Module: ActiveRecord::ActsAs::OrderableTable::InstanceMethods

Defined in:
lib/active_record/acts_as/orderable_table.rb

Instance Method Summary collapse

Instance Method Details

#acts_ordinal_field ⇒ Object 



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# File 'lib/active_record/acts_as/orderable_table.rb', line 41

def acts_ordinal_field
  self.class.ordinal_field
end

#acts_ordinal_value ⇒ Object 



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# File 'lib/active_record/acts_as/orderable_table.rb', line 45

def acts_ordinal_value
  self.send(acts_ordinal_field)
end

#insert_at(position, ordinals_scope = nil) ⇒ Object 



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# File 'lib/active_record/acts_as/orderable_table.rb', line 26

def insert_at(position, ordinals_scope = nil)
  return if position == acts_ordinal_value # if ordinal haven't changed

  # if new position is not occupied just take this ordinal
  unless self.class.where("#{acts_ordinal_field}": position).first
    update_attributes("#{acts_ordinal_field}": position)
    return
  end

  items = items_scoped(position, ordinals_scope)
  current_positions = items.map { |item| item.send(acts_ordinal_field) }
  reordered_positions = reorder_positions(position, current_positions)
  update_ordinals(items, reordered_positions)
end

#starts_from ⇒ Object 



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# File 'lib/active_record/acts_as/orderable_table.rb', line 49

def starts_from
  self.class.starts_from
end