inserting multiple dependent tables at once in sqlite3 using node.js - node.js

Question

I get data from a HTML form, I would like to save this data into two dependent tables.
At the moment I came up with the following node.js code:
...
db.serialize(function() {
var lastID;
db.run('INSERT INTO Idea(title,description) VALUES(?1,?2)', {
1: formData.nameText,
2: formData.ideaText
}, function(err){
if (err) {
return console.log(err.message);
}
// get the last insert id
console.log(`A row has been inserted into Idea with rowid ${this.lastID}`);
lastID = this.lastID;
console.log(`last inner ID ` + lastID);
});
db.run('INSERT INTO Places(lon,lat,IdeaID) VALUES(?1,?2,?3)', {
1: formData.lon,
2: formData.lat,
3: lastID
}, function(err){
if (err) {
return console.log(err.message);
}
// get the last insert id
console.log(`A row has been inserted with rowid ${this.lastID}`);
console.log(`IdeaID in db ` + lastID);
});
db.close();
})
The console output looks good, the database data however isn't.
The console shows:
A row has been inserted into Idea with rowid 75
last inner ID 75
A row has been inserted with rowid 16
IdeaID in db 75
Inside the database the lastID stays null.
Am I missing something? Is this the wrong way to go about it?

Answer 1

I solved this issue (with a phone call to my brother). Here is my solution:
db.serialize(function () {
var lastID;
db.run('INSERT INTO Idea(title,description) VALUES(?1,?2)', {
1: formData.nameText,
2: formData.ideaText
}, function (err) {
if (err) {
return console.log(err.message);
}
// get the last insert id
console.log(`A row has been inserted into Idea with rowid ${this.lastID}`);
db.run('INSERT INTO Places(lon,lat,IdeaID) VALUES(?1,?2,?3)', {
1: formData.lon,
2: formData.lat,
3: this.lastID
}, function (err) {
if (err) {
return console.log(err.message);
}
// get the last insert id
console.log(`A row has been inserted with rowid ${this.lastID}`);
});
db.close();
});
})
This works because the callback (last part of the first db.run call) is executed after the first part.
One important bit is to move the db.close(); inside the callback, otherwise the connection to the database will be closed before the part inside the callback is executed.