Adding multiple entries/rows with knex mysql-CodePudding

I get the following data from the req.body:

{
    "user_id": "1",
    "user_name": "jkalandarov",
    "email": "[email protected]",
    "courses": [
        {
            "course_id": 1,
            "course_name": "English",
            "course_price": 265
        },
        {
            "course_id": 2,
            "course_name": "Node.js",
            "course_price": 200
        },
        {
            "course_id": 3,
            "course_name": "Backend Developement",
            "course_price": 300
        }        
    ]
}

I want to insert this data into three rows with the help of knex into mysql database table like this with a single query:

Any ideas?

Thanks in advance!

CodePudding user response：

Assuming you already have your knex connection set up, it should simply allow you to pass an array of objects into the insert function to insert multiple rows with a single statement. https://knexjs.org/#Builder-insert

Step 1: Build an array of objects

const objectsToInsert = req.body.courses.map(course => {
    return {
        user_id: req.body.user_id,
        user_name: req.body.user_name,
        email: req.body.email,
        ...course
    }
});

Step 2: Insert them using your knex connection

await knex('your_table_name').insert(objectsToInsert);

This should insert those three rows into your table in a single query.

As this data is coming directly from the request body it is obviously also a good idea to add some validation here but that feels out of scope for your original question.