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| author | bogdanvlviv <bogdanvlviv@gmail.com> | 2016-11-10 20:42:23 +0200 |
|---|---|---|
| committer | bogdanvlviv <bogdanvlviv@gmail.com> | 2016-11-10 20:42:23 +0200 |
| commit | 25eed41c4950a6d1596130857841ae773b52f4d0 (patch) | |
| tree | 3b7ca8c757ba98ef24f228e946b26ef8638ee8fd /guides | |
| parent | cd9d6bed1bc6aeee6566eed5a5162baaeba769e6 (diff) | |
| download | rails-25eed41c4950a6d1596130857841ae773b52f4d0.tar.gz rails-25eed41c4950a6d1596130857841ae773b52f4d0.tar.bz2 rails-25eed41c4950a6d1596130857841ae773b52f4d0.zip | |
Update guides/source/active_record_querying.md
Add info about updating locking column value
Follow #26050 and #26871
[ci skip]
Diffstat (limited to 'guides')
| -rw-r--r-- | guides/source/active_record_querying.md | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/guides/source/active_record_querying.md b/guides/source/active_record_querying.md index 38b1ffc4c8..31220f9be2 100644 --- a/guides/source/active_record_querying.md +++ b/guides/source/active_record_querying.md @@ -953,6 +953,9 @@ class Client < ApplicationRecord end ``` +NOTE: Please note that the optimistic locking will be ignored if you update the +locking column's value. + ### Pessimistic Locking Pessimistic locking uses a locking mechanism provided by the underlying database. Using `lock` when building a relation obtains an exclusive lock on the selected rows. Relations using `lock` are usually wrapped inside a transaction for preventing deadlock conditions. |