create custom html helpers in ruby on rails

I've starting programming on ASP.NET MVC Framework a year ago. Recently. I've learning Ruby On Rails Framework There is "custom html helper" featur开发者_Python百科e in ASP.NET MVC So I can create my own html helper

<%= Html.MyOwnHtmlHelper() %>

I've learned that there is html helpers in Ruby such as

<% text_area %>

which render at html

I have a question. Can I create my own html helper for rendering my own html?

To create a new helper:

1. choose a name for the helper file, for instance tags_helper.rb
2. create the file in the /app/helpers directory

3. create a module according to the file name. In this case

   module TagsHelper
   end
   

4. define your helper as method

   module TagsHelper
     def hello_world(name)
       "hello #{name}"
     end
   end
   

Now you can use the hello_world helper method in your view.