaffle.read_attribute(yaffle.class.yaffle_text_field) - result << ", " - result << yaffle.read_attribute(yaffle.class.yaffle_date_field).to_s - end - end -end ---------------------------------------------------------------- - -You can also test this in script/console by using the `helper` method: - ---------------------------------------------------------------- -$ ./script/console ->> helper.squawk_info_for(@some_yaffle_instance) ---------------------------------------------------------------- |