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document config.active_record.dependent_restrict_raises in the config…

…uring guide [ci skip]
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commit 4c5dc4ac0d26b9c5d97d27f7886ebc6327771895 1 parent b41ef0a
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  1. +2 −0  railties/guides/source/configuring.textile
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2  railties/guides/source/configuring.textile
@@ -273,6 +273,8 @@ h4. Configuring Active Record
* +config.active_record.auto_explain_threshold_in_seconds+ configures the threshold for automatic EXPLAINs (+nil+ disables this feature). Queries exceeding the threshold get their query plan logged. Default is 0.5 in development mode.
+* +config.active_record.dependent_restrict_raises+ will control the behavior when an object with a <tt>:dependent => :restrict</tt> association is deleted. Setting this to false will prevent +DeleteRestrictionError+ from being raised and instead will add an error on the model object. Defaults to false in the development mode.
+
The MySQL adapter adds one additional configuration option:
* +ActiveRecord::ConnectionAdapters::MysqlAdapter.emulate_booleans+ controls whether Active Record will consider all +tinyint(1)+ columns in a MySQL database to be booleans and is true by default.
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