1 files changed, 40 insertions, 0 deletions
diff --git a/app/models/gui_function.rb b/app/models/gui_function.rb
new file mode 100644
index 0000000..e27a8d2
--- /dev/null
+++ b/app/models/gui_function.rb
@@ -0,0 +1,40 @@
+class GuiFunction < ActiveRecord::Base
+  attr_accessible :category, :name, :description, :gui_function_memberships_attributes
+
+  has_many :gui_function_memberships, :dependent => :destroy
+  has_many :user_groups, :through => :gui_function_memberships
+
+  accepts_nested_attributes_for :gui_function_memberships
+
+  validates :name, :presence => true, 
+                   :format => { :with => /\A[a-z_0-9]+\z/, :message => "Only lower case letters allowed" },
+                   :length => { :in => 3..255 },
+                   :uniqueness => true
+
+  def to_s
+    self.name
+  end
+
+  def self.display?(function_name = nil, user)
+    if function_name.blank? || GemeinschaftSetup.count == 0
+      true
+    else
+      if !user || user.class != User || function_name.class != String
+        false
+      else
+        function_name = function_name.downcase
+
+        activated_gui_function_names = GuiFunctionMembership.where(:user_group_id => user.user_group_ids, :activated => true).map{|gui_function_membership| gui_function_membership.gui_function.name}.uniq
+        deactivated_gui_function_names = GuiFunctionMembership.where(:user_group_id => user.user_group_ids, :activated => false).map{|gui_function_membership| gui_function_membership.gui_function.name}.uniq
+
+        deactivated_gui_function_names = deactivated_gui_function_names - activated_gui_function_names
+
+        if deactivated_gui_function_names.include?(function_name)
+          false
+        else
+          true
+        end
+      end
+    end
+  end
+end