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require 'user'
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class Usergroup < ActiveRecord::Base
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include Authorization
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has_many_polymorphs :members, :from => [:usergroups, :users ], :as => :member,
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:through => :usergroup_member, :foreign_key => :usergroup_id, :dependent => :destroy
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has_many :hosts, :as => :owner
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validates_uniqueness_of :name
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before_destroy EnsureNotUsedBy.new(:hosts, :usergroups)
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# The text item to see in a select dropdown menu
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alias_attribute :select_title, :to_s
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default_scope :order => 'LOWER(usergroups.name)'
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validate :ensure_uniq_name
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# This methods retrieves all user addresses in a usergroup
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# Returns: Array of strings representing the user's email addresses
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def recipients
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all_users.map(&:mail).flatten.sort.uniq
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end
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# This methods retrieves all users in a usergroup
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# Returns: Array of users
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def all_users(group_list=[self], user_list=[])
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retrieve_users_and_groups group_list, user_list
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user_list.sort.uniq
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end
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# This methods retrieves all usergroups in a usergroup
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# Returns: Array of unique usergroups
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def all_usergroups(group_list=[self], user_list=[])
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retrieve_users_and_groups group_list, user_list
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group_list.sort.uniq
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end
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def as_json(options={})
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super({:only => [:name, :id]})
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end
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protected
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# Recurses down the tree of usergroups and finds the users
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# [+group_list+]: Array of Usergroups that have already been processed
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# [+users+] : Array of users accumulated at this point
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# Returns : Array of non unique users
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def retrieve_users_and_groups(group_list, user_list)
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for group in usergroups
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next if group_list.include? group
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group_list << group
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group.retrieve_users_and_groups(group_list, user_list)
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end
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user_list.concat users
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end
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def ensure_uniq_name
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errors.add :name, "is already used by a user account" if User.where(:login => name).first
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end
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end
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