User model giving email validation error in loopback3 - loopbackjs

Question

I have created a model MyUser based on the User model as follows:
{
"name": "MyUser",
"base": "User",
"idInjection": true,
"options": {
"validateUpsert": true
},
"ownerRelations": true,
"emailVerificationRequired": true,
"hidden": [
"email",
"emailVerified"
],
"properties": {
"firstName": {
"type": "string",
"required": true
},
"lastName": {
"type": "string",
"required": true
},
"email": {
"type": "string",
"required": true
}
},
"validations": [],
"relations": {
"accessTokens": {
"type": "hasMany",
"model": "CustomAccessToken",
"polymorphic": {
"foreignKey": "userId",
"discriminator": "principalType"
},
"options": {
"disableInclude": true
}
}
},
"acls": [
{
"accessType": "*",
"principalType": "ROLE",
"principalId": "$everyone",
"permission": "DENY"
},
{
"principalType": "ROLE",
"principalId": "$everyone",
"permission": "ALLOW",
"property": "create"
}
],
"methods": {}
}
It works perfectly on my local server. But when I host it on aws ec2, only the first time user is created. Next time even if I give different email id, I get email verification error as follows:
The 'MyUser' instance is not valid. Details:emailEmail already exists (value: undefined).
Now if I delete the 1st record and try to create user, it works. So, only 1st record is getting inserted and post that for any unique email also, I am getting validation error. I am not sure why this is happening.

Answer 1

I was able to figure out the problem. I have kept email as a hidden field. loopback has "prohibitHiddenPropertiesInQuery": true by default which does not allow hidden properties in query. As a result, during user validation, email was ignored in the query in loopback-juggler/lib/validation.js. Upon setting prohibitHiddenPropertiesInQuery to false, it works.
However, I am still not sure why it was working in development mode on my local server. prohibitHiddenPropertiesInQuery is by default true, so it should not have worked in development mode also. If anyone have any answer to this, please do let me know.