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 145 def locking_column reset_locking_column unless defined?(@locking_column) @locking_column end
locking_column=(value)
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# File lib/active_record/locking/optimistic.rb, line 134 def locking_column=(value) @original_locking_column = @locking_column if defined?(@locking_column) @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 130 def locking_enabled? lock_optimistically && columns_hash[locking_column] end
quoted_locking_column()
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Quote the column name used for optimistic locking.
# File lib/active_record/locking/optimistic.rb, line 155 def quoted_locking_column connection.quote_column_name(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 160 def reset_locking_column self.locking_column = DEFAULT_LOCKING_COLUMN end
set_locking_column(value = nil, &block)
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Set the column to use for optimistic locking. Defaults to
lock_version
.
# File lib/active_record/locking/optimistic.rb, line 140 def set_locking_column(value = nil, &block) deprecated_property_setter :locking_column, value, block 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 166 def update_counters(id, counters) counters = counters.merge(locking_column => 1) if locking_enabled? super end