module ActiveRecord::Locking::Optimistic::ClassMethods
Constants
- DEFAULT_LOCKING_COLUMN
Attributes
The version column used for optimistic locking. Defaults to lock_version
.
Public Instance Methods
Source
# File lib/active_record/locking/optimistic.rb, line 165 def locking_column=(value) reload_schema_from_cache @locking_column = value.to_s end
Set the column to use for optimistic locking. Defaults to lock_version
.
Source
# File lib/active_record/locking/optimistic.rb, line 160 def locking_enabled? lock_optimistically && columns_hash[locking_column] 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
).
Source
# File lib/active_record/locking/optimistic.rb, line 174 def reset_locking_column self.locking_column = DEFAULT_LOCKING_COLUMN end
Reset the column used for optimistic locking back to the lock_version
default.
Source
# File lib/active_record/locking/optimistic.rb, line 180 def update_counters(id, counters) counters = counters.merge(locking_column => 1) if locking_enabled? super end
Make sure the lock version column gets updated when counters are updated.
Calls superclass method
Private Instance Methods
Source
# File lib/active_record/locking/optimistic.rb, line 186 def hook_attribute_type(name, cast_type) if lock_optimistically && name == locking_column cast_type = LockingType.new(cast_type) end super end
Calls superclass method
Source
# File lib/active_record/locking/optimistic.rb, line 194 def inherited(base) super base.class_eval do @locking_column = DEFAULT_LOCKING_COLUMN end end
Calls superclass method