db.Create() for force insert with predefined primary key

README.md

@@ -237,6 +237,12 @@ db.Save(&user)
 //// COMMIT;
 ```
 
+### Create With Predefined Primary key
+
+```go
+db.Create(&User{Id: 999, Name: "user 999"})
+```
+
 ## Query
 
 ```go

callback_create.go

@@ -26,8 +26,15 @@ func Create(scope *Scope) {
 		// set create sql
 		var sqls, columns []string
 
+		primaryKeyPredefined := false
 		for _, field := range scope.Fields() {
-			if field.DBName != scope.PrimaryKey() && len(field.SqlTag) > 0 && !field.IsIgnored {
+			if field.DBName == scope.PrimaryKey() {
+				primaryKeyValue := fmt.Sprintf("%v", field.Value)
+				if primaryKeyValue != "" && primaryKeyValue != "0" {
+					primaryKeyPredefined = true
+				}
+			}
+			if len(field.SqlTag) > 0 && !field.IsIgnored && (field.DBName != scope.PrimaryKey() || primaryKeyPredefined) {
 				columns = append(columns, scope.Quote(field.DBName))
 				sqls = append(sqls, scope.AddToVars(field.Value))
 			}
@@ -65,7 +72,7 @@ func Create(scope *Scope) {
 			}
 		}
 
-		if !scope.HasError() {
+		if !scope.HasError() && !primaryKeyPredefined {
 			scope.SetColumn(scope.PrimaryKey(), id)
 		}
 	}

main.go

@@ -214,6 +214,11 @@ func (s *DB) Save(value interface{}) *DB {
 	}
 }
 
+func (s *DB) Create(value interface{}) *DB {
+	scope := s.clone().NewScope(value)
+	return scope.callCallbacks(s.parent.callback.creates).db
+}
+
 func (s *DB) Delete(value interface{}) *DB {
 	return s.clone().NewScope(value).callCallbacks(s.parent.callback.deletes).db
 }

main_test.go

@@ -2083,3 +2083,17 @@ func TestHstore(t *testing.T) {
 	}
 
 }
+
+func TestCreate(t *testing.T) {
+	if err := db.Create(&UserCompany{Id: 10, UserId: 1, CompanyId: 1}).Error; err != nil {
+		t.Error("Should be able to create record with predefined Id")
+	}
+
+	if db.First(&UserCompany{}, 10).RecordNotFound() {
+		t.Error("Record created with predefined primary key not found")
+	}
+
+	if err := db.Create(&UserCompany{Id: 10, UserId: 10, CompanyId: 10}).Error; err == nil {
+		t.Error("Should not be able to create record with predefined duplicate Id")
+	}
+}