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Documentation for :primary_key_format.

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commit c410dcf313704cef7d8c66f61b55a8b0db0b9dae 1 parent bbd4b55
Rolf Timmermans authored
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  1. +2 −0  README.rdoc
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2  README.rdoc
@@ -80,6 +80,8 @@ The has_ancestry methods supports the following options:
- Migrate: add_column [table], :ancestry_depth, :integer, :default => 0
- Build cache: TreeNode.rebuild_depth_cache!
:depth_cache_column Pass in a symbol to store depth cache in a different column
+ :primary_key_format Supply a regular expression that matches the format of your primary key.
+ By default, primary keys only match integers ([0-9]+).
= (Named) Scopes
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