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Improve active record associations guide a bit

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* Use right example for has_many :find method;
* Reword has_many :counter_sql doc notes.
This commit is contained in:
Carlos Antonio da Silva 2012-01-28 18:21:22 -02:00
parent 856f13ab05
commit 695ec8e279
1 changed files with 2 additions and 2 deletions
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4
railties/guides/source/association_basics.textile
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@ -1120,7 +1120,7 @@ h6(#has_many-collection-find). <tt><em>collection</em>.find(...)</tt>
The <tt><em>collection</em>.find</tt> method finds objects within the collection. It uses the same syntax and options as +ActiveRecord::Base.find+.
<ruby>
@open_orders = @customer.orders.where(:open => 1)
@open_orders = @customer.orders.find(1)
</ruby>
h6(#has_many-collection-where). <tt><em>collection</em>.where(...)</tt>
@ -1242,7 +1242,7 @@ 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.
NOTE: If you specify +:finder_sql+ but not +:counter_sql+, then the counter SQL will be generated by substituting +SELECT COUNT(*) FROM+ for the +SELECT ... FROM+ clause of your +:finder_sql+ statement.
NOTE: If you specify +:finder_sql+ but not +:counter_sql+, then the counter SQL will be generated by substituting the +SELECT ... FROM+ clause of your +:finder_sql+ statement by +SELECT COUNT(*) FROM+.
h6(#has_many-dependent). +:dependent+