Rails - Apr 2011 - how to update data

hi, I have json string in json request.
i want to update the database using that string.
how can i do that?
There would be a multipal object in this string.

sample string is:

[{"product":{"amt":300,"created_at":"2011-03-28T05:46:52Z","id":1,"prodnm":"maruti","qty":1,"rate":12,"updated_at":"2011-03-28T05:46:52Z"}},{"product":{"amt":2000,"created_at":"2011-04-18T09:02:45Z","id":2,"prodnm":"lux","qty":2,"rate":12,"updated_at":"2011-04-18T09:02:45Z"}}]

Can anybody help me???

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News Aanad wrote in post #993479:
> hi, I have json string in json request.
> i want to update the database using that string.
> how can i do that?
> There would be a multipal object in this string.
>
> sample string is:
>
> 
[{"product":{"amt":300,"created_at":"2011-03-28T05:46:52Z","id":1,"prodnm":"maruti","qty":1,"rate":12,"updated_at":"2011-03-28T05:46:52Z"}},{"product":{"amt":2000,"created_at":"2011-04-18T09:02:45Z","id":2,"prodnm":"lux","qty":2,"rate":12,"updated_at":"2011-04-18T09:02:45Z"}}]
>
> Can anybody help me???
Deserialize the string into the separate product objects (JSON.parse 
from http://flori.github.com/json/ perhaps?), then use the normal object 
methods to perists the data I think.

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