Simple helper for Rails View to handle active class

application_helper.rb

module ApplicationHelper

  # Most commonly used.
  # If you have a ROUTE of :admin_home or admin_home_path,
  #
  #     <li <%= set_active_if_path(admin_home_path) %>>
  #       <%= link_to :admin_home do %>
  #          <i class="fa fa-home"></i> <span>Dashboard </span>
  #       <% end %>
  #     </li>
  # --------------------------------------
  def set_active_if_path(name)
    if current_page?(name)
      raw 'class="active"'
    end
  end

  # Use this if you are using a parent-child navigation,\
  # where you want to set the parent as active.
  # Usually, you can group the whole parent as a controller.
  # If you have a CONTROLLER of :company
  #
  #    <li class="treeview  <%= set_active_if_controller('company') %>">  <--------This is where the parennt is
  #      <a href="#">
  #        <i class="fa fa-building-o"></i>
  #        <span>Companies</span>
  #        <span class="pull-right-container">
  #            <i class="fa fa-angle-left pull-right"></i>
  #          </span>
  #      </a>
  #        <ul class="treeview-menu">
  #        <li <%= set_active_if_path(:show_company) %>>                  <--------This is her child
  #          <%= link_to :show_company do %>
  #              <i class="fa fa-eye"></i> <span>Show companies</span>
  #        <% end %>
  #        </li>
  # --------------------------------------
  def set_active_if_controller(name)
    if controller.controller_name == name
      raw 'menu-open active'
    end
  end
end