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author | Vijay Dev <vijaydev.cse@gmail.com> | 2011-10-14 22:21:40 +0530 |
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committer | Vijay Dev <vijaydev.cse@gmail.com> | 2011-10-14 22:21:40 +0530 |
commit | e759c8882a990606bb4aee8a643431ebe544c69f (patch) | |
tree | dea32e65055a6e67d89f106cf696ae7ef358619a /railties/guides/source/association_basics.textile | |
parent | 521a089166a17d447c3b3b32ff7f9394774ca895 (diff) | |
parent | e2a3952428050ea8a22c6a7de27f30ee0b9b1d4d (diff) | |
download | rails-e759c8882a990606bb4aee8a643431ebe544c69f.tar.gz rails-e759c8882a990606bb4aee8a643431ebe544c69f.tar.bz2 rails-e759c8882a990606bb4aee8a643431ebe544c69f.zip |
Merge branch 'master' of github.com:lifo/docrails
Diffstat (limited to 'railties/guides/source/association_basics.textile')
-rw-r--r-- | railties/guides/source/association_basics.textile | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/railties/guides/source/association_basics.textile b/railties/guides/source/association_basics.textile index 479a3c1e30..6829eb8ef4 100644 --- a/railties/guides/source/association_basics.textile +++ b/railties/guides/source/association_basics.textile @@ -1229,17 +1229,15 @@ end If you use a hash-style +:conditions+ option, then record creation via this association will be automatically scoped using the hash. In this case, using +@customer.confirmed_orders.create+ or +@customer.confirmed_orders.build+ will create orders where the confirmed column has the value +true+. -If you need to evaluate conditions dynamically at runtime, you could use string interpolation in single quotes: +If you need to evaluate conditions dynamically at runtime, use a proc: <ruby> class Customer < ActiveRecord::Base has_many :latest_orders, :class_name => "Order", - :conditions => 'orders.created_at > #{10.hours.ago.to_s(:db).inspect}' + :conditions => proc { "orders.created_at > #{10.hours.ago.to_s(:db).inspect}" } end </ruby> -Be sure to use single quotes. - h6(#has_many-counter_sql). +:counter_sql+ Normally Rails automatically generates the proper SQL to count the association members. With the +:counter_sql+ option, you can specify a complete SQL statement to count them yourself. |