The version column used for optimistic locking. Defaults to lock_version.
# File lib/active_record/locking/optimistic.rb, line 149 149: def locking_column 150: reset_locking_column 151: end
Is optimistic locking enabled for this table? 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 138 138: def locking_enabled? 139: lock_optimistically && columns_hash[locking_column] 140: end
Quote the column name used for optimistic locking.
# File lib/active_record/locking/optimistic.rb, line 154 154: def quoted_locking_column 155: connection.quote_column_name(locking_column) 156: end
Reset the column used for optimistic locking back to the lock_version default.
# File lib/active_record/locking/optimistic.rb, line 159 159: def reset_locking_column 160: set_locking_column DEFAULT_LOCKING_COLUMN 161: end
Set the column to use for optimistic locking. Defaults to lock_version.
# File lib/active_record/locking/optimistic.rb, line 143 143: def set_locking_column(value = nil, &block) 144: define_attr_method :locking_column, value, &block 145: value 146: end
Make sure the lock version column gets updated when counters are updated.
# File lib/active_record/locking/optimistic.rb, line 165 165: def update_counters(id, counters) 166: counters = counters.merge(locking_column => 1) if locking_enabled? 167: super 168: end
Disabled; run with --debug to generate this.
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