Module: Positionable::PositionableMethods::InstanceMethods
- Defined in:
- lib/positionable.rb
Instance Method Summary collapse
-
#all_next ⇒ Object
All the next records, whose positions are greater than this record.
-
#all_next_was ⇒ Object
All the next records of the old scope, whose positions are greater than this record before it was moved from its old record.
-
#all_previous ⇒ Object
All the next records, whose positions are smaller than this record.
-
#down! ⇒ Object
Swaps this record position with his next sibling, unless this record is the last one.
-
#first? ⇒ Boolean
Tells whether this record is the first one (of his scope, if any).
-
#last? ⇒ Boolean
Tells whether this record is the last one (of his scope, if any).
-
#move_to(new_position) ⇒ Object
Moves this record at the given position, and updates positions of the impacted sibling records accordingly.
-
#next ⇒ Object
The next sibling record, whose position is right after this record.
-
#previous ⇒ Object
Gives the next sibling record, whose position is right before this record.
-
#up! ⇒ Object
Swaps this record position with his previous sibling, unless this record is the first one.
Instance Method Details
#all_next ⇒ Object
All the next records, whose positions are greater than this record. Records are ordered by their respective positions, depending on the order
option provided to is_positionable
.
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# File 'lib/positionable.rb', line 214 def all_next self.class.where("#{scoped_position} > ?", position) end |
#all_next_was ⇒ Object
All the next records of the old scope, whose positions are greater than this record before it was moved from its old record.
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# File 'lib/positionable.rb', line 220 def all_next_was self.class.where("#{scoped_position_was} > ?", position_was) end |
#all_previous ⇒ Object
All the next records, whose positions are smaller than this record. Records are ordered by their respective positions, depending on the order
option provided to is_positionable
(ascending by default).
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# File 'lib/positionable.rb', line 232 def all_previous self.class.where("#{scoped_position} < ?", position) end |
#down! ⇒ Object
Swaps this record position with his next sibling, unless this record is the last one.
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# File 'lib/positionable.rb', line 193 def down! swap_with(self.next) unless last? end |
#first? ⇒ Boolean
Tells whether this record is the first one (of his scope, if any).
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# File 'lib/positionable.rb', line 178 def first? position == start end |
#last? ⇒ Boolean
Tells whether this record is the last one (of his scope, if any).
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# File 'lib/positionable.rb', line 183 def last? position == bottom end |
#move_to(new_position) ⇒ Object
Moves this record at the given position, and updates positions of the impacted sibling records accordingly. If the new position is out of range, then the record is not moved.
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# File 'lib/positionable.rb', line 199 def move_to(new_position) if range.include? new_position reorder(position, new_position) update_column(:position, new_position) end end |
#next ⇒ Object
The next sibling record, whose position is right after this record.
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# File 'lib/positionable.rb', line 207 def next at(position + 1) end |
#previous ⇒ Object
Gives the next sibling record, whose position is right before this record.
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# File 'lib/positionable.rb', line 225 def previous at(position - 1) end |
#up! ⇒ Object
Swaps this record position with his previous sibling, unless this record is the first one.
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# File 'lib/positionable.rb', line 188 def up! swap_with(previous) unless first? end |