On Sunday, May 8, 2016 at 4:22:09 AM UTC-7, Peter Marsh wrote:
>
> I'm using Postgres and Sequel::Model and Model#lock!, I've recently come
> across a situation where I need to lock a row/model with a specific lock
> type, 'FOR NO KEY UPDATE' instead of 'FOR UPDATE'.
>
> As an example, this is what Sequel::Model currently provides
>
> example = Example.first!
> example.lock!
> # SELECT * FROM examples WHERE id = ? FOR UPDATE
>
> And what I'd ideally like is something like this:
>
> example = Example.first!
> example.no_key_lock!
> # SELECT * FROM examples WHERE id = ? FOR NO KEY UPDATE
>
> I'm happy to submit a patch for this (I think it's generally useful :) ),
> but I wondered what the best way to implement/put it would be?
>
> I can see two possibilities:
>
> 1. Change Sequel::Model#lock! to accept different lock types (like
> Sequel::DataSet#lock_style), so something like:
>
> example = Example.first!
> example.lock!('FOR NO KEY UPDATE')
>
I think this is probably the best option, as it is the most generic.
Thanks,
Jeremy
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