I am trying to write some somewhat complicated ReQL that deletes a single value from an array in a field, or deletes the record entirely if that value is the only one in the array.
I thought I had worked it out using branch/do/offsetAt, but then I ran into this "Argument 1 to deleteAt may not be undefined." error and I'm at a loss as to what the fix is.
r.branch( r.db('db').table('table').get('uuid').eq(null), {"deleted": 0, "errors": 0, "inserted": 0, "replaced": 0, "skipped": 0, "unchanged": 1}, r.db('db').table('table').get('uuid').getField('array_field').eq(['value']), r.db('db').table('table').get('uuid').delete(), r.do( r.db('db').table('table').get('uuid').getField('array_field').offsetsOf('value'), function(index) { return r.branch( index.eq([]), {"deleted": 0, "errors": 0, "inserted": 0, "replaced": 0, "skipped": 0, "unchanged": 1}, r.db('db').table('table').get('uuid').update({"array_field": r.row('array_field').deleteAt(index[0]) }) ) } ))Also, as a side question, is there a more efficient way to do this without constantly fetching the record over and over calling .get()