Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Now works with :dependent => :destroy and includes unit tests for that
case.  Also includes better error messages when updating/deleting stale
objects.

[#1966 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

[#1966 state:open]

This reverts commit 0d922885.

Conflicts:

	activerecord/lib/active_record/locking/optimistic.rb

instance method.

Break up DependencyModule's dual function of providing a "depend_on" DSL and "included" block DSL into separate modules. But, unify both approaches under AS::Concern.

Refactor to use arel_table method, and also use the same method name for instance and class methods.

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

Fixed that pessimistic locking you reference the quoted table name (Josh Susser) [#67 state:resolved]

Partial updates include only unsaved attributes. Off by default; set YourClass.partial_updates = true to enable.


git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@9157 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8395 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8156 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Optimistic locking: revert the lock version when an update fails. Closes #7840. Also return the number of affected rows instead of true.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6843 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6682 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6396 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Made increment_counter/decrement_counter play nicely with optimistic locking, and added a more general update_counters method


git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6139 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6051 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Backed out of new_record? to new? transformation as it would screw up existing models that did boolean calls on "new" attributes [DHH]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5018 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Deprecated ActiveRecord::Base.new_record? in favor of ActiveRecord::Base.new? (old version still works until Rails 2.0) [DHH]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5017 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5007 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4958 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

 Use the #lock method to obtain a row lock on a single record. Simply reloads the record with :lock => true.


git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4462 5ecf4fe2-1ee6-0310-87b1-e25e094e27de