txng.collection(col).insert(row, return_new=True) does not return a new row

return_new=True work perfectly as announced with normal insertion into a collection. However an insertion using an transaction manager does not return anything like:

row = txn.collection('mycol').insert(data, return_new=True)
# row always None

Tested with 3.11.0

[dancollins34]

So it looks like you might be able to do something like this in your query:

txn = db.transaction(write=col_name)
result = txn.execute(
    command='''
    function (params) {{
        var db = require('internal').db;
        var a = db.{col}.save({{ '_key': '1', 'val': params.one }});
        var b = db.{col}.save({{ '_key': '2', 'val': params.two }});
        return [a,b];
    }}'''.format(col=col_name),
    params={'one': 3, 'two': 4}
)

And that should return the meta information including the _key on each object.

[joowani]

@zopyx In python-arango version 4.0.0, transactions return job objects allowing result retrieval after commit. You can read more about it here. Please note that 4.0.0 is not backward compatible and you may need to significantly change your code. Cheers.