Express and Sequelize: Set foreign key in router post - sql

Question

I am trying to make it so that when a post request to /api/routines is called, a row in the routines table is created and sets the userId foreign key to the current user. Here is my Routine model:
const Routine = db.define('routine', {
name: {
type: Sequelize.STRING,
allowNull: false,
validate: {
notEmpty: true
}
}
})
Here is my associations:
User.hasMany(Routine)
Routine.belongsTo(User)
And here is my router post method:
router.post('/', async (req, res, next) => {
try {
const routine = await Routine.create({
name: req.body.Title
})
const user = await User.findOne({ where: { id: req.body.user } })
await routine.setUser(user) //This is where I need help! This line doesn't work
await user.hasOne(routine)
res.json(routine)
} catch (err) {
next(err)
}
})
I am not sure how to add a foreign key linking the routine to the user. Let me know if you have any ideas. Thanks.

Answer 1

I have an app that, I think, does what you want. First you'll need to keep the ID of who's logged in in your context. To do this, I have the following imports in my src/index.js file:
import models, { sequelize } from './models';
import routes from './routes';
Then, further down in that same file, I have the following code:
app.use(async (req, res, next) => {
req.context = {
models,
me: await models.User.findByLogin(username),
};
next();
});
Where the username variable holds the name of the currently logged in user.
Then, I have an answer end-point where users can post answers, which is similar to your routine end-point. The posting route looks as follows in my case:
router.post('/', async (req, res) => {
const answer = await req.context.models.Answer.create({
text: req.body.text,
userId: req.context.me.id,
});
return res.send(answer);
});
As you can see, I am posting the answer text and the user ID all at once. In your case, I think it would look as follows:
router.post('/', async (req, res, next) => {
try {
const routine = await Routine.create({
name: req.body.Title,
userId: req.context.me.id
});
return res.json(routine);
} catch (err) {
next(err)
}
})
Note that you will have to adjust userId in the code above to whatever field name you are using.