add gorm backend

model/model.go

@@ -0,0 +1,29 @@
+package model
+
+import (
+	"log"
+
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+type Thing struct {
+	ID        int
+	Name      string
+	Subthings []SubThing
+}
+
+type SubThing struct {
+	ID      int
+	ThingID int
+	Name    string
+}
+
+func InitDB() *gorm.DB {
+	db, err := gorm.Open(sqlite.Open("things.db"))
+	if err != nil {
+		log.Panic(err)
+	}
+	db.AutoMigrate(&Thing{}, &SubThing{})
+	return db
+}