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| author | Carlos Antonio da Silva <carlosantoniodasilva@gmail.com> | 2012-01-31 12:09:08 -0200 |
|---|---|---|
| committer | Carlos Antonio da Silva <carlosantoniodasilva@gmail.com> | 2012-01-31 12:09:09 -0200 |
| commit | 31fce0192ee83ee13e2b17fdeefa712227019e49 (patch) | |
| tree | cc2be72c07b0d52978952ec87d78deb5f075929c /activerecord/lib/active_record | |
| parent | 0d5f7dac3dbbd788763e3b6fffce40dfc7a3ba84 (diff) | |
| download | rails-31fce0192ee83ee13e2b17fdeefa712227019e49.tar.gz rails-31fce0192ee83ee13e2b17fdeefa712227019e49.tar.bz2 rails-31fce0192ee83ee13e2b17fdeefa712227019e49.zip | |
Improve readonly examples and optimistic locking docs
* Relation#order can receive order attributes as different arguments,
add example;
* Readonly does not handle deletion of records, only modification;
* locking_version column does not need to default to 0, Rails handles
nil values;
* Change references from "set_locking_column" to "self.locking_column".
Diffstat (limited to 'activerecord/lib/active_record')
| -rw-r--r-- | activerecord/lib/active_record/locking/optimistic.rb | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/activerecord/lib/active_record/locking/optimistic.rb b/activerecord/lib/active_record/locking/optimistic.rb index e643c0d437..4d73cdd37a 100644 --- a/activerecord/lib/active_record/locking/optimistic.rb +++ b/activerecord/lib/active_record/locking/optimistic.rb @@ -40,11 +40,13 @@ module ActiveRecord # This locking mechanism will function inside a single Ruby process. To make it work across all # web requests, the recommended approach is to add +lock_version+ as a hidden field to your form. # - # You must ensure that your database schema defaults the +lock_version+ column to 0. - # # This behavior can be turned off by setting <tt>ActiveRecord::Base.lock_optimistically = false</tt>. - # To override the name of the +lock_version+ column, invoke the <tt>set_locking_column</tt> method. - # This method uses the same syntax as <tt>set_table_name</tt> + # To override the name of the +lock_version+ column, set the <tt>locking_column</tt> class attribute: + # + # class Person < ActiveRecord::Base + # self.locking_column = :lock_person + # end + # module Optimistic extend ActiveSupport::Concern |