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-rw-r--r--config/initializers/active_record_locking.rb35
1 files changed, 13 insertions, 22 deletions
diff --git a/config/initializers/active_record_locking.rb b/config/initializers/active_record_locking.rb
index 21ff323927b..1bd1a12e4b7 100644
--- a/config/initializers/active_record_locking.rb
+++ b/config/initializers/active_record_locking.rb
@@ -1,7 +1,10 @@
# rubocop:disable Lint/RescueException
-# Remove this monkey-patch when all lock_version values are converted from NULLs to zeros.
-# See https://gitlab.com/gitlab-org/gitlab-ce/issues/25228
+# Remove this monkey patch when we move to Rails 5.1, because the bug has been fixed in https://github.com/rails/rails/pull/26050.
+if Rails.gem_version >= Gem::Version.new("5.1")
+ raise "Remove this monkey patch: #{__FILE__}"
+end
+
module ActiveRecord
module Locking
module Optimistic
@@ -16,12 +19,7 @@ module ActiveRecord
return 0 if attribute_names.empty?
lock_col = self.class.locking_column
-
previous_lock_value = send(lock_col).to_i
-
- # This line is added as a patch
- previous_lock_value = nil if previous_lock_value == '0' || previous_lock_value == 0
-
increment_lock
attribute_names += [lock_col]
@@ -32,7 +30,8 @@ module ActiveRecord
affected_rows = relation.where(
self.class.primary_key => id,
- lock_col => previous_lock_value
+ # Patched because when `lock_version` is read as `0`, it may actually be `NULL` in the DB.
+ lock_col => previous_lock_value == 0 ? [nil, 0] : previous_lock_value
).update_all(
attributes_for_update(attribute_names).map do |name|
[name, _read_attribute(name)]
@@ -64,21 +63,13 @@ module ActiveRecord
# This is patched because we want `lock_version` default to `NULL`
# rather than `0`
- if Gitlab.rails5?
- class LockingType
- def deserialize(value)
- super
- end
-
- def serialize(value)
- super
- end
+ class LockingType
+ def deserialize(value)
+ super
end
- else
- class LockingType < SimpleDelegator
- def type_cast_from_database(value)
- super
- end
+
+ def serialize(value)
+ super
end
end
end