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| author | Jeremy Kemper <jeremy@bitsweat.net> | 2008-01-19 03:45:24 +0000 |
|---|---|---|
| committer | Jeremy Kemper <jeremy@bitsweat.net> | 2008-01-19 03:45:24 +0000 |
| commit | abdf546ad6d02ecb95766e73cd3c645a48c954de (patch) | |
| tree | e783b20e18305f1210bea2250130891e634d5aa3 /activerecord/lib/active_record/aggregations.rb | |
| parent | 3877dfc72b126f5009c7ea53c03d83a72425db10 (diff) | |
| download | rails-abdf546ad6d02ecb95766e73cd3c645a48c954de.tar.gz rails-abdf546ad6d02ecb95766e73cd3c645a48c954de.tar.bz2 rails-abdf546ad6d02ecb95766e73cd3c645a48c954de.zip | |
Support aggregations in finder conditions. Closes #10572.
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8671 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
Diffstat (limited to 'activerecord/lib/active_record/aggregations.rb')
| -rw-r--r-- | activerecord/lib/active_record/aggregations.rb | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/aggregations.rb b/activerecord/lib/active_record/aggregations.rb index f0f34e9a99..cad8304bcf 100644 --- a/activerecord/lib/active_record/aggregations.rb +++ b/activerecord/lib/active_record/aggregations.rb @@ -108,6 +108,15 @@ module ActiveRecord # # Read more about value objects on http://c2.com/cgi/wiki?ValueObject and on the dangers of not keeping value objects # immutable on http://c2.com/cgi/wiki?ValueObjectsShouldBeImmutable + # + # == Finding records by a value object + # + # Once a +composed_of+ relationship is specified for a model, records can be loaded from the database by specifying an instance + # of the value object in the conditions hash. The following example finds all customers with +balance_amount+ equal to 20 and + # +balance_currency+ equal to "USD": + # + # Customer.find(:all, :conditions => {:balance => Money.new(20, "USD")}) + # module ClassMethods # Adds reader and writer methods for manipulating a value object: # <tt>composed_of :address</tt> adds <tt>address</tt> and <tt>address=(new_address)</tt> methods. |