Initial add backend stuff

dbutil/registry.go

@@ -0,0 +1,25 @@
+package dbutil
+
+import "reflect"
+
+// tableRegistry maps a model struct type to its database table name. The query
+// builder (T[M]) resolves table names through it, so the framework never has to
+// import the application's models package. Apps populate it once at startup via
+// Register / RegisterAll — typically from an init() in their models package:
+//
+//	func init() { dbutil.RegisterAll(Tables) }
+var tableRegistry = map[reflect.Type]string{}
+
+// Register maps a single model type to a table name.
+func Register(t reflect.Type, name string) { tableRegistry[t] = name }
+
+// RegisterAll merges a whole type->table map (e.g. an app's models.Tables) into
+// the registry.
+func RegisterAll(m map[reflect.Type]string) {
+	for k, v := range m {
+		tableRegistry[k] = v
+	}
+}
+
+// tableNameFor returns the registered table name for t, or "" if none is set.
+func tableNameFor(t reflect.Type) string { return tableRegistry[t] }