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Add doc section about use outside of controllers.

See gh-98 for a discussion on this.
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1 parent 368141d commit dc183fd26f30308834a622cda5c1f848497ec50b @bemurphy bemurphy committed Feb 15, 2013
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  1. +10 −0 README.rdoc
@@ -59,6 +59,16 @@ By default parameter keys that are not explicitly permitted will be logged in th
Additionally, this behaviour can be changed by changing the +config.action_controller.action_on_unpermitted_parameters+ property in your environment files. If set to +:log+ the unpermitted attributes will be logged, if set to +:raise+ an exception will be raised.
+== Use Outside of Controllers
+While Strong Parameters will enforce permitted and required values in your application controllers, keep in mind
+that you will need to sanitize untrusted data used for mass assignment when in use outside of controllers.
+For example, if you retrieve JSON data from a third party API call and pass the unchecked parsed result on to
++Model.create+, undesired mass assignments could take place. You can alleviate this risk by slicing the hash data,
+or wrapping the data in a new instance of +ActionController::Parameters+ and declaring permissions the same as
+you would in a controller.
== Installation
In Gemfile:

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