Users Model defined like this.
const db = require ('../../config/db_config');
const users = db.sequelize.define('users', {
id: {
type: db.DataTypes.INTEGER,
primaryKey: true,
autoIncrement: true,
},
first_name: {
type: db.DataTypes.STRING(150),
},
last_name: {
type: db.DataTypes.STRING(150),
},
email: {
type: db.DataTypes.STRING(256),
required: true,
unique: true
},
password: {
type: db.DataTypes.STRING,
},
student_id: {
type: db.DataTypes.STRING
},
status: {
type: db.DataTypes.BOOLEAN,
required: true,
defaultValue: 0
},
is_deleted: {
type: db.DataTypes.BOOLEAN,
required: true,
defaultValue: 0
},
createdAt: db.DataTypes.DATE,
updatedAt: db.DataTypes.DATE,
});
module.exports = users;
social_logins Model defined like this
const db = require ('../../config/db_config');
const socialLogins = db.sequelize.define('social_logins', {
id: {
type: db.DataTypes.INTEGER,
primaryKey: true,
autoIncrement: true,
},
token: {
type: db.DataTypes.STRING
},
tokenType: {
type: db.DataTypes.STRING
},
fb_id: {
type: db.DataTypes.STRING
},
user_id: {
type: db.DataTypes.INTEGER
},
is_deleted: {
type: db.DataTypes.BOOLEAN,
required: true,
defaultValue: false
}
}, { underscored: true, timestamp: true, tableName: 'social_logins' });
module.exports = socialLogins;
User model associated with the social_logins model using belongsTo function
socialLoginsModel.belongsTo(users)
Sequelize throws eagerLoadingError
Error EagerLoadingError [SequelizeEagerLoadingError]: social_logins is
not associated to users!
While running this query given below.
const userModel = require ('./users_model');
const socialLoginModel = require('../social_logins/social_logins_model');
let id = "123456";
let email = "ex#example.com";
userModel.findOne({
where: { email },
include: [{
model: socialLogins,
where: {
fb_id: id
}
}]
});
you should have associations like this based on your model names
socialLogins.belongsTo(users) & users.hasOne(socialLogins)/ users.hasMany(socialLogins) based on your relations being defined in DB
Related
Trying to work with sequalize association ( belongsTo and hasMany() ) but when i tries to query findAll with include the Model which was associated it fails by saying Models are not associated.
User Model
const {DATE, STRING, INTEGER} = require("sequelize");
const {USER} = require("../config/db.config");
module.exports = (sequelize, Sequelize) => {
const User = sequelize.define("Users", {
id: {
primaryKey: true, type: INTEGER, required: true, autoIncrement: true
}, phoneNumber: {
type: STRING, required: true, unique: true
}, firstname: {
type: STRING, required: true
}, middlename: {
type: STRING, required: false
}, region: {
type: STRING, required: true
}, district: {
type: STRING, required: true
}, street: {
type: STRING, required: true
}, lastname: {
type: STRING, required: true,
}, 'type': {
type: STRING, required: true,
}, email: {
type: STRING, required: true, unique: true
}, status: {
type: Sequelize.ENUM("ACTIVE", "NOT-ACTIVE", "SUSPENDED"), defaultValue: "NOT-ACTIVE",
}, createdAt: {
type: DATE,
}, updatedAt: {
type: DATE,
}
});
User.associate = function (models) {
User.hasMany(models.Students, {foreignKey: 'userId', as: 'user'});
}
return User;
};
Student Model
const {DATE, STRING, INTEGER} = require("sequelize");
module.exports = (sequelize, Sequelize) => {
const Student = sequelize.define("Students",
{
id: {
primaryKey: true, type: STRING, required: true
}, userId: {
type: INTEGER, required: true,
}, status: {
type: Sequelize.ENUM("ACTIVE", "NOT-ACTIVE", "SUSPENDED"), defaultValue: "NOT-ACTIVE",
},
level: {
type: STRING, required: true,
}, createdAt: {
type: DATE,
}, updatedAt: {
type: DATE,
}
});
Student.associate = function (models) {
Student.belongsTo(models.Users, {foreignKey: 'userId', as: 'user'})
Student.belongsToMany(models.Classes, {through: 'StudentClass',})
}
return Student;
};
I have tried to query them by using the bellow function but i got nothing
function getAllStudents() {
Student.findAll({include: [{model: User, as: 'user', required: true}]}).then(value => {
console.log(value)
return value;
}).catch(reason => {
console.error(reason)
})
}
But i get the following
Result i get
I am trying to write a join query using belongsTo but getting error:
Error: LearningCertificateEvent.belongsTo called with something that's
not a subclass of Sequelize.Model
at Function. (/Users/msmexmac/node/msmex-backend/msmex-api/node_modules/sequelize/lib/associations/mixin.js:93:13)
I am trying to fetch events related to learning cerfificate events. I tried every thing but it does not work somehow.
My models are as follows:
LearningCertificate Model
"use strict";
const Sequelize = require("sequelize");
const sequelize = require("../helpers/db");
const LearningCertificateEvent = require("./LearningCertificateEvent");
const LearningCertificate = sequelize.define(
"LearningCertificate",
{
id: {
autoIncrement: true,
type: Sequelize.BIGINT,
primaryKey: true,
},
userId: {
type: Sequelize.INTEGER,
field: "user_id",
},
certificateURL: {
type: Sequelize.STRING,
field: "certificate_url",
},
certificatePNGURL: {
type: Sequelize.STRING,
field: "certificate_png_url",
},
certificateType: {
type: Sequelize.STRING,
field: "certificate_type",
},
createdAt: {
type: Sequelize.BIGINT,
field: "created_at",
},
updatedAt: {
type: Sequelize.BIGINT,
field: "updated_at",
},
},
{
timestamps: false,
tableName: "learning_certificate",
}
);
LearningCertificate.hasMany(LearningCertificateEvent, {
foreignKey: "certificateId",
});
module.exports = LearningCertificate;
The second model is : LearningCertificateEvent Model
"use strict";
const Sequelize = require("sequelize");
const sequelize = require("../helpers/db");
const MsmexEvent = require("./MsmexEvent");
const LearningCertificateEvent = sequelize.define(
"LearningCertificateEvent",
{
id: {
autoIncrement: true,
type: Sequelize.BIGINT,
primaryKey: true,
},
userId: {
type: Sequelize.INTEGER,
field: "user_id",
},
certificateId: {
type: Sequelize.INTEGER,
field: "certificate_id",
},
eventId: {
type: Sequelize.INTEGER,
field: "event_id",
},
createdAt: {
type: Sequelize.BIGINT,
field: "created_at",
},
updatedAt: {
type: Sequelize.BIGINT,
field: "updated_at",
},
},
{
timestamps: false,
tableName: "learning_certificate_event",
}
);
LearningCertificateEvent.belongsTo(MsmexEvent, {
foreignKey: "eventId",
});
// MsmexEvent.hasMany(LearningCertificateEvent, {
// foreignKey: "eventId",
// });
module.exports = LearningCertificateEvent;
And last model is: MsmexEvent Model
"use strict";
const Sequelize = require("sequelize");
const sequelize = require("../helpers/db");
const LearningCertificateEvent = require("./LearningCertificateEvent");
const Event = sequelize.define(
"Event",
{
id: {
autoIncrement: true,
type: Sequelize.BIGINT,
primaryKey: true,
},
identifier: {
type: Sequelize.STRING,
field: "identifier",
},
expertId: {
type: Sequelize.INTEGER,
field: "expert_id",
},
waitList: {
type: Sequelize.BOOLEAN,
field: "waitList",
},
},
{
timestamps: false,
tableName: "msmex_event",
}
);
module.exports = Event;
The query which I have written is as follows:
return LearningCertificate.findAll({
where: {
userId: userId,
},
include: [
{
model: LearningCertificateEvent,
required: true,
include: [
{
model: MsmexEvent,
required: true,
},
],
},
],
order: [["id", "DESC"]],
});
In query however if I replace MsmexEvent with some other table for example User it works fine.
Can some one please help ?
I have models: Business, Contributor, Feedback.
I have created relationship between Feedback and Contributor, and Feedback and Business like this:
Feedback.belongsTo(Business)
Feedback.belongsTo(Contributor)
The corresponding foreign key attributes are added to the table Feedback. Question is, how to populate them with IDs coming from Business and Contributor table records?
This approach only gets the first record. If I use findAll(), then I get undefined.
for (let assetsUrl of assetUrls) {
...
var businesses = null;
var reviews = null;
...
var timestamp = Math.floor(Date.now() / 1000);
var b_id = await Business.findOne({
attributes: ["id"],
})
var c_id = await Contributor.findOne({
})
businesses = await Business.upsert({
...
last_scraped: timestamp
});
reviews = await Review.upsert(
{
contributor_id: c_id.id,
business_id: b_id.id,
last_scraped: timestamp,
},
)
}
Business model:
class Business extends Model {}
Business.init(
{
id: {
type: Sequelize.INTEGER,
primaryKey: true,
autoIncrement: true,
},
site: {
type: Sequelize.STRING,
},
name: {
type: Sequelize.STRING,
},
business_type: {
type: Sequelize.STRING,
unique: false,
defaultValue: "",
},
address: {
type: Sequelize.TEXT,
// allowNull defaults to true
},
price: {
type: Sequelize.STRING,
},
url: {
type: Sequelize.STRING,
allowNull: false,
unique: true,
},
last_scraped: {
type: Sequelize.INTEGER,
defaultValue: Math.floor(Date.now() / 1000)
},
},
{
sequelize,
modelName: "business",
timestamps: true,
createdAt: false,
updatedAt: false,
underscored: true
}
);
Business === sequelize.models.Business;
Business.sync();
Contributor model:
class Contributor extends Model {}
Contributor.init(
{
id: {
type: Sequelize.INTEGER,
primaryKey: true,
autoIncrement: true,
},
site: {
type: Sequelize.STRING,
},
name: {
type: Sequelize.STRING,
unique: false,
},
location: {
type: Sequelize.STRING,
unique: false,
},
photo: {
type: Sequelize.STRING,
unique: false,
},
url: {
type: Sequelize.STRING,
allowNull: false,
unique: true,
},
status: {
type: Sequelize.SMALLINT,
},
last_scraped: {
type: Sequelize.INTEGER,
defaultValue: Math.floor(Date.now() / 1000)
},
},
{
sequelize,
modelName: "contributor",
timestamps: true,
createdAt: false,
updatedAt: false,
underscored: true,
}
);
Contributor === sequelize.models.Contributor;
Contributor.sync();
Feedback model:
class Feedback extends Model {}
Feedback.init(
{
contributor_id: {
type: Sequelize.INTEGER,
},
business_id: {
type: Sequelize.INTEGER,
},
date: {
type: Sequelize.STRING,
unique: false,
},
rating: {
type: Sequelize.STRING,
unique: false,
},
content: {
type: Sequelize.STRING,
unique: false,
},
last_scraped: {
type: Sequelize.INTEGER,
defaultValue: Math.floor(Date.now() / 1000)
},
},
{
sequelize,
modelName: "feedback",
timestamps: true,
createdAt: false,
updatedAt: false,
underscored: true,
}
);
Feedback.belongsTo(Contributor, { foreignKey: 'contributor_id' })
Feedback.belongsTo(Business, { foreignKey: 'business_id'})
Feedback=== sequelize.models.Review;
Feedback.sync();
A Good use case for model streaming but I think sequelize doesn't
support it yet
With your approch, using findOne combined with offset option you can
create/update the Feedback model like this.
// Get number of records to avoid unnecessary findOne in the loop
const bRecordCount = await Business.count();
const cRecordCount = await Contributor.count();
for (let i = 0; i < assetUrls.length; i++) {
const assetsUrl = assetUrls[i];
// ...
let bRecord = null;
let cRecord = null;
let options = {
attributes: ["id"],
// order by id to be sure we get different record each time
order: [['id', 'ASC']],
raw: true,
offset: i //skip already taken records
};
try {
if (i < bRecordCount && i < cRecordCount) {
bRecord = await Business.findOne(options)
cRecord = await Contributor.findOne(options)
}
if (bRecord && cRecord) {
feedback = await Feedback.upsert({
contributor_id: cRecord.id,
business_id: bRecord.id,
last_scraped: timestamp,
//...
});
}
} catch (err) {
console.log(err);
}
}
If you have many records you should consider using
findAll()
with offset and limit options,
then do a bulkCreate()
with updateOnDuplicate option to avoid making many database queries
To get Feedback items with certain attributes call findAll:
var feedback = await Feedback.findAll({
attributes: ['contributor_id', 'business_id', 'last_scraped']
})
I'm working with Sequelize 5.7, trying to utilize virtual datatype,
to pull related information into a model.
Given simplified company and user models, how do I get company.name
into user.companyname ?
company
let Schema = sequelize.define(
"company",
{
id: {
type: DataTypes.INTEGER.UNSIGNED,
autoIncrement: true,
primaryKey: true
},
name: {
type: DataTypes.STRING(45)
}
}
);
user
let Schema = sequelize.define(
"user",
{
id: {
type: DataTypes.INTEGER.UNSIGNED,
autoIncrement: true,
primaryKey: true
},
login: {
type: DataTypes.STRING(45),
unique: true
},
company: {
type: DataTypes.INTEGER.UNSIGNED,
references: {
model: sequelize.model('company'),
key: 'id'
}
},
/* This companyname contruct is pure fantasy, and the target of my question */
companyname: {
type: new DataTypes.VIRTUAL(DataTypes.STRING,['company']),
references: {
model: 'company',
key: 'name'
}
}
}
);
In your case, I think it is a better idea to use a relationship (an association)
Sequelize Associations
const User = sequelize.define('user', {
id: {
type: DataTypes.INTEGER.UNSIGNED,
autoIncrement: true,
primaryKey: true
},
login: {
type: DataTypes.STRING(45),
unique: true
},
company_id: {
type: DataTypes.INTEGER.UNSIGNED,
},
});
const Company = sequelize.define('company', {
id: {
type: DataTypes.INTEGER.UNSIGNED,
autoIncrement: true,
primaryKey: true,
},
name: {
type: DataTypes.STRING,
},
});
User.belongsTo(Company, {
foreignKey: 'company_id', // you can use this to customize the fk, default would be like companyId
});
Company.hasMany(User);
Then when calling your model you do something like:
User.findAll({ include: Company }).then(users => console.log(users));
I solved the problem by using type: DataTypes.VIRTUAL in model
const { Model, DataTypes } = require('sequelize');
class User extends Model {
static init(sequelize) {
super.init({
id: {
type: DataTypes.INTEGER.UNSIGNED,
autoIncrement: true,
primaryKey: true
},
login: {
type: DataTypes.STRING(45),
unique: true
},
company_id: {
type: DataTypes.INTEGER.UNSIGNED,
},
companyname:{
type: DataTypes.VIRTUAL,
get() {
return this.Company?.get().name;
},
set(/*value*/) {
throw new Error('Do not try to set the `companyname` value!');
}
},
}, {
sequelize
})
}
static associate(models) {
this.belongsTo(Company, {
foreignKey: 'company_id',
});
}
}
module.exports = User;
to search just include the association :
User.findAll({ include: Company })
I usually create each model using 'class' in different files, but if you need, just include the code below in the #jalex19 solution
companyname:{
type: DataTypes.VIRTUAL,
get() {
return this.Company?.get().name;
},
set(/*value*/) {
throw new Error('Do not try to set the `fullName` value!');
}
},
Can i use SET variable in sequelize in nodejs?
Sequelize
Model
Session Model
"use strict";
module.exports = (sequelize, DataTypes) => {
const Sessions = sequelize.define(
"sessions",
{
id: { type: DataTypes.INTEGER, primaryKey: true, autoIncrement: true },
challenge_id: {
type: DataTypes.INTEGER,
references: {
model: "challenges",
key: "id"
},
allowNull: false
},
createdAt: { type: DataTypes.DATE },
createdBy: {
type: DataTypes.INTEGER,
references: {
model: "users",
key: "id"
},
allowNull: false
},
showAtLeaderboard: { type: DataTypes.ENUM("yes", "no") },
sessionFile: { type: DataTypes.STRING },
score: { type: DataTypes.INTEGER },
},
{
timestamps: false,
underscored: true
}
);
return Sessions;
};
Challenge Model
"use strict";
module.exports = (sequelize, DataTypes) => {
const Challenges = sequelize.define(
"challenges",
{
id: { type: DataTypes.INTEGER, primaryKey: true, autoIncrement: true },
song_id: { type: DataTypes.INTEGER },
challenge_name: { type: DataTypes.STRING },
challengeDescription: { type: DataTypes.STRING },
challengeImg: { type: DataTypes.STRING },
challengeType: { type: DataTypes.STRING },
coins: { type: DataTypes.INTEGER },
createdAt: { type: DataTypes.DATE },
expireAt: { type: DataTypes.DATE },
isActive: { type: DataTypes.ENUM("yes", "no") },
tags: { type: DataTypes.STRING }
},
{
timestamps: false,
underscored: true
}
);
return Challenges;
};
Relationship
db.challenges.hasMany(db.sessions, {
foreignKey: "challenge_id",
sourceKey: "id"
});
Can I perform below SQL query with sequelize Orm model?
SET #rank=0
SELECT `challenges`.`*`, `sessions`.*, #rank:=#rank+1 AS rank FROM `challenges` JOIN `sessions` ON `sessions`.`challenge_id` = `challenges`.`id` ORDER BY `sessions`.`score` DESC
Sequelize support this type of query with it's ORM Model.