make callback create works

callback_create.go

@@ -1,15 +1,40 @@
 package gorm
 
+import (
+	"fmt"
+	"strings"
+	"time"
+)
+
 func BeforeCreate(scope *Scope) {
 	scope.CallMethod("BeforeSave")
 	scope.CallMethod("BeforeCreate")
 }
 
-func SaveBeforeAssociations(scope *Scope) {
-}
-
 func Create(scope *Scope) {
+	defer scope.Trace(time.Now())
+
 	if !scope.HasError() {
+		// set create sql
+		var sqls, columns []string
+
+		for _, field := range scope.Fields() {
+			if field.IsBlank || len(field.SqlTag) == 0 {
+				continue
+			}
+			columns = append(columns, scope.quote(field.DBName))
+			sqls = append(sqls, scope.AddToVars(field.Value))
+		}
+
+		scope.Raw(fmt.Sprintf(
+			"INSERT INTO %v (%v) VALUES (%v) %v",
+			scope.TableName(),
+			strings.Join(columns, ","),
+			strings.Join(sqls, ","),
+			scope.Dialect().ReturningStr(scope.PrimaryKey()),
+		))
+
+		// execute create sql
 		var id interface{}
 		if scope.Dialect().SupportLastInsertId() {
 			if sql_result, err := scope.DB().Exec(scope.Sql, scope.SqlVars...); scope.Err(err) == nil {
@@ -20,8 +45,10 @@ func Create(scope *Scope) {
 			scope.Err(scope.DB().QueryRow(scope.Sql, scope.SqlVars...).Scan(&id))
 		}
 
+		if !scope.HasError() {
 			scope.SetColumn(scope.PrimaryKey(), id)
 		}
+	}
 }
 
 func AfterCreate(scope *Scope) {
@@ -29,13 +56,12 @@ func AfterCreate(scope *Scope) {
 	scope.CallMethod("AfterSave")
 }
 
-func SaveAfterAssociations(scope *Scope) {
-}
-
 func init() {
+	DefaultCallback.Create().Register("begin_transaction", BeginTransaction)
 	DefaultCallback.Create().Register("before_create", BeforeCreate)
 	DefaultCallback.Create().Register("save_before_associations", SaveBeforeAssociations)
 	DefaultCallback.Create().Register("create", Create)
 	DefaultCallback.Create().Register("save_after_associations", SaveAfterAssociations)
 	DefaultCallback.Create().Register("after_create", AfterCreate)
+	DefaultCallback.Create().Register("commit_or_rollback_transaction", CommitOrRollbackTransaction)
 }

callback_delete.go

@@ -12,10 +12,7 @@ func BeforeDelete(scope *Scope) {
 func Delete(scope *Scope) {
 	defer scope.Trace(time.Now())
 
-	if scope.HasError() {
+	if !scope.HasError() {
-		return
-	}
-
 		if !scope.Search.unscope && scope.HasColumn("DeletedAt") {
 			scope.Raw(
 				fmt.Sprintf("UPDATE %v SET deleted_at=%v %v",
@@ -28,6 +25,7 @@ func Delete(scope *Scope) {
 		}
 
 		scope.Exec()
+	}
 }
 
 func AfterDelete(scope *Scope) {

callback_shared.go

@@ -7,3 +7,9 @@ func BeginTransaction(scope *Scope) {
 func CommitOrRollbackTransaction(scope *Scope) {
 	scope.CommitOrRollback()
 }
+
+func SaveBeforeAssociations(scope *Scope) {
+}
+
+func SaveAfterAssociations(scope *Scope) {
+}

do.go

@@ -311,21 +311,6 @@ func (s *Do) update() *Do {
 	return s
 }
 
-func (s *Do) delete() *Do {
-	s.model.callMethod("BeforeDelete")
-
-	if !s.db.hasError() {
-		if !s.search.unscope && s.model.hasColumn("DeletedAt") {
-			s.setSql(fmt.Sprintf("UPDATE %v SET deleted_at=%v %v", s.table(), s.addToVars(time.Now()), s.combinedSql()))
-		} else {
-			s.setSql(fmt.Sprintf("DELETE FROM %v %v", s.table(), s.combinedSql()))
-		}
-		s.exec()
-		s.model.callMethod("AfterDelete")
-	}
-	return s
-}
-
 func (s *Do) prepareQuerySql() {
 	if s.search.raw {
 		s.setSql(strings.TrimLeft(s.combinedSql(), "WHERE "))

field.go

@@ -10,9 +10,17 @@ import (
 
 type Field struct {
 	Name          string
+	DBName        string
 	Value         interface{}
-	model             *Model
+	IsBlank       bool
+	IsIgnored     bool
+	Tag           string
+	AddationalTag string
+	Size          int
+	SqlTag        string
+
 	dbName            string
+	model             *Model
 	isBlank           bool
 	ignoreField       bool
 	isPrimaryKey      bool
@@ -25,6 +33,16 @@ type Field struct {
 	structField       reflect.StructField
 }
 
+func (f *Field) IsScanner() bool {
+	_, is_scanner := reflect.New(reflect.ValueOf(f.Value).Type()).Interface().(sql.Scanner)
+	return is_scanner
+}
+
+func (f *Field) IsTime() bool {
+	_, is_time := f.Value.(time.Time)
+	return is_time
+}
+
 func (f *Field) parseBlank() {
 	f.isBlank = isBlank(f.reflectValue)
 }
@@ -38,7 +56,7 @@ func (f *Field) parseIgnore() {
 }
 
 func (f *Field) isScanner() bool {
-	_, is_scanner := reflect.New(f.reflectValue.Type()).Interface().(sql.Scanner)
+	_, is_scanner := reflect.New(reflect.ValueOf(f.Value).Type()).Interface().(sql.Scanner)
 	return is_scanner
 }
 

main.go

@@ -178,7 +178,12 @@ func (s *DB) UpdateColumns(values interface{}, ignore_protected_attrs ...bool) *
 }
 
 func (s *DB) Save(value interface{}) *DB {
+	scope := s.clone().newScope(value)
+	if scope.PrimaryKeyZero() {
+		return scope.callCallbacks(s.parent.callback.creates).db
+	} else {
 		return s.clone().do(value).begin().save().commit_or_rollback().db
+	}
 }
 
 func (s *DB) Delete(value interface{}) *DB {

scope.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"github.com/jinzhu/gorm/dialect"
+	"go/ast"
 	"strings"
 	"time"
 
@@ -149,8 +150,77 @@ func (s *Scope) CombinedConditionSql() string {
 	return s.joinsSql() + s.whereSql() + s.groupSql() + s.havingSql() + s.orderSql() + s.limitSql() + s.offsetSql()
 }
 
+func (scope *Scope) SqlTagForField(field *Field) (tag string) {
+	value := field.Value
+	reflect_value := reflect.ValueOf(value)
+
+	if field.IsScanner() {
+		value = reflect_value.Field(0).Interface()
+	}
+
+	switch reflect_value.Kind() {
+	case reflect.Slice:
+		if _, ok := value.([]byte); !ok {
+			return
+		}
+	case reflect.Struct:
+		if !field.IsTime() && !field.IsScanner() {
+			return
+		}
+	}
+
+	if tag = field.Tag; len(tag) == 0 && tag != "-" {
+		if field.isPrimaryKey {
+			tag = scope.Dialect().PrimaryKeyTag(value, field.Size)
+		} else {
+			tag = scope.Dialect().SqlTag(value, field.Size)
+		}
+
+		if len(field.AddationalTag) > 0 {
+			tag = tag + " " + field.AddationalTag
+		}
+	}
+	return
+}
+
 func (scope *Scope) Fields() []*Field {
-	return []*Field{}
+	indirect_value := reflect.Indirect(reflect.ValueOf(scope.Value))
+	fields := []*Field{}
+
+	if !indirect_value.IsValid() {
+		return fields
+	}
+
+	typ := indirect_value.Type()
+	for i := 0; i < typ.NumField(); i++ {
+		field_struct := typ.Field(i)
+		if field_struct.Anonymous || !ast.IsExported(field_struct.Name) {
+			continue
+		}
+
+		var field Field
+		field.Name = field_struct.Name
+		field.DBName = toSnake(field_struct.Name)
+
+		value := indirect_value.FieldByName(field_struct.Name)
+		field.Value = value.Interface()
+		field.IsBlank = isBlank(value)
+
+		tag, addational_tag, size := parseSqlTag(field_struct.Tag.Get(scope.db.parent.tagIdentifier))
+		field.Tag = tag
+		field.AddationalTag = addational_tag
+		field.Size = size
+		field.SqlTag = scope.SqlTagForField(&field)
+
+		if tag == "-" {
+			field.IsIgnored = true
+		}
+
+		field.parseAssociation()
+		fields = append(fields, &field)
+	}
+
+	return fields
 }
 
 func (scope *Scope) Raw(sql string) {