I am trying to create a simple server application in Node.js using the waterline-orientdb package where there are several users who can invoke several methods. Before a user can do anything, the user needs to authenticate with his username and password. Within this authentication the user object is given a token that will be piggybacked with the future requests. When a user is given a token, an update query is invoked. When invoking the update request I get the following error:
ERROR err: { [OrientDB.RequestError: expression item ']' cannot be resolved because current record is NULL]
name: 'OrientDB.RequestError',
message: 'expression item \']\' cannot be resolved because current record is NULL',
data: {},
previous: [],
id: 1,
type: 'com.orientechnologies.orient.core.exception.OCommandExecutionException',hasMore: 0 }
The strange thing is that the update is executed, so this error doesn't have influence on the update request. But because I want to catch all errors, I can't just ignore this.
My model looks like this:
module.exports = {
tableName: 'User',
identity: 'dbuser',
schema: true,
attributes: {
id: {
type: 'string',
primaryKey: true,
columnName: '@rid'
},
username: {
type: 'string',
required: true,
unique: true
},
password: {
type: 'string',
required: false
},
token: {
type: 'string'
},
follows: {
collection: 'dbuser',
via: 'followed',
dominant: true
},
followed: {
collection : 'dbuser',
via: 'follows'
}
};
As you can see, I'm associating two users with eachother so that one user can follow the activities of the other user. When I delete the association (so follows and followed) the error also dissapears.
The piece of code where the updates happens looks like this:
user[0].token = generateToken(user[0])
dbuser.update({
id: user[0].id
}, user[0]).exec(function (error, data) {
if (error) res.json(401, {
code: 401,
error: "Token could not be updated"
})
res.json(user);
});
Does anyone has an idea on how to avoid this behavior or what the error even means?
