Module: Groupify::ActiveRecord::Group::ClassMethods

Defined in:
lib/groupify/adapter/active_record.rb

Instance Method Summary collapse

Instance Method Details

#default_member_class ⇒ Object 



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# File 'lib/groupify/adapter/active_record.rb', line 88

def default_member_class
  @default_member_class ||= register(User)
end

#default_member_class=(klass) ⇒ Object 



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# File 'lib/groupify/adapter/active_record.rb', line 92

def default_member_class=(klass)
  @default_member_class = klass
end

#has_members(name) ⇒ Object

Define which classes are members of this group



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# File 'lib/groupify/adapter/active_record.rb', line 102

def has_members(name)
  klass = name.to_s.classify.constantize
  register(klass)

  # Define specific members accessor, i.e. group.users
  define_method name.to_s.pluralize.underscore do
    klass.joins(:group_memberships).where(:group_memberships => {:group_id => self.id}).uniq
  end
end

#member_classes ⇒ Object

Returns the member classes defined for this class, as well as for the super classes



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# File 'lib/groupify/adapter/active_record.rb', line 97

def member_classes
  (@member_klasses ||= Set.new).merge(superclass.method_defined?(:member_classes) ? superclass.member_classes : [])
end

#merge!(source_group, destination_group) ⇒ Object

Merge two groups. The members of the source become members of the destination, and the source is destroyed.



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# File 'lib/groupify/adapter/active_record.rb', line 113

def merge!(source_group, destination_group)
  # Ensure that all the members of the source can be members of the destination
  invalid_member_classes = (source_group.member_classes - destination_group.member_classes)
  invalid_member_classes.each do |klass|
    if klass.joins(:group_memberships).where(:group_memberships => {:group_id => source_group.id}).count > 0
      raise ArgumentError.new("#{source_group.class} has members that cannot belong to #{destination_group.class}")
    end
  end

  source_group.transaction do
    source_group.group_memberships.update_all(:group_id => destination_group.id)
    source_group.destroy
  end
end

#with_member(member) ⇒ Object 



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# File 'lib/groupify/adapter/active_record.rb', line 83

def with_member(member)
  #joins(:group_memberships).where(:group_memberships => {:member_id => member.id, :member_type => member.class.to_s})
  member.groups
end