[Erp5-dev] Deleting a list of objects in a container

[Guillaume Michon]

Hi all,


The following code does not work as expected :

for o in container.contentValues():
container._delObject(o.getId())

The reason is that python does not calculate the expression
"container.contentValues()" only one time, but at each passage through the
for. So modifying content of container changes the result of the expression.
Then the behavior is undeterminable.

The secured way to do is to build a list of ids to delete, then delete them :

to_delete = []
for o in container.contentValues():
to_delete.append(o.getId())
container.deleteContent(to_delete)


Regards,


Guillaume

[Guillaume Michon]

Post by Guillaume Michon
to_delete = []
? ?to_delete.append(o.getId())
? ?container.deleteContent(to_delete)

Of course, it is :
to_delete = []
for o in container.contentValues():
?to_delete.append(o.getId())
container.deleteContent(to_delete)


Sorry

Guillaume

[Stefane Fermigier]

Post by Guillaume Michon
Hi all,
container._delObject(o.getId())
The reason is that python does not calculate the expression
"container.contentValues()" only one time, but at each passage through the
for. So modifying content of container changes the result of the expression.
Then the behavior is undeterminable.
to_delete = []
to_delete.append(o.getId())
container.deleteContent(to_delete)

You mean probably:

to_delete = []
for o in container.contentValues():
to_delete.append(o.getId())
container.deleteContent(to_delete)

But I think this would be simpler:

container.deleteContent(container.contentIds())

S.
--
St?fane Fermigier, Tel: [phone] (mobile).
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