custom_link_to.rb

def link_to_project(name, project, options = {}, html_options = {})
    defaults = {
      :action     => 'show',
      :method     => :get
    }
    options = defaults.merge! options
    case options[:action]
    when 'show'
      url = @company ? [@company, project] : project
    when 'edit'
      url = @company ? edit_company_project_path(@company, project) : edit_project_path(project)
    when 'new'
      url = @company ? new_company_project_path(@company) : new_project_path
    when 'destroy'
      url = @company ? [@company, project] : project
    end
    return link_to name, url, options, html_options
end