CSS active link class method for rails views

README.md

Active link CSS class

Usage:

%li{:class => active_class(:c => 'controller_name',:a => ['action1','action2'],:id => @object.id) }
  = link_to some_path do
    %i.fa.fa-chevron-circle-right.fa-fw
    %span Link Name

application_helper.rb

module ApplicationHelper
  # Given the options, this method determines whether the css class 'active' can be applied to the caller in the sidenav.
  # options[:c] - controller
  # options[:a] - action
  # options[:id] - id of an object
  def active_class options
    active =
      (!options[:c] || (options[:c] == params[:controller])) &&
      (!options[:a] || (options[:a].include? params[:action])) &&
      (!options[:id] || (options[:id].to_s == params[:id]))
    active ? 'active' : false
  end
end