The version column used for optimistic locking. Defaults to
lock_version
.
# File lib/active_record/locking/optimistic.rb, line 143 def locking_column reset_locking_column unless defined?(@locking_column) @locking_column end
# File lib/active_record/locking/optimistic.rb, line 132 def locking_column=(value) @original_locking_column = @locking_column if defined?(@locking_column) @locking_column = value.to_s end
Returns true if the lock_optimistically
flag is set to true
(which it is, by default) and the table includes the
locking_column
column (defaults to lock_version
).
# File lib/active_record/locking/optimistic.rb, line 128 def locking_enabled? lock_optimistically && columns_hash[locking_column] end
Quote the column name used for optimistic locking.
# File lib/active_record/locking/optimistic.rb, line 153 def quoted_locking_column connection.quote_column_name(locking_column) end
Reset the column used for optimistic locking back to the
lock_version
default.
# File lib/active_record/locking/optimistic.rb, line 158 def reset_locking_column self.locking_column = DEFAULT_LOCKING_COLUMN end
Set the column to use for optimistic locking. Defaults to
lock_version
.
# File lib/active_record/locking/optimistic.rb, line 138 def set_locking_column(value = nil, &block) deprecated_property_setter :locking_column, value, block end
Make sure the lock version column gets updated when counters are updated.
# File lib/active_record/locking/optimistic.rb, line 164 def update_counters(id, counters) counters = counters.merge(locking_column => 1) if locking_enabled? super end