graph_ql_003.test_db_write.ts

export const databaseInitializer = async () => {

    return await createConnection({
        type     : 'postgres',
        host     : '0.0.0.0',
        port     : 5432,
        username : 'db_user',
        password : 'db_password',
        database : 'db_name',
        entities: [
            Card,
        ],
        synchronize: true,
    }).then((connection) => {
        console.log('Database connection established');
        
        // Create new instance
        const card = new Card();
        card.title = 'First card';
        card.done  = false;
        
        // Persist to database
        return connection.manager
            .save(card)
            .then(card => {
                console.log('card saved');
            })
    });

};