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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
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