I am using Sequelize ORM in Node/Express.

I have two tables, User and Item. Item has a foreign key linked to UserId.

When I try to create an Item with a UserId that is invalid (not present in Users table) a SequelizeForeignKeyConstraintError is thrown and leads to crashing of the application due to unhandled.

The problem I have is this:

Where do I handle the error?

Here is my code.

.post(function(req,res){

        models.Item.create({

            title : req.body.title,

            UserId : req.body.UserId

        }).then(function(item){

            res.json({

                Message : Created item.,

                Item : item

            });

        });

    });