From 7b9272a15eb2af8424932d94f58f27e66c0c071b Mon Sep 17 00:00:00 2001 From: Jinzhu Date: Wed, 11 Mar 2015 11:15:23 +0800 Subject: [PATCH] Update README --- README.md | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/README.md b/README.md index 8d995853..7085ef46 100644 --- a/README.md +++ b/README.md @@ -350,6 +350,9 @@ db.First(&user, 111).Update("name", "hello") //// UPDATE users SET name='hello', updated_at = '2013-11-17 21:34:10' WHERE id=111; // Update multiple attributes if they are changed +db.Model(&user).Updates(map[string]interface{}{"name": "hello", "age": 18, "actived": false}) + +// Update multiple attributes if they are changed (update with struct only works with none zero values) db.Model(&user).Updates(User{Name: "hello", Age: 18}) //// UPDATE users SET name='hello', age=18, updated_at = '2013-11-17 21:34:10' WHERE id = 111; ``` @@ -362,6 +365,7 @@ By default, update will call BeforeUpdate, AfterUpdate callbacks, if you want to db.Model(&user).UpdateColumn("name", "hello") //// UPDATE users SET name='hello' WHERE id = 111; +// Update with struct only works with none zero values, or use map[string]interface{} db.Model(&user).UpdateColumns(User{Name: "hello", Age: 18}) //// UPDATE users SET name='hello', age=18 WHERE id = 111; ``` @@ -372,13 +376,13 @@ db.Model(&user).UpdateColumns(User{Name: "hello", Age: 18}) db.Table("users").Where("id = ?", 10).Updates(map[string]interface{}{"name": "hello", "age": 18}) //// UPDATE users SET name='hello', age=18 WHERE id = 10; +// Update with struct only works with none zero values, or use map[string]interface{} db.Model(User{}).Updates(User{Name: "hello", Age: 18}) //// UPDATE users SET name='hello', age=18; -// Callbacks won't be run when do batch updates +// Callbacks won't run when do batch updates -// You may would like to know how many records updated when do batch updates -// You could get it with `RowsAffected` +// Use `RowsAffected` to get the count of affected records db.Model(User{}).Updates(User{Name: "hello", Age: 18}).RowsAffected ```