1 files changed, 82 insertions, 0 deletions
diff --git a/app/helpers/navigation_helper.rb b/app/helpers/navigation_helper.rb
new file mode 100644
index 0000000..19cb934
--- /dev/null
+++ b/app/helpers/navigation_helper.rb
@@ -0,0 +1,82 @@
+module NavigationHelper
+
+  #
+  # used to create a side navigation link.
+  #
+  # Signature is the same as link_to, except it accepts an :active value in the html_options
+  #
+  def link_to_navigation(*args)
+    if args.last.is_a? Hash
+      html_options = args.pop.dup
+      active_class = html_options.delete(:active) ? 'active' : nil
+      html_options[:class] = [html_options[:class], active_class].join(' ')
+      args << html_options
+    else
+      active_class = nil
+    end
+    content_tag :li, :class => active_class do
+      link_to(*args)
+    end
+  end
+
+  #
+  # returns true if params[:action] matches one of the args.
+  #
+  def action?(*actions)
+    actions.detect do |action|
+      if action.is_a? String
+        action == action_string
+      elsif action.is_a? Symbol
+        if action == :none
+          action_string == nil
+        else
+          action == action_symbol
+        end
+      end
+    end
+  end
+
+  #
+  # returns true if params[:controller] matches one of the args.
+  #
+  # for example:
+  #   controller?(:me, :home)
+  #   controller?('groups/')  <-- matches any controller in namespace 'groups'
+  #
+  def controller?(*controllers)
+    controllers.each do |cntr|
+      if cntr.is_a? String
+        if cntr.ends_with?('/')
+          return true if controller_string.starts_with?(cntr.chop)
+        end
+        return true if cntr == controller_string
+      elsif cntr.is_a? Symbol
+        return true if cntr == controller_symbol
+      end
+    end
+    return false
+  end
+
+  private
+
+  def controller_string
+    @controller_string ||= params[:controller].to_s.gsub(/^\//, '')
+  end
+
+  def controller_symbol
+    @controller_symbol ||= params[:controller].gsub(/^\//,'').gsub('/','_').to_sym
+  end
+
+  def action_string
+    params[:action]
+  end
+
+  def action_symbol
+    @action_symbol ||= if params[:action].present?
+      params[:action].to_sym
+    else
+      nil
+    end
+  end
+
+end