I'm using sequelize 4.32 and I was trying to write a self-association in one of the tables, I'm not sure if there is something else that I need to do to solve this relation, my goal is to get all the records in my table and include all the records associated with each one
this is the error that I'm getting in the console:
You have used the alias adjucent_stands in two separate associations. Aliased associations must have unique aliases
below you'll find my model:
module.exports = (sequelize, DataTypes) => {
const stands = sequelize.define('stands', {
id: {
type: DataTypes.INTEGER,
unique: true,
allowNull: false,
primaryKey: true,
autoIncrement: true,
},
name: {
type: DataTypes.STRING,
field: 'name',
unique: {
args: true,
msg: 'Name already exists ',
},
},
location: {
type: DataTypes.JSON,
field: 'location',
},
remote: {
type: DataTypes.BOOLEAN,
field: 'remote',
defaultValue: false,
},
created_at: {
type: DataTypes.DATE(3),
defaultValue: sequelize.literal('CURRENT_TIMESTAMP(3)'),
},
updated_at: {
type: DataTypes.DATE(3),
defaultValue: sequelize.literal('CURRENT_TIMESTAMP(3)'),
},
}, { freezeTableName: true, timestamps: true, underscored: true });
stands.associate = (models) => {
stands.hasMany(stands, { as: 'adjucent_stands' });
};
return stands;
};
Related
The problem:
Whenever I fetch a user, I always have to declare/include the association on the query to get its role:
const user = await DB.PORTALDB.models.AccessUser.findOne({
where: { email },
include: [ // EVERY QUERY, I HAVE TO INCLUDE THIS
{
model: DB.PORTALDB.models.AccessUserRoleLup,
as: 'role'
}
]
});
Now there are instance where I forget to include this association so I get a undefined role.
My question is, is there a way where I only set this association once so that I don't have to include this later on my queries?
This the model for my AccessUser table
const AccessUser = <AccessUserStatic>sequelize.define<AccessUserInstance>(
'AccessUser',
{
user_id: {
autoIncrement: true,
type: DataTypes.INTEGER.UNSIGNED,
allowNull: false,
primaryKey: true
},
email: {
type: DataTypes.STRING(255),
allowNull: false
},
firstname: {
type: DataTypes.STRING(255),
allowNull: false
},
lastname: {
type: DataTypes.STRING(255),
allowNull: false
},
password: {
type: DataTypes.STRING(255),
allowNull: false
},
disable: {
type: DataTypes.TINYINT,
allowNull: false,
defaultValue: 0
},
role_id: {
type: DataTypes.SMALLINT,
allowNull: false,
defaultValue: 0
},
created_modified: {
type: DataTypes.DATE,
allowNull: false,
defaultValue: Sequelize.literal('CURRENT_TIMESTAMP')
}
}, {
tableName: 'access_user',
timestamps: false,
indexes: [
{
name: "PRIMARY",
unique: true,
using: "BTREE",
fields: [
{ name: "user_id" },
]
},
]
});
AccessUserRoleLup table
const AccessUserRoleLup = <AccessUserRoleLupStatic>sequelize.define<AccessUserRoleLupInstance>(
'AccessUserRoleLup',
{
role_id: {
autoIncrement: true,
type: DataTypes.INTEGER.UNSIGNED,
allowNull: false,
primaryKey: true
},
role_name: {
type: DataTypes.STRING(50),
allowNull: false
},
role_code: {
type: DataTypes.CHAR(50),
allowNull: false,
defaultValue: ""
}
}, {
tableName: 'access_user_role_lup',
timestamps: false,
indexes: [
{
name: "PRIMARY",
unique: true,
using: "BTREE",
fields: [
{ name: "role_id" },
]
},
]
});
Association:
db.models.AccessUser.hasOne(db.models.AccessUserRoleLup, {
foreignKey: 'role_id',
as: 'role'
});
Use defaultScope for AccessUser. defaultScope is defined in a model definition and it is always applied (unless you removed inline).
const AccessUser = <AccessUserStatic>sequelize.define<AccessUserInstance>(
'AccessUser',
{
user_id: {
autoIncrement: true,
type: DataTypes.INTEGER.UNSIGNED,
allowNull: false,
primaryKey: true
},
...
}, {
tableName: 'access_user',
timestamps: false,
defaultScope: { // Add this
include: [{
model: AccessUserRoleLup,
as: 'role'
}]
},
...
});
With this model definition, all queries will include AccessUserRoleLup.
If you would like to remove for a certain query, use .unscoped().
// These will automatically add eager loading for role
DB.PORTALDB.models.AccessUser.findAll()
DB.PORTALDB.models.AccessUser.findOne()
// These won't fetch role
DB.PORTALDB.models.AccessUser.unscoped().findAll()
DB.PORTALDB.models.AccessUser.unscoped().findOne()
More detail about scope: https://sequelize.org/master/manual/scopes.html
My initial workaround was to create a utility function for querying the user like so:
export const getAccessUser = (where: WhereOptions, include?: IncludeOptions) => {
return new Promise(async (resolve, reject) => {
try {
const user = await DB.PORTALDB.models.AccessUser.findOne({
where: where,
include: [
{
model: DB.PORTALDB.models.AccessUserRoleLup,
as: 'role'
},
...[include]
]
});
resolve(user);
} catch (err) {
reject(err);
}
});
}
I wonder if my question above can be done in much simpler way.
I'm stuck with this problem for quite some time now and I don't know what's wrong with my code I'm trying to associate one table to another but only half of it works any help would be greatly appreciated.
models/companies.js
const DataTypes = require('sequelize');
const sequelize = require('../config/database');
const Users = require('./users');
const Companies = sequelize.define(
'companies',
{
id: {
allowNull: false,
autoIncrement: true,
primaryKey: true,
type: DataTypes.INTEGER
},
name: {
type: DataTypes.STRING(50),
unique: true,
allowNull: false
},
image_url: {
type: DataTypes.STRING(100),
unique: true
},
created_at: {
allowNull: true,
type: DataTypes.DATE,
defaultValue: Date.now()
},
updated_at: {
allowNull: true,
type: DataTypes.DATE,
defaultValue: Date.now()
}
},
{
//Rewrite default behavior of sequelize
timestamps: false,
paranoid: true,
underscored: true
}
);
Companies.hasMany(Users);
Users.belongsTo(Companies);
Companies.sync();
module.exports = Companies;
models/users.js
const DataTypes = require('sequelize');
const sequelize = require('../config/database');
const Users = sequelize.define(
'users',
{
id: {
allowNull: false,
autoIncrement: true,
primaryKey: true,
type: DataTypes.INTEGER
},
name: {
type: DataTypes.STRING(40),
allowNull: false
},
email: {
type: DataTypes.STRING(60),
allowNull: false,
unique: true
},
password: {
type: DataTypes.STRING(60)
},
role: {
type: DataTypes.STRING(40),
allowNull: false
},
image_url: {
type: DataTypes.STRING(100),
unique: true
},
batch: {
type: DataTypes.STRING(3)
},
major: {
type: DataTypes.STRING(10)
},
company_id: {
type: DataTypes.INTEGER,
allowNull: false
},
created_at: {
allowNull: true,
type: DataTypes.DATE,
defaultValue: Date.now()
},
updated_at: {
allowNull: true,
type: DataTypes.DATE,
defaultValue: Date.now()
}
},
{
//Rewrite default behavior of sequelize
timestamps: false,
paranoid: true,
underscored: true
}
);
Users.sync();
module.exports = Users;
Then after I try to run this code below
const Companies = require('./database/models/companies');
const Users = require('./database/models/Users');
//Relation 1: Company and Users
Companies.findAll({ include: [ Users ] }).then((res) => console.log(res));
Users.findAll({ include: [ Companies ] }).then((res) => console.log(res));
it gives me this error:
(node:4893) UnhandledPromiseRejectionWarning: SequelizeEagerLoadingError: companies is not associated to users!
I've tried a couple of solutions online but it didn't help in this case.
BelongsTo means one to one relationship while a company may have multiple users (meaning, calling BelongsTo after hasMany collide!).
For more: https://sequelize.org/master/manual/assocs.html
i am new to sequelize, i have a user table , address table and address type table as given below.
A user can have 2 a different address , permanent and current address, and the type of address (permanent or current ) is specified in the table address type.
I have tried to access the data from mapping table (address_type) in the resolver based on schema and set hasMany relation from user -> address table , but graphql shows association not found error.
How can we get the relation properly in order to get the mapping address type name.
type User{
id:Int
name:String
}
type Address {
id: ID!
user_id:Int
city: String
addr_type:AddressType
}
type AddressType{
id : Int
name:String (permanent|current)
}
table definition
module.exports = function(sequelize, DataTypes) {
return sequelize.define('user', {
id: {
type: DataTypes.INTEGER, allowNull: false, primaryKey: true, autoIncrement: true
},
name: {
type: DataTypes.INTEGER, allowNull: false,
},
}, {
tableName: 'user',
timestamps: false
});
};
module.exports = function(sequelize, DataTypes) {
return sequelize.define('address', {
id: {
type: DataTypes.INTEGER, allowNull: false, primaryKey: true, autoIncrement: true
},
user_id: {
type: DataTypes.INTEGER, allowNull: false, field:"addr_type"
},
addr_type: {
type: DataTypes.INTEGER, allowNull: false, field:"addr_type"
},
city: {
type: DataTypes.STRING, allowNull: false,
},
}, {
tableName: 'address',
timestamps: false
});
};
module.exports = function(sequelize, DataTypes) {
return sequelize.define('address_types', {
id: {
type: DataTypes.INTEGER, allowNull: false, primaryKey: true, autoIncrement: true
},
name: {
type: DataTypes.STRING, allowNull: false,
},
}, {
tableName: 'address_type',
timestamps: false
});
};
relationship
db.user.hasMany(db.address,{foreignKey: 'user_id'});
db.address.belongsTo(db.user,{foreignKey: 'user_id'});
db.address.belongsTo(db.address_types,{foreignKey: 'addr_type'});
resolver code
userts: async (obj, args, context, info ) => User.findAll( {
where: { user_status: 1 },
,
raw: true,
nest: true,
} ).then(userts => {
const response = userts.map(usert => {
return{
// i have 15 fields for a user, if i can access the schema of the corresponsing resolver i can dynamically build the response out put
id: usert.id,
firstName: usert.firstName,
lastName: usert.lastName,
middleName: usert.middleName,
}
})
return response;
}),
You should turn off the option raw in order to get associated objects and use the include option to indicate what associated models you wish to load.
User.findAll( {
where: { user_status: 1 },
include: [{
model: Address,
include: AddressType
}],
raw: false,
nest: true,
}
i have these 2 models:
module.exports = function(sequelize, DataTypes) {
return sequelize.define('services_prices', {
id: {
type: DataTypes.INTEGER(11),
allowNull: false,
primaryKey: true
},
service_id: {
type: DataTypes.INTEGER(11),
allowNull: true,
references: {
model: 'services',
key: 'id'
}
},
created_at: {
type: DataTypes.DATE,
allowNull: false
},
limit: {
type: DataTypes.INTEGER(11),
allowNull: true
},
price: {
type: DataTypes.INTEGER(11),
allowNull: true
}
});
};
which is parent of this model: (services_user_prices can override services_prices )
module.exports = function(sequelize, DataTypes) {
return sequelize.define('services_user_prices', {
id: {
type: DataTypes.INTEGER(11),
allowNull: false,
primaryKey: true,
autoIncrement: true
},
user_id: {
type: DataTypes.INTEGER(11),
allowNull: true
},
created_at: {
type: DataTypes.DATE,
allowNull: false
},
currency: {
type: DataTypes.STRING(255),
allowNull: true
},
is_active: {
type: DataTypes.INTEGER(1),
allowNull: true,
defaultValue: '0'
},
is_trial: {
type: DataTypes.INTEGER(1),
allowNull: true,
defaultValue: '0'
},
start_date: {
type: DataTypes.DATE,
allowNull: false
},
end_date: {
type: DataTypes.DATE,
allowNull: true
},
price: {
type: DataTypes.INTEGER(11),
allowNull: true
},
bundle_price_id: {
type: DataTypes.INTEGER(11),
allowNull: true,
references: {
model: 'services_prices',
key: 'id'
}
}
});
};
when trying to join them i get an error:
EagerLoadingError: services_prices is not associated to services_user_prices!
const result= await db.services_user_prices.findOne({
where: { is_active: 1, user_id: 123 }, include:[{db.services_prices}]
});
in the db services_user_prices has foreign key to services_prices table
what am i doing wrong?
Well if you are using sequelize then you need to update your model because
by default, sequelize will be looking for foreign key starts with model name like
you have defined bundle_price_id as a foreign key for services_prices.
You need to change your column name to services_price_id then it will get fixed.
or if you want to use bundle_price_id you need to define it in your model relation as.
Model.belongsTo(models.ModelName, { foreignKey: 'your_key'} )
Please feel free if you need to ask anything else.
As complement of the above answer you need to add an identifier with as: on the association like this:
Model.belongsTo(models.ModelName, { foreignKey: 'your_key', as:'your_identifier' } )
Then when you do the include on the method you also call the identifier:
await db.services_user_prices.findOne({
where: { is_active: 1, user_id: 123 },
include:[{
model: db.services_prices
as: 'your_identifier'
}]
});
If you don't define the foreignKey field, the as field will set the column name.
I am working on nodeJs, and postgresql.
I am facing with an error
duplicate key value violates unique constraint \"AuthoriseDates_pkey\"
Key (id)=(371) already exists.
I set the column id is autoIncrement: true, don't understand why this happens
the max id of columns is 647 but now I cannot insert a record in this table.
here is migrate code :
module.exports = {
up(queryInterface, Sequelize) {
return queryInterface.createTable('AuthoriseDates', {
id: {
allowNull: false,
autoIncrement: true,
primaryKey: true,
type: Sequelize.INTEGER,
},
userId: {
type: Sequelize.INTEGER,
references: { model: 'Users', key: 'id' },
},
lastAuthorise: {
type: Sequelize.DATE,
},
createdAt: {
allowNull: false,
type: Sequelize.DATE,
defaultValue: Sequelize.fn('NOW'),
},
updatedAt: {
allowNull: false,
type: Sequelize.DATE,
defaultValue: Sequelize.fn('NOW'),
},
});
},
down(queryInterface) {
return queryInterface.dropTable('AuthoriseDates');
},
};
here is models:
module.exports = (sequelize, DataTypes) => {
const authoriseDate = sequelize.define('AuthoriseDate', {
id: { type: DataTypes.INTEGER, primaryKey: true, autoIncrement: true },
userId: DataTypes.INTEGER,
lastAuthorise: DataTypes.DATE,
});
authoriseDate.associate = (models) => {
// associations can be defined here
authoriseDate.belongsTo(models.User, { foreignKey: 'userId', });
};
return authoriseDate;
};
here is code insert:
models.AuthoriseDate.create({
userId: userId,
lastAuthorise: new Date().toISOString(),
}).then((create) => {}).catch((error) => {
loggerServer.err('error ', error);
loggerServer.log('debug', { error: error });
return res.status(500).json(result);
});