How to add sequlize.js transactions in a async function

Question

So far I didn't add transactions to my project. Now I'm consider my self to upgrade to that level.

If I need to update master table, details table and the logs table I would do something like this.

export async function create(req,res,next){
    try{

    const add_to_master_table = await db.Inovice_master.create();

    const add_to_detail_table = await db.Invoice_detail.create();

    const add_to_user_logs = await db.User_logs.create();

    res.sendStatus(200);

    }catch(error){
        res.sendStatus(500);
    }
}

In sequlize documentation transaction is something like this

 return sequelize.transaction(function (t) { // chain all your queries here. make sure you return them. return User.create({ firstName: 'Abraham', lastName: 'Lincoln' }, {transaction: t}).then(function (user) { return user.setShooter({ firstName: 'John', lastName: 'Boothe' }, {transaction: t}); }); }).then(function (result) { // Transaction has been committed // result is whatever the result of the promise chain returned to the transaction callback }).catch(function (err) { // Transaction has been rolled back // err is whatever rejected the promise chain returned to the transaction callback }); 

So my question is how do I embed transactions to my code with out leaving the async / await fashion.

Anyhelp!

Answer 1

You can write down it in this way.

return sequelize.transaction(async (t) =>  {

  let user = await User.create({firstName: 'Abraham', lastName: 'Lincoln'}, { transaction: t })
  user = await user.setShooter({ firstName: 'John', lastName: 'Boothe'}, { transaction: t });
  return user
})

I prefer to user CLS mechanism for Transaction passing you also don't have to pass transactions to each query.

Automatically pass transactions to all queries