45 lines
1.4 KiB
Ruby
45 lines
1.4 KiB
Ruby
# -*- encoding : utf-8 -*-
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class Relation < ActiveRecord::Base
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belongs_to :target, :polymorphic => true
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belongs_to :actor, :polymorphic => true
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ROLES = %w[reader writer admin]
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validates :role, :inclusion => {:in => ROLES}
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# validate { errors.add(:actor, :taken) if Relation.where(:actor_type => self.actor_type, :actor_id => self.actor_id).present? }
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before_validation :add_default_role
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scope :by_user_through_groups, lambda {|u| where("actor_type = 'User' AND actor_id = ? OR actor_type = 'Group' AND actor_id IN (?)", u.id, u.group_ids)}
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scope :by_actor, lambda {|obj| where(:actor_id => obj.id, :actor_type => obj.class.to_s)}
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scope :by_target, lambda {|tar| where(:target_id => tar.id, :target_type => tar.class.to_s)}
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scope :by_role, lambda {|role| where(:role => role)}
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def self.create_with_role(actor, target, role)
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r = self.new
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r.actor = actor
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r.target = target
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r.role = role
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r.save
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end
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def self.add_member(member, target, role)
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if target.relations.exists?(:actor_id => member.id, :actor_type => member.class.to_s) || @platform.try(:owner) == member
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true
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else
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rel = target.relations.build(:role => role)
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rel.actor = member
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rel.save
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end
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end
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def self.remove_member(member, target)
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Relation.by_actor(member).by_target(target).each{|r| r.destroy}
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end
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protected
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def add_default_role
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self.role = ROLES.first if role.nil? || role.empty?
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end
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end
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