On May 23, 2009, at 7:40 PM, Damian Janowski wrote:
> How about a simple extension to Hash (somebody let me know if this
> exists already) that allows you to do:
>
> user.attributes = params[:user].pick(:first_name, :last_name)
This is what active support #slice and #slice! hash extensions do and
I have used this in my controllers already for mass attribute white
lists per controller action "when needed" for a few months now. I
think since 2.3.2 (perhaps earlier) the #slice method even do as
expected for indifferent access hashes.
>> {'a' => 'fff', 'b' => 'ccc'}.with_indifferent_access.slice(:a)
=> {"a"=>"fff"}
- Ken
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