Module: MongoidAbility::Subject::ClassMethods

Defined in:
lib/mongoid_ability/subject.rb

Overview

=====================================================================

Instance Method Summary collapse

Instance Method Details

#accessible_by(ability, action = :read) ⇒ Object

TODO: obviously this could be cleaner



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# File 'lib/mongoid_ability/subject.rb', line 46

def accessible_by ability, action=:read
  cr = self.criteria

  return cr unless ability.user.present?

  supercls = self.ancestors_with_default_locks.last || self
  subject_classes = [supercls].concat(supercls.subclasses)

  subject_classes.each do |cls|

    roles_id_locks = ability.user.roles_relation.collect{ |role| role.locks_relation.for_subject_type(cls.to_s).id_locks.for_action(action) }.flatten
    user_id_locks = ability.user.locks_relation.for_subject_type(cls.to_s).id_locks.for_action(action)

    closed_roles_id_locks = roles_id_locks.to_a.select(&:closed?)
    open_roles_id_locks = roles_id_locks.to_a.select(&:open?)

    closed_user_id_locks = user_id_locks.to_a.select(&:closed?)
    open_user_id_locks = user_id_locks.to_a.select(&:open?)

    if ability.can?(action, cls)
      excluded_ids = []

      id_locks = closed_roles_id_locks.
        reject{ |cl| open_roles_id_locks.any?{ |ol| ol.subject_id == cl.subject_id } }.
        reject{ |cl| open_user_id_locks.any?{ |ol| ol.subject_id == cl.subject_id } }

      id_locks += closed_user_id_locks
      
      excluded_ids << id_locks.map(&:subject_id)

      cr = cr.or(_type: cls.to_s, :_id.nin => excluded_ids.flatten)
    else
      included_ids = []

      id_locks = open_roles_id_locks
      id_locks += open_user_id_locks

      included_ids << id_locks.map(&:subject_id)

      cr = cr.or(_type: cls.to_s, :_id.in => included_ids.flatten)
    end
  end

  cr
end

#ancestors_with_default_locks ⇒ Object 



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# File 'lib/mongoid_ability/subject.rb', line 39

def ancestors_with_default_locks
  self_and_ancestors_with_default_locks - [self]
end

#default_lock(action, outcome) ⇒ Object 



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# File 'lib/mongoid_ability/subject.rb', line 21

def default_lock action, outcome
  default_locks << lock_class_name.constantize.new(subject_type: self, action: action, outcome: outcome)
end

#default_locks ⇒ Object 



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# File 'lib/mongoid_ability/subject.rb', line 13

def default_locks
  @default_locks ||= []
end

#default_locks=(val) ⇒ Object 



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# File 'lib/mongoid_ability/subject.rb', line 17

def default_locks= val
  @default_locks = val
end

#lock_class_name ⇒ Object

override if needed return for example 'MyLock'



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# File 'lib/mongoid_ability/subject.rb', line 29

def lock_class_name
  Object.subclasses.detect{ |cls| cls < MongoidAbility::Lock }.name
end

#self_and_ancestors_with_default_locks ⇒ Object 



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# File 'lib/mongoid_ability/subject.rb', line 35

def self_and_ancestors_with_default_locks
  self.ancestors.select{ |a| a.is_a?(Class) && a.respond_to?(:default_locks) }
end