I am writing rest using node, sequelize as ORM for mySQL. I am using bulkCreate function to create record in bulk. But in response it is returning null for primary key value.
Model
sequelize.define('category', { cat_id:{ type:DataTypes.INTEGER, field:'cat_id', primaryKey: true, autoIncrement: true, unique:true }, cat_name:{ type: DataTypes.STRING, field: 'cat_name', defaultValue:null } });
Bulk Create operation :
var data = [ { 'cat_name':'fashion' }, { 'cat_name':'food' } ]; orm.models.category.bulkCreate(data) .then(function(response){ res.json(response); }) .catch(function(error){ res.json(error); })
response :
[ { "cat_id": null, "cat_name": "fashion", "created_at": "2016-01-29T07:39:50.000Z", "updated_at": "2016-01-29T07:39:50.000Z" }, { "cat_id": null, "cat_name": "food", "created_at": "2016-01-29T07:39:50.000Z", "updated_at": "2016-01-29T07:39:50.000Z" } ]
Tested in MySQL:
Model.bulkCreate(values, { individualHooks: true })
You should set the returning option:
Model.bulkCreate(values, {returning: true})
var data = [ { 'cat_name':'fashion' }, { 'cat_name':'food' } ]; Model.bulkCreate(data) .then(function() { //(if you try to immediately return the Model after bulkCreate, the ids may all show up as 'null') return Model.findAll() }) .then(function(response){ res.json(response); }) .catch(function(error){ res.json(error); })
The success handler is passed an array of instances, but please notice that these may not completely represent the state of the rows in the DB. This is because MySQL and SQLite do not make it easy to obtain back automatically generated IDs and other default values in a way that can be mapped to multiple records. To obtain Instances for the newly created values, you will need to query for them again. http://docs.sequelizejs.com/en/latest/api/model/#bulkcreaterecords-options-promisearrayinstance
Unfortunately that doesn't work in the latest version. They explain why here: http://sequelize.readthedocs.org/en/latest/api/model/#bulkcreaterecords-options-promisearrayinstance
note that the description specifically mentions mysql. You'll have to query for them. (example includes var _ = require('lodash');
var cat = rm.models.category; cat.bulkCreate(data) .then(function (instances) { var names = _.map(instances, function (inst) { return inst.cat_name; }); return cat.findAll({where: {cat_name: {$in: names}}); }) .then(function(response){ res.json(response); }) .catch(function(error){ res.json(error); });
From the documentation: please notice that these may not completely represent the state of the rows in the DB. This is because MySQL and SQLite do not make it easy to obtain back automatically generated IDs and other default values in a way that can be mapped to multiple records. To obtain Instances for the newly created values, you will need to query for them again. http://docs.sequelizejs.com/class/lib/model.js~Model.html#static-method-bulkCreate
But you can pass an option to make it return the id
orm.models.category.bulkCreate(data, { returning: true })
