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Re: [PhillyOnRails] ActiveRecord: updating a single attribute
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- From: "Evan Weaver" <evan@cloudbur.st>
- To: talk@phillyonrails.org
- Subject: Re: [PhillyOnRails] ActiveRecord: updating a single attribute
- Date: Thu, 24 Jan 2008 11:48:00 -0500
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You can't enforce validations if you don't resave every attribute every time.
Evan
On Jan 24, 2008 12:33 PM, Chris Cera <chris@cera.us> wrote:
> Hi everyone,
>
> Is there a way to update just one attribute of a record without
> causing all the attributes to be re-set? When I use the
> update_attribute() or increment(), since they call save() it
> causes every attribute to get re-set. I verified this in the
> mysql 'General Query Log'. Example:
> item.update_attribute(:normal_views, item.normal_views + 1)
>
> I feel that there must be a more elegant solution than this:
> sql = 'UPDATE documents SET normal_views = normal_views + 1 WHERE id = ' + item.id.to_s
> ActiveRecord::Base.connection.update(sql)
>
> Any suggestions are greatly appreciated. Thank you, -Chris
>
> ref: http://api.rubyonrails.org/classes/ActiveRecord/Base.html
>
> --
> Christopher D. Cera
> CTO, Hovitate LLC
> http://vuzit.com
> P: 215.435.2289
> F: 267.295.7369
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--
Evan Weaver
Cloudburst, LLC
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