Nativescript SQLite null values after execSQL queries - sqlite

Question

i have the following problem. I designed my litesql database over 'DB Browser for SQLite' and I'm stuck as soon as a query gets executed. The functions I am exporting are getting imported and used in nativescript-vue.
Webpack also copies the database with *.sqlite ending to the device. The android version I use is 9.
The way I initialize my db is;
var Sqlite = require("nativescript-sqlite");
var db;
export function init() {
if (!Sqlite.exists("test.sqlite")) {
Sqlite.copyDatabase("test.sqlite");
}
new Sqlite("test.sqlite", function(err, dbConnection) {
if (err) {
console.log(err);
return;
}
db = dbConnection;
console.log("connection successful")
});
}
After running the function console shows 'connection successful'. The database is placed in the root of the app folder. That way it should pull the database?
Besides I got another question. How could I hide the database in the production?
So the way I execute the query is:
export function xxxx(**parameter**) {
db.execSQL(
"select random_id from random_table where some_id = ?",
**parameter**,
function(err, result) {
console.log("result 1: " + result + " err: " + err);
}
);
}
The output is:
JS: 'result 1: null err: null'
I'm not even sure if it opens the database in the right way?

Answer 1

If you just want to export DB file from Android / iOS, you may use nativescript-share-file plugin and pass the right path.
Android
const filePath = application.android.context
.getDatabasePath("your-db-name.sqlite")
.getAbsolutePath();
new ShareFile().open({
path: filePath,
});
For iOS the path will be different,
iOS
const filePath = knownFolders.documents().getFile("your-db-name.sqlite").path;
new ShareFile().open({
path: filePath,
});