Create/Save ignoreDuplicates Option

bulkCreate got an ignoreDuplicates option based on this issue.

I can see there is no ignoreDuplicates option for create or save but is there a way to INSERT IGNORE when inserting one row?

Use Case:

I am in the process of refactoring Community Casts to use sequelize.

I want to port this line of code:

return connection.queryAsync('INSERT IGNORE INTO tags VALUES ?', values);

Here is a an example:

var Tag = sequelize.define('Tag', {
  name: {
    type: Sequelize.STRING,
    primaryKey: true
  }
});

sequelize.sync({ force: true }).then(function () {
  Tag.create({
    name: 'Hello'
  }).then(function () {
    // boom!
    Tag.create({
      name: 'Hello'
    });
  });
});

And the exception:

Executing (default): INSERT INTO `Tags` (`name`,`updatedAt`,`createdAt`) VALUES ('Hello','2015-09-15 08:51:44','2015-09-15 08:51:44');
Unhandled rejection SequelizeUniqueConstraintError: Validation error
    at Query.formatError (c:\Users\alexb\Documents\Code\demo\node_modules\sequelize\lib\dialects\mysql\query.js:134:14)
    at Query._callback (c:\Users\alexb\Documents\Code\demo\node_modules\sequelize\lib\dialects\mysql\query.js:35:21)
    at Query.Sequence.end (c:\Users\alexb\Documents\Code\demo\node_modules\mysql\lib\protocol\sequences\Sequence.js:96:24)
    at Query.ErrorPacket (c:\Users\alexb\Documents\Code\demo\node_modules\mysql\lib\protocol\sequences\Query.js:94:8)
    at Protocol._parsePacket (c:\Users\alexb\Documents\Code\demo\node_modules\mysql\lib\protocol\Protocol.js:274:23)
    at Parser.write (c:\Users\alexb\Documents\Code\demo\node_modules\mysql\lib\protocol\Parser.js:77:12)
    at Protocol.write (c:\Users\alexb\Documents\Code\demo\node_modules\mysql\lib\protocol\Protocol.js:39:16)
    at Socket.<anonymous> (c:\Users\alexb\Documents\Code\demo\node_modules\mysql\lib\Connection.js:96:28)
    at Socket.emit (events.js:107:17)
    at readableAddChunk (_stream_readable.js:163:16)
    at Socket.Readable.push (_stream_readable.js:126:10)
    at TCP.onread (net.js:538:20)

Ideally I would be able to use the nested syntax:

Screencast.create({
  id: '123',
  title: 'Sequelize video.',
  Tags: [{ name:'Sequelize' }, { name:'Node' }]
}, {
  include: [Tag]
}

[mickhansen]

@alexbooker should be possible, you could then just ignore a unique constraint error with .catch(Sequelize.UniqueConstraintError, noop)

[adams-family]

+1

I would be very happy to see the ignoreDuplicates option for a single create if anyone finds a solution.