Skip to content
体验新版
项目
组织
正在加载...
登录
切换导航
打开侧边栏
李少辉-开发者
gitlab-foss
提交
8033afd8
G
gitlab-foss
项目概览
李少辉-开发者
/
gitlab-foss
通知
15
Star
0
Fork
0
代码
文件
提交
分支
Tags
贡献者
分支图
Diff
Issue
0
列表
看板
标记
里程碑
合并请求
0
Wiki
0
Wiki
分析
仓库
DevOps
项目成员
Pages
G
gitlab-foss
项目概览
项目概览
详情
发布
仓库
仓库
文件
提交
分支
标签
贡献者
分支图
比较
Issue
0
Issue
0
列表
看板
标记
里程碑
合并请求
0
合并请求
0
Pages
分析
分析
仓库分析
DevOps
Wiki
0
Wiki
成员
成员
收起侧边栏
关闭侧边栏
动态
分支图
创建新Issue
提交
Issue看板
前往新版Gitcode,体验更适合开发者的 AI 搜索 >>
提交
8033afd8
编写于
6月 15, 2016
作者:
D
Drew Blessing
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
Update migration_style_guide.md with new details
上级
1a832c8f
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
14 addition
and
2 deletion
+14
-2
doc/development/migration_style_guide.md
doc/development/migration_style_guide.md
+14
-2
未找到文件。
doc/development/migration_style_guide.md
浏览文件 @
8033afd8
...
...
@@ -34,6 +34,15 @@ First, you need to provide information on whether the migration can be applied:
3.
online with errors on new instances while migrating
4.
offline (needs to happen without app servers to prevent db corruption)
For example:
```
# rubocop:disable all
# Migration type: online without errors (works on previous version and new one)
class MyMigration < ActiveRecord::Migration
...
```
It is always preferable to have a migration run online. If you expect the migration
to take particularly long (for instance, if it loops through all notes),
this is valuable information to add.
...
...
@@ -48,7 +57,6 @@ be possible to downgrade in case of a vulnerability or bugs.
In your migration, add a comment describing how the reversibility of the
migration was tested.
## Removing indices
If you need to remove index, please add a condition like in following example:
...
...
@@ -70,6 +78,7 @@ so:
```
class MyMigration < ActiveRecord::Migration
include Gitlab::Database::MigrationHelpers
disable_ddl_transaction!
def change
...
...
@@ -90,8 +99,11 @@ value of `10` you'd write the following:
```
class MyMigration < ActiveRecord::Migration
include Gitlab::Database::MigrationHelpers
disable_ddl_transaction!
def up
add_column_with_default(:projects, :foo, :integer, 10)
add_column_with_default(:projects, :foo, :integer,
default:
10)
end
def down
...
...
编辑
预览
Markdown
is supported
0%
请重试
或
添加新附件
.
添加附件
取消
You are about to add
0
people
to the discussion. Proceed with caution.
先完成此消息的编辑!
取消
想要评论请
注册
或
登录