Sequelize [object SequelizeModel] save is not a function

Question

I'm using Sequelize with Node and I have an instance of a model called athlete. I'm trying to insert it into my database using the save() function but it is returning this:

TypeError: athlete.save is not a function

Here is my code snippet :

console.log("Athlete: " + athlete);
athlete.save().then(function() {
    console.log("Inserted Athlete");
    callback(null, athlete);
}).catch(function (err) {
    console.log("Inserted athlete with error: " + err);
    callback(err, null);
});

The log prints this:

Athlete: [object SequelizeModel]

athlete is created from a class method in a Sequelize model definition file.

Answer 1

原来SequelizeModel不是正确的对象类型。它必须是SequelizeInstance类型的对象才能使用save（）函数保存。

Answer 2

在保存之前尝试构建实例：

    const athlete = Athlete.build(req.body,
        {
        fields: ['athlete']
        })
    .save()
    .then( // . //)
    .catch(err => {res.json(err)})