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Diffstat (limited to 'guides/source/active_record_querying.textile')
| -rw-r--r-- | guides/source/active_record_querying.textile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/guides/source/active_record_querying.textile b/guides/source/active_record_querying.textile index 14d0ba9b28..c5755c8308 100644 --- a/guides/source/active_record_querying.textile +++ b/guides/source/active_record_querying.textile @@ -695,7 +695,7 @@ Optimistic locking allows multiple users to access the same record for edits, an <strong>Optimistic locking column</strong> -In order to use optimistic locking, the table needs to have a column called +lock_version+. Each time the record is updated, Active Record increments the +lock_version+ column. If an update request is made with a lower value in the +lock_version+ field than is currently in the +lock_version+ column in the database, the update request will fail with an +ActiveRecord::StaleObjectError+. Example: +In order to use optimistic locking, the table needs to have a column called +lock_version+ of type integer. Each time the record is updated, Active Record increments the +lock_version+ column. If an update request is made with a lower value in the +lock_version+ field than is currently in the +lock_version+ column in the database, the update request will fail with an +ActiveRecord::StaleObjectError+. Example: <ruby> c1 = Client.find(1) |