module ActiveRecord::Locking::Optimistic::ClassMethods
Constants
- DEFAULT_LOCKING_COLUMN
Public Instance Methods
locking_column()
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The version column used for optimistic locking. Defaults to lock_version
.
# File lib/active_record/locking/optimistic.rb, line 161 def locking_column @locking_column = DEFAULT_LOCKING_COLUMN unless defined?(@locking_column) @locking_column end
locking_column=(value)
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Set the column to use for optimistic locking. Defaults to lock_version
.
# File lib/active_record/locking/optimistic.rb, line 155 def locking_column=(value) reload_schema_from_cache @locking_column = value.to_s end
locking_enabled?()
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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 150 def locking_enabled? lock_optimistically && columns_hash[locking_column] end
reset_locking_column()
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Reset the column used for optimistic locking back to the lock_version
default.
# File lib/active_record/locking/optimistic.rb, line 167 def reset_locking_column self.locking_column = DEFAULT_LOCKING_COLUMN end
update_counters(id, counters)
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Make sure the lock version column gets updated when counters are updated.
Calls superclass method
# File lib/active_record/locking/optimistic.rb, line 173 def update_counters(id, counters) counters = counters.merge(locking_column => 1) if locking_enabled? super end