diff options
Diffstat (limited to 'app/models/concerns/relative_positioning.rb')
| -rw-r--r-- | app/models/concerns/relative_positioning.rb | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/app/models/concerns/relative_positioning.rb b/app/models/concerns/relative_positioning.rb index c32e499c329..9069d3088cd 100644 --- a/app/models/concerns/relative_positioning.rb +++ b/app/models/concerns/relative_positioning.rb @@ -168,6 +168,24 @@ module RelativePositioning self.relative_position = MIN_POSITION end + def next_object_by_relative_position(ignoring: nil, order: :asc) + relation = relative_positioning_scoped_items(ignoring: ignoring).reorder(relative_position: order) + + relation = if order == :asc + relation.where(self.class.arel_table[:relative_position].gt(relative_position)) + else + relation.where(self.class.arel_table[:relative_position].lt(relative_position)) + end + + relation.first + end + + def relative_positioning_scoped_items(ignoring: nil) + relation = self.class.relative_positioning_query_base(self) + relation = exclude_self(relation, excluded: ignoring) if ignoring.present? + relation + end + # This method is used during rebalancing - override it to customise the update # logic: def update_relative_siblings(relation, range, delta) |