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copied!<h2>Extracting helpers methods into classes (solution n°2)</h2> <p>ok to address this specific way to clean up helpers 1st I dug up this old railscast : </p> <p><a href="http://railscasts.com/episodes/101-refactoring-out-helper-object" rel="nofollow">http://railscasts.com/episodes/101-refactoring-out-helper-object</a></p> <p>At the time it inspired me to create a little tabbing system (working in one of my apps in conjunction with a state machine) :</p> <pre><code>module WorkflowHelper # takes the block def workflow_for(model, opts={}, &block) yield Workflow.new(model, opts[:match], self) return false end class Workflow def initialize(model, current_url, view) @view = view @current_url = current_url @model = model @links = [] end def link_to(text, url, opts = {}) @links << url url = @model.new_record? ? "" : @view.url_for(url) @view.raw "<li class='#{active_class(url)}'>#{@view.link_to(text, url)}</li>" end private def active_class(url) 'active' if @current_url.gsub(/(edit|new)/, "") == url.gsub(/(edit|new)/, "") || ( @model.new_record? && @links.size == 1 ) end end #class Workflow end </code></pre> <p>And my views go like this :</p> <pre><code> -workflow_for @order, :match => request.path do |w| = w.link_to "✎ Create/Edit an Order", [:edit, :admin, @order] = w.link_to "√ Decide for Approval/Price", [:approve, :admin, @order] = w.link_to "✉ Notify User of Approval/Price", [:email, :admin, @order] = w.link_to "€ Create/Edit Order's Invoice", [:edit, :admin, @order, :invoice] </code></pre> <p>As you see it's a nice way to encapsulate the logic in a class and have only one method in the helper/view space</p>

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