On Monday, 3 October 2011 14:42:36 UTC+1, Victor Hooi wrote:
>
> heya,
>
> I'm coding up a Django form which will let the user upload a CSV file, then
> create and save multiple Model instances for each row in the CSV file.
>
> At the moment, I'm trying to decide where to put the code that parses the
> CSV file and creates/saves the models.
>
> I don't think it'd be an instance method on the Model itself, since that's
> for working on individual instances, and you'd need to pass a valid instance
> to the method.
>
> Would it go in a custom Model Manager? Or should I have this logic in the
> View itself?
>
> Also, I need to figure out a good way of passing ValidationErrors from the
> model.save() and passing them back to the view to display the user.
>
> What would be a good way of hooking that up?
>
> Cheers,
> Victor
>
You could put it in the Manager, certainly -
MyModel.objects.from_csv(filename) would be fine.
An alternative is to use a classmethod on the model, since that doesn't
suffer from the drawbacks of the instance method:
class MyModel(models.Model):
@classmethod
def from_csv(cls, filename):
...
for row in csv:
obj = cls(...)
obj.save()
--
DR.
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