From a9dafbb28de3e34c31ebf184fbc4e2042c7ff207 Mon Sep 17 00:00:00 2001
From: Andrew White <andyw@pixeltrix.co.uk>
Date: Tue, 29 Mar 2011 15:08:40 +0100
Subject: Delegate first!, last!, any? and many? to scoped

---
 .../guides/source/active_record_querying.textile     | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'railties/guides/source/active_record_querying.textile')

diff --git a/railties/guides/source/active_record_querying.textile b/railties/guides/source/active_record_querying.textile
index 2c5d9e67e3..f3a10b8b92 100644
--- a/railties/guides/source/active_record_querying.textile
+++ b/railties/guides/source/active_record_querying.textile
@@ -962,6 +962,26 @@ Client.exists?
 
 The above returns +false+ if the +clients+ table is empty and +true+ otherwise.
 
+You can also use +any?+ and +many?+ to check for existence on a model or relation.
+
+<ruby>
+# via a model
+Post.any?
+Post.many?
+
+# via a named scope
+Post.recent.any?
+Post.recent.many?
+
+# via a relation
+Post.where(:published => true).any?
+Post.where(:published => true).many?
+
+# via an association
+Post.first.categories.any?
+Post.first.categories.many?
+</ruby>
+
 h3. Calculations
 
 This section uses count as an example method in this preamble, but the options described apply to all sub-sections.
-- 
cgit v1.2.3

