Update example

example_many2many_test.go

@@ -27,31 +27,6 @@ type OrderToItem struct {
 	ItemId  int
 }
 
-func createManyToManyTables(db *pg.DB) error {
-	models := []interface{}{
-		(*Order)(nil),
-		(*Item)(nil),
-		(*OrderToItem)(nil),
-	}
-	for _, model := range models {
-		err := db.Model(model).CreateTable(&orm.CreateTableOptions{
-			Temp: true,
-		})
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// go-pg default convention is that:
-//   - Primary key is called Id, e.g. Model1.Id and Model2.Id.
-//   - Many to many table has columns Model1Id and Model2Id.
-//
-// If you are not using that convention you have 2 options:
-//   1. Use orm.RegisterTable to register m2m table so go-pg has a chance
-//      to adopt to your convention.
-//   2. Use `pg:fk:model2_id,joinFK:model1_id` to specify columns.
 func ExampleDB_Model_manyToMany() {
 	db := connect()
 	defer db.Close()
@@ -113,3 +88,20 @@ func ExampleDB_Model_manyToMany() {
 	// Output: Order 1 Items 1 2
 	// Order 1 Items 2 1
 }
+
+func createManyToManyTables(db *pg.DB) error {
+	models := []interface{}{
+		(*Order)(nil),
+		(*Item)(nil),
+		(*OrderToItem)(nil),
+	}
+	for _, model := range models {
+		err := db.Model(model).CreateTable(&orm.CreateTableOptions{
+			Temp: true,
+		})
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}