ORM fixes

examples/database/pg/customer.v

@@ -1,5 +1,3 @@
-/*
-
 module main
 
 import pg
@@ -12,52 +10,52 @@ struct Customer {
 }
 
 fn main() {
-	db := pg.connect(pg.Config{host: '127.0.0.1' user: 'myuser' dbname: 'mydb'})
-	
+	db := pg.connect(pg.Config{
+		host: 'localhost' //'127.0.0.1'
+		user: 'postgres'
+		dbname: 'customerdb'
+	}) or {
+		println('failed to connect')
+		println(err)
+		return
+	}
+
 	nr_customers := db.select count from Customer
 	println('Total customers: $nr_customers')
-	
+
 	// V syntax can be used to build queries
-	println('------------------------------------------------------------------------')
+	println('----------------------------------------------------------------')
 	bg_customers := db.select from Customer where country == 'Bulgaria' && id != 2
 	for customer in bg_customers {
 		println('$customer.country | $customer.id - $customer.name')
 	}
-	
-	println('------------------------------------------------------------------------')
+
+	println('----------------------------------------------------------------')
 	ru_customers := db.select from Customer where country == 'Russia'
 	for customer in ru_customers {
 		println('$customer.country | $customer.id - $customer.name')
 	}
-	
+
 	// by adding `limit 1` we tell V that there will be only one object
-	println('------------------------------------------------------------------------')	
-	existing := db.select from Customer where id == 1 limit 1 or { panic(err) }	
+	println('----------------------------------------------------------------')
+	existing := db.select from Customer where id == 1 limit 1 or { panic(err) }
 	println('Existing customer name: $existing.name')
 	println('Existing customer full information:')
 	println(existing)
-	
+
 	println('------------------------------------------------------------------------')
-  q := Customer{}
-	for {
-		anon := db.select from Customer where id == 12345 && name == q.name && nr_orders > q.nr_orders limit 1 or { eprintln('No such customer. Error: $err') break }
+	q := Customer{}
+	// It's easy to handle queries that don't return any data
+	if anon := db.select from Customer where id == 12345 && name == q.name &&
+			nr_orders > q.nr_orders limit 1 {
 		println('Non existing customer name: $anon.name')
-		break
 	}
-	
-	// TODO: insert a new customer
-	/*
+	// Insert a new customer
 	nc := Customer{
 		name: 'John Doe'
 		nr_orders: 10
 	}
 	db.insert(nc)
-  */
-
 }
 
-*/
 
-fn main() {
-	
-}