Add model.go file

model.go

@@ -0,0 +1,48 @@
+package gorm
+
+import "reflect"
+
+type Model struct {
+	Data interface{}
+}
+
+func toModel(value interface{}) *Model {
+	var model Model
+	model.Data = value
+	return &model
+}
+
+func (m *Model) ColumnsAndValues() (columns []string, values []interface{}) {
+	typ := reflect.TypeOf(m.Data).Elem()
+
+	for i := 0; i < typ.NumField(); i++ {
+		p := typ.Field(i)
+		if !p.Anonymous {
+			columns = append(columns, toSnake(p.Name))
+			value := reflect.ValueOf(m.Data).Elem().FieldByName(p.Name)
+			values = append(values, value.Interface())
+		}
+	}
+	return
+}
+
+func (m *Model) Columns() (columns []string) {
+	typ := reflect.TypeOf(m.Data).Elem()
+
+	for i := 0; i < typ.NumField(); i++ {
+		p := typ.Field(i)
+		if !p.Anonymous {
+			columns = append(columns, toSnake(p.Name))
+		}
+	}
+
+	return
+}
+
+func (model *Model) MissingColumns() (results []string) {
+	return
+}
+
+func (model *Model) ColumnType(column string) (result string) {
+	return
+}

orm.go

@@ -13,6 +13,7 @@ type Orm struct {
 	Error      error
 	Sql        string
 	SqlVars    []interface{}
+	Model      *Model
 
 	db          *sql.DB
 	whereClause []map[string]interface{}
@@ -24,6 +25,7 @@ type Orm struct {
 }
 
 func (s *Orm) setModel(model interface{}) (err error) {
+	s.Model = toModel(model)
 	s.TableName = interfaceToTableName(model)
 	s.PrimaryKey = "id"
 	return

sql.go

@@ -71,7 +71,7 @@ func (s *Orm) query(out interface{}) {
 }
 
 func (s *Orm) saveSql(value interface{}) {
-	columns, values := modelValues(value)
+	columns, values := s.Model.ColumnsAndValues()
 	s.Sql = fmt.Sprintf(
 		"INSERT INTO \"%v\" (%v) VALUES (%v)",
 		s.TableName,

utils.go

@@ -8,20 +8,6 @@ import (
 	"strings"
 )
 
-func modelValues(m interface{}) (columns []string, values []interface{}) {
-	typ := reflect.TypeOf(m).Elem()
-
-	for i := 0; i < typ.NumField(); i++ {
-		p := typ.Field(i)
-		if !p.Anonymous {
-			columns = append(columns, toSnake(p.Name))
-			value := reflect.ValueOf(m).Elem().FieldByName(p.Name)
-			values = append(values, value.Interface())
-		}
-	}
-	return
-}
-
 func valuesToBinVar(values []interface{}) string {
 	var sqls []string
 	for index, _ := range values {