SQLite SequelizeJs adding an extra filed in query - node.js

Question

I am using sequelize and SQLite3. When I use the model in my code then it is generating wrong query. Can any one help me to fix this issue
This is my model defiantion
module.exports = function(sequelize, DataTypes) {
let product = sequelize.define('product', {
id: {
type: DataTypes.INTEGER(10).UNSIGNED,
primaryKey: true,
autoIncrement: true
},
name: {
type: DataTypes.STRING(200),
},
code: {
type: DataTypes.STRING(100),
},
desc: {
type: "BLOB",
},
productCategoryId: {
type: DataTypes.INTEGER(10).UNSIGNED,
references: {
model: 'product_category',
key: 'id'
}
},
costPrice: {
type: DataTypes.FLOAT,
},
sellPrice: {
type: DataTypes.FLOAT,
},
markup: {
type: DataTypes.FLOAT,
},
markupType: {
type: DataTypes.ENUM('AMOUNT','PERCENTAGE'),
},
imgAttachment: {
type: DataTypes.INTEGER(1),
},
minOrderQuantity: {
type: DataTypes.INTEGER(10),
},
minStockQuantity: {
type: DataTypes.INTEGER(10),
},
isComposite: {
type: DataTypes.INTEGER(1),
},
isAllowedOutOfStockSale: {
type: DataTypes.INTEGER(1),
defaultValue: '0'
},
isActive: {
type: DataTypes.INTEGER(1),
defaultValue: '0'
},
isDeceptive: {
type: DataTypes.INTEGER(1),
defaultValue: '0'
},
createdAt: {
type: DataTypes.DATE,
},
createdBy: {
type: DataTypes.INTEGER(10).UNSIGNED,
references: {
model: 'user',
key: 'id'
}
},
deletedAt: {
type: DataTypes.DATE,
},
deletedBy: {
type: DataTypes.INTEGER(10).UNSIGNED,
references: {
model: 'user',
key: 'id'
}
},
updatedAt: {
type: DataTypes.DATE,
},
updatedBy: {
type: DataTypes.INTEGER(10).UNSIGNED,
references: {
model: 'user',
key: 'id'
}
}
}, {
tableName: 'product',
timestamps: false,
defaultScope: {
where: {
isActive: true,
deletedAt: null,
}
}
});
// Association
product.associate = function(models) {
models.product.belongsTo(models.user);
models.product.belongsTo(models.user);
models.product.belongsTo(models.user);
models.product.belongsTo(models.product_category);
models.product.hasMany(models.product_composition);
};
return product;
}
This is my model implementation
models.findAll({})
.then(data => {
console.log(data)
.catch(err => {
console.log(err)
});
I am getting SequelizeDatabaseError. After investigation I trace out the generated query
SELECT `id`, `name`, `code`, `desc`, `productCategoryId`, `costPrice`, `sellPrice`, `markup`, `markupType`, `imgAttachment`, `minOrderQuantity`, `minStockQuantity`, `isComposite`, `isAllowedOutOfStockSale`, `isActive`, `isDeceptive`, `createdAt`, `createdBy`, `deletedAt`, `deletedBy`, `updatedAt`, `updatedBy`, `userId` FROM `product` AS `product` WHERE `product`.`id` = 1 AND `product`.`isActive` = 1 AND `product`.`deletedAt` IS NULL;
Why it is adding userId in query. This query works fine when I remove userId field from this generated query

Answer 1

That is because of this line :
This line will add a userId attribute to product to hold the primary key value for Product
models.product.belongsTo(models.user);
But This will not add the field , reason is , naming convention is followed for foreign key name productCategoryId but not in above case ,
models.product.belongsTo(models.product_category);
for that you should define that explicitly and you should also add alias name for association coz you are using one table for 3 relations , like
models.product.belongsTo(models.user , { as : 'delete_by' ,foreignKey: 'deletedBy'} );
models.product.belongsTo(models.user , { as : 'created_by' ,foreignKey: 'createdBy'} );
models.product.belongsTo(models.user , { as : 'updated_by' , foreignKey: 'updatedBy'} );
For more detail : DO READ