Rails and Rake task - How to call a Rails method inside a custom class defined in a rake task file

Question

I have the following code in "Rails Root"/lib/tasks/example.rake:

task :example_task => :environment do
  e = Example.new
  e.example_method
end

class Example
  def example_method
    select_tag 'Example'
  end
end

When I call e.example_method in the rake task, I get the error "undefined method 'select_tag' for #<Example:0x39f58b0>".

How do I make the select_tag call work?

You just need to require the helpers you need. Please check this [question][1]. [1]: http://stackoverflow.com/questions/1450112/how-do-i-use-helpers-in-rake — Alexandre Abreu, Jan 14 '13 at 16:43
`select_tag` is one of the helpers methods in `ActionView` Why would your Rake Task calling any method that is view related? Just curious — Jasdeep Singh, Jan 14 '13 at 17:08

score 0 · Answer 1 · answered Jan 14 '13 at 17:35

0

You need to require the helper the method you're trying to use. In the case of select_tag, you'll need to require ActionView.

answered Jan 14 '13 at 17:35

Chris Cashwell

score 0 · Answer 2 · answered Jan 14 '13 at 18:17

0

You can either:

Access helper methods via the helper variable:

helper.content_tag :li, "Helola" 
=> "<li>Helola</li>"

or require the desired helpers

require "#{RAILS_ROOT}/app/helpers/some_helper.rb"
include SomeHelper

answered Jan 14 '13 at 18:17

ichigolas

2 Answers2