Arangodb更新查询失败，错误1213

Question

var docs = ///aql
for(var i = 0; i< docs.length;i++) {
    db._collection(edgeCol).update(docs[i]._id, {"a": 10});
}

I get following error:

[ArangoError 1213: cross collection request not allowed] Error: cross collection request not allowed

Answer 1

1213 (cross-collection request) means that you are calling update on a collection but specify the id of a document from another collection for update. This is unsupported.

What you could do instead is either update by _key , ie

for(var i = 0; i< docs.length;i++) {
    db._collection(edgeCol).update(docs[i]._id, {"a": 10});
}

or update using the db object and its _update method (and omitting the collection object):

for(var i = 0; i< docs.length;i++) {
    db._update(docs[i]._id, {"a": 10});
}