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Update README

This commit is contained in:
Jinzhu 2015-03-11 11:15:23 +08:00
parent 5c38950d9b
commit 7b9272a15e
1 changed files with 7 additions and 3 deletions
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@ -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 users SET name='hello', updated_at = '2013-11-17 21:34:10' WHERE id=111;
// Update multiple attributes if they are changed // 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}) 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; //// 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") db.Model(&user).UpdateColumn("name", "hello")
//// UPDATE users SET name='hello' WHERE id = 111; //// 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}) db.Model(&user).UpdateColumns(User{Name: "hello", Age: 18})
//// UPDATE users SET name='hello', age=18 WHERE id = 111; //// 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}) 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 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}) db.Model(User{}).Updates(User{Name: "hello", Age: 18})
//// UPDATE users SET 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 // Use `RowsAffected` to get the count of affected records
// You could get it with `RowsAffected`
db.Model(User{}).Updates(User{Name: "hello", Age: 18}).RowsAffected db.Model(User{}).Updates(User{Name: "hello", Age: 18}).RowsAffected
``` ```