如何使用节点js将对象数组插入mysql？

Question

I am new to node js .I am pretty confused that how to insert array of object in to mysql with nodejs

My Code

static inserPost(postCardArray,postTitle,postedDate,username,coords){
      //postCardArray = [ {hello:'dude'} ]
        let query = "INSERT INTO ??(??,??,??,??,??,??) VALUES (?,?,?,?,?,?)";
        let inserts = ["post","post_by_username","title","post_body","posted_date","views","coords",`${username}`,`${postTitle}`,`${postCardArray}`,`${postedDate}`,0,`${coords}`];
        query = mysql.format(query,inserts);
        pool.getConnection((err,connection) => {
            if(err)
                throw err
            else
                connection.query(query,(err,rows) => {
                    connection.release();
                    console.log(rows)
                })
        })

    }

But Above Code inserts the data like this [Object] I don't know how to insert .

Answer 1

In your example, you are using new ES6 string templateing which internally will call toString method on your object, so you should check your variable values of this part of code

`${username}`,`${postTitle}`,`${postCardArray}`,`${postedDate}`,0,`${coords}`

Basically toString method of plain object will return string "[object Object"] instead of key value pairs. Also you can look at JSON.stringify method, which will create JSON string of your object

I would suggest you to use ORM instead to build valid queries, such as Sequelize , Bookshelf with Knex or node-orm2 .