Jim Steil | 14 May 17:36

[Fwd: Re: Log changes to rows]


Oleg Broytmann wrote:
On Tue, May 13, 2008 at 10:48:24AM -0500, Jim Steil wrote:
Ok, I've gotten my events to work, but now have another newb question that I can't seem to find the answer to. In the update listener I get the kwargs sent in to find which columns have been changed. I can reference them as a dictionary. I want to compare the fields sent in to see if they've changed and to get the previous value of them, but cannot find how to reference the specific column using a variable. What I'd like to do is the following: def updateListener(currentValues, newValues): for columnName in newValues: newValue = newValues[columnName] currentValue = currentValues[columnName] ----- This is what doesn't work # log changes here The currentValues[columnName] doesn't work. How can I get the old value of the changed column?
I believe 'currentValues' is the object (SQLObject) to be changed, not a dictionary. Get the values by calling getattr(currentValues, columnName). Oleg.
Thanks Oleg, that is exactly what I needed.

    -Jim
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