Eager Loading : How to disable specific fields of included table - postgresql

Question

I am trying to do Eager Loading in Sequelize with PostgreSQL where I need to find the Users which have a given specific Mail id or basically, i am performing find operation on Mail model while using include to include User model
UserModel :
module.exports = function (sequelize, Sequelize) {
var User = sequelize.define('User', {
userId: {
type: Sequelize.INTEGER,
primaryKey: true,
autoIncrement: true
},
firstname: {
type: Sequelize.STRING,
require: true
},
lastname: {
type: Sequelize.STRING,
require: true
},
age: {
type: Sequelize.INTEGER,
require: true
},
phone: {
type: Sequelize.STRING,
require: true
},
location: {
type: Sequelize.STRING,
require: true
},
createdAt: {
type: Sequelize.DATE,
defaultValue: Sequelize.NOW
},
updatedAt: {
type: Sequelize.DATE,
defaultValue: Sequelize.NOW
}
});
return User;
};
MailModel :
module.exports = function (sequelize, Sequelize) {
var User = require('./User.js')(sequelize, Sequelize)
var Mail = sequelize.define('Mail', {
name: {
type: Sequelize.STRING,
require: true
}
});
Mail.belongsTo(User);
return Mail;
};
MailController :
var db = require('../services/db.js');
module.exports = {
create: function (req, res, next) {
var Mailm = db.MailModel;
var name = req.body;
try {
db.sequelize.sync().then(function () {
Mailm.create(name).then(function (found) {
return res.json({
success: true,
message: found.get({
plain: true
})
});
})
});
} catch (ex) {
res.json({
success: false,
exception: ex
});
return;
}
},
query: function (req, res, next) {
var Mailm = db.MailModel;
var Userm = db.UserModel;
var name = req.body;
var option = {};
option.where = name;
option.include = [{
model: Userm
}];
try {
Mailm.findAll(option).then(function (found) {
console.log(found);
return res.json({
success: true,
message: found
});
});
} catch (ex) {
res.json({
success: false,
exception: ex
});
return;
}
}
};
It is returning me the records of both User and Mail table in exactly the right way .
Output :
{
"success": true,
"message":[
{
"id": 2,
"name": "Mailb2",
"createdAt": "2015-07-30T07:32:51.807Z",
"updatedAt": "2015-07-30T07:32:51.807Z",
"UserUserId": 2,
"User":{
"userId": 2,
"firstname": "Prerna",
"lastname": "Jain",
"age": 20,
"phone": "9812123456",
"location": "Sirsa",
"createdAt": "2015-07-30T07:30:48.000Z",
"updatedAt": "2015-07-30T07:30:48.000Z"
}
}
]
}
But I want to disable createdAt and updatedAt fields of User table so that it does not give me these two fields in the output for User.
I have tried a lot as of how to do this but still in vain.Can anyone please help me out.

Answer 1

I bet this is coming late, add attribute/properties to your models called timestamps, it accepts a boolean as a value. For example:
module.exports = function (sequelize, Sequelize) {
var User = require('./User.js')(sequelize, Sequelize)
var Mail = sequelize.define('Mail', {
name: {
type: Sequelize.STRING,
require: true
}
},
{
// This does the magic
timestamps: false,
});
Mail.belongsTo(User);
return Mail;
};
Also, add it to the User model:
var User = sequelize.define('User', {
userId: {
type: Sequelize.INTEGER,
primaryKey: true,
autoIncrement: true
},
firstname: {
type: Sequelize.STRING,
require: true
},
lastname: {
type: Sequelize.STRING,
require: true
},
age: {
type: Sequelize.INTEGER,
require: true
},
phone: {
type: Sequelize.STRING,
require: true
},
location: {
type: Sequelize.STRING,
require: true
},
createdAt: {
type: Sequelize.DATE,
defaultValue: Sequelize.NOW
},
updatedAt: {
type: Sequelize.DATE,
defaultValue: Sequelize.NOW
}
},
{
timestamps: false
});
return User;
};

Answer 2

You can use
Model.findAll({
attributes: { exclude: ['baz'] }
});
more examples with attributes - http://docs.sequelizejs.com/en/latest/docs/querying/#attributes