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sync example and documentation for strong_parameters hash whitelisting.

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This is a follow up to #12609 and integrates #12158.

Thanks @aspiers.
Closes #12158.
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Yves Senn 2013-11-26 14:50:44 +01:00
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10
guides/source/action_controller_overview.md
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@ -321,10 +321,12 @@ in mind. It is not meant as a silver bullet to handle all your
whitelisting problems. However you can easily mix the API with your
own code to adapt to your situation.
Imagine a scenario where you want to whitelist an attribute
containing a hash with any keys. Using strong parameters you can't
allow a hash with any keys but you can use a simple assignment to get
the job done:
Imagine a scenario where you have parameters representing a product
name and a hash of arbitrary data associated with that product, and
you want to whitelist the product name attribute but also the whole
data hash. The strong parameters API doesn't let you directly
whitelist the whole of a nested hash with any keys, but you can use
the keys of your nested hash to declare what to whitelist:
```ruby
def product_params