NaN userId while setting userContext loopback - loopbackjs

Question

I have a model UserB2b extended from User. I have enabled authorization using server.authEnabled in the boot script so that all requests pass through the auth middleware.
Problem: Whenever I have an non-numeric username in my UserB2b model, I get a NaN userId from AccessToken.findForRequest in loopback/common/model/access-token.js.
Here are my models.
AccessToken
{
"name": "AccessToken",
"base": "AccessToken",
"idInjection": false,
"options": {
"validateUpsert": true
},
"mysql": {
"table": "AccessToken"
},
"properties": {
"ttl": {
"type": "Number",
"required": false,
"length": null,
"precision": 10,
"scale": 0,
"mysql": {
"columnName": "ttl",
"dataType": "int",
"dataLength": null,
"dataPrecision": 10,
"dataScale": 0,
"nullable": "Y"
},
"_selectable": true
},
"created": {
"type": "Date",
"required": false,
"length": null,
"precision": null,
"scale": null,
"mysql": {
"columnName": "created",
"dataType": "datetime",
"dataLength": null,
"dataPrecision": null,
"dataScale": null,
"nullable": "Y"
},
"_selectable": true
},
"userId": {
"type": "String",
"required": false,
"length": null,
"precision": 10,
"scale": 0,
"mysql": {
"columnName": "userId",
"dataType": "varchar",
"dataLength": null,
"dataPrecision": 10,
"dataScale": 0,
"nullable": "Y"
},
"_selectable": true
},
"id": {
"type": "String",
"id": true,
"required": false,
"length": 255,
"precision": null,
"scale": null,
"mysql": {
"columnName": "id",
"dataType": "varchar",
"dataLength": 255,
"dataPrecision": null,
"dataScale": null,
"nullable": "N"
},
"_selectable": false
},
"model": {
"type": "string",
"id": false,
"length": 100,
"precision": null,
"scale": null,
"mysql": {
"columnName": "model",
"dataType": "varchar",
"dataLength": 100,
"dataPrecision": null,
"dataScale": null,
"nullable": "N"
},
"_selectable": false
}
},
"validations": [],
"relations": {
"userB2B":{
"type":"belongsTo",
"model":"UserB2b",
"foreignKey":"userId"
}
},
"acls": [
{
"accessType": "*",
"principalType": "ROLE",
"principalId": "$everyone",
"permission": "DENY"
},
{
"accessType": "*",
"principalType": "ROLE",
"principalId":"$authenticated",
"permission": "ALLOW"
}
],
"methods": {}
}
UserB2b
{
"name": "UserB2b",
"base": "User",
"idInjection": false,
"options": {
"validateUpsert": true
},
"mysql": {
"table": "user_b2b"
},
"scope": {
"where": {
"deleted": 0
}
},
"properties": {
"username": {
"type": "String",
"id": true,
"required": true,
"length": 255,
"precision": null,
"scale": null,
"mysql": {
"columnName": "username",
"dataType": "varchar",
"dataLength": 255,
"dataPrecision": null,
"dataScale": null,
"nullable": "N"
},
"_selectable": false
},
"password": {
"type": "String",
"required": true,
"length": 1000,
"precision": null,
"scale": null,
"mysql": {
"columnName": "password",
"dataType": "varchar",
"dataLength": 1000,
"dataPrecision": null,
"dataScale": null,
"nullable": "N"
},
"_selectable": false
},
"name": {
"type": "String",
"required": true,
"length": 255,
"precision": null,
"scale": null,
"mysql": {
"columnName": "name",
"dataType": "varchar",
"dataLength": 255,
"dataPrecision": null,
"dataScale": null,
"nullable": "N"
},
"_selectable": false
},
"contactNumber": {
"type": "String",
"required": true,
"length": 255,
"precision": null,
"scale": null,
"mysql": {
"columnName": "contact_number",
"dataType": "varchar",
"dataLength": 255,
"dataPrecision": null,
"dataScale": null,
"nullable": "N"
},
"_selectable": false
},
"createdAt": {
"type": "Date",
"required": false,
"length": null,
"precision": null,
"scale": null,
"mysql": {
"columnName": "created_at",
"dataType": "timestamp",
"dataLength": null,
"dataPrecision": null,
"dataScale": null,
"nullable": "Y"
},
"_selectable": true
},
"updatedAt": {
"type": "Date",
"required": false,
"length": null,
"precision": null,
"scale": null,
"mysql": {
"columnName": "updated_at",
"dataType": "timestamp",
"dataLength": null,
"dataPrecision": null,
"dataScale": null,
"nullable": "Y"
},
"_selectable": true
},
"deleted": {
"type": "Number",
"required": false,
"length": null,
"precision": 3,
"scale": 0,
"mysql": {
"columnName": "deleted",
"dataType": "tinyint",
"dataLength": null,
"dataPrecision": 3,
"dataScale": 0,
"nullable": "Y"
},
"_selectable": true
},
"email": false,
"created": false,
"lastUpdated": false,
"credentials": false,
"challenges": false,
"status": false,
"verificationToken": false,
"realm": false,
"emailVerified": false
},
"validations": [],
"relations": {
"accessTokens": {
"type": "hasMany",
"model": "Accesstoken",
"foreignKey": "userName"
}
},
"methods": {}
}
Here is the raw packet that I get from the debugger
<-- RowDataPacket
RowDataPacket {
id: 'BJVqc7CtRXzPVVtTyJqmUabijgLRRHBe3sqcCh0bh5NuGBIZCnY8nwLIGeB6dILv',
ttl: 12096000,
created: Tue May 24 2016 05:44:18 GMT+0000 (UTC),
model: 'UserB2b',
userId: 'max1' }
and the query that loopback fires after that is
SELECT `username`,`password`,`name`,`contact_number`,`created_at`,`updated_at`,`deleted` FROM `user_b2b` WHERE (`username`=?) AND (`deleted`=?) ORDER BY `username` LIMIT 1, params: ["NaN",0]
Is there something that needs to be corrected here ?

Answer 1

it seems something wrong here in your access token:
"userId": {
"type": "String",
"required": false,
"length": null,
"precision": 10,
"scale": 0,
"mysql": {
"columnName": "userId",
"dataType": "int",
The type you are using int and you are passing as varchar item and this will throw exception that string is not a number(NAN).
Either change the target type to string/varchar or change the source data type that you are using that matched with target.
Hope this will help you.