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Code Issues Releases Activity

zh docs update

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slene 2013-08-01 15:52:05 +08:00
parent 51baa35df1
commit 6e06720e84
5 changed files with 172 additions and 68 deletions
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10
orm/docs/zh/Models.md
View File

@ -278,12 +278,12 @@ type Tag struct {
设置对应的 rel 关系删除时，如何处理关系字段。
```go
cascade 级联删除(默认值)
set_null 设置为 NULL，需要设置 null = true
set_default 设置为默认值，需要设置 default 值
do_nothing 什么也不做，忽略
cascade 级联删除(默认值)
set_null 设置为 NULL，需要设置 null = true
set_default 设置为默认值，需要设置 default 值
do_nothing 什么也不做，忽略
```go
type User struct {
...
Profile *Profile `orm:"null;rel(one);on_delete(set_null)"`

54
orm/docs/zh/Object.md
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@ -1,58 +1,62 @@
## Object
对 object 操作的三个方法 Insert / Update / Delete
对 object 操作简单的三个方法 Read / Insert / Update / Delete
```go
o := orm.NewOrm()
user := NewUser()
user.UserName = "slene"
user.Password = "password"
user.Email = "vslene@gmail.com"
obj := o.Object(user)
fmt.Println(obj.Insert())
fmt.Println(o.Insert(user))
user.UserName = "Your"
fmt.Println(obj.Update())
fmt.Println(obj.Delete())
fmt.Println(o.Update(user))
fmt.Println(o.Delete(user))
```
### Read
```go
var user User
err := o.QueryTable("user").Filter("id", 1).One(&user)
if err != orm.ErrMultiRows {
fmt.Println(user.UserName)
o := orm.NewOrm()
user := User{Id: 1}
o.Read(&user)
if err == sql.ErrNoRows {
fmt.Println("查询不到")
} else if err == orm.ErrMissPK {
fmt.Println("找不到主键")
} else {
fmt.Println(user.Id, user.UserName)
}
```
### Create
### Insert
```go
profile := NewProfile()
profile.Age = 30
profile.Money = 9.8
user := NewUser()
user.Profile = profile
o := orm.NewOrm()
var user User
user.UserName = "slene"
user.Password = "password"
user.Email = "vslene@gmail.com"
user.IsActive = true
fmt.Println(o.Object(profile).Insert())
fmt.Println(o.Object(user).Insert())
fmt.Println(o.Insert(&user))
fmt.Println(user.Id)
```
创建后会自动对 auto 的 field 赋值
### Update
```go
var user User
err := o.QueryTable("user").Filter("id", 1).One(&user)
if err != orm.ErrMultiRows {
fmt.Println(user.UserName)
o := orm.NewOrm()
user := User{Id: 1}
if o.Read(&user) == nil {
user.UserName = "MyName"
o.Update(&user)
}
user.UserName = "MyName"
o.Object(&user).Update()
```
### Delete
```go
o.Object(user).Delete()
o := orm.NewOrm()
o.Delete(&User{Id: 1})
```
Delete 操作会对反向关系进行操作，此例中 Post 拥有一个到 User 的外键。删除 User 的时候。如果 on_delete 设置为默认的级联操作，将删除对应的 Post

4
orm/docs/zh/Orm.md
View File

@ -40,8 +40,8 @@ func main() {
user.Email = "vslene@gmail.com"
user.IsActive = true
fmt.Println(o.Object(profile).Insert())
fmt.Println(o.Object(user).Insert())
fmt.Println(o.Insert(profile))
fmt.Println(o.Insert(user))
var params []orm.Params
if cnt, err := o.QueryTable("user").RelatedSel().Limit(3).OrderBy("-id").Values(&params); err != nil {

134
orm/docs/zh/Query.md
View File

@ -126,6 +126,7 @@ qs.Filter("profile__isnull", false)
qs.Filter("profile__isnull", true).Filter("user_name", "slene")
// WHERE profile_id IS NULL AND user_name = 'slene'
```
#### Exclude
使用 `NOT` 排除条件
@ -135,6 +136,9 @@ qs.Filter("profile__isnull", true).Filter("user_name", "slene")
qs.Exclude("profile__isnull", true).Filter("user_name", "slene")
// WHERE NOT profile_id IS NULL AND user_name = 'slene'
```
#### SetCond
#### Limit
限制最大返回数据行数，第二个参数可以设置 `Offset`
@ -157,6 +161,7 @@ qs.Limit(-1, 100)
// LIMIT 18446744073709551615 OFFSET 100
// 18446744073709551615 是 1<<64 - 1 用来指定无 limit 限制 但有 offset 偏移的情况
```
#### Offset
设置 偏移行数
@ -164,6 +169,7 @@ qs.Limit(-1, 100)
qs.OFFSET(20)
// LIMIT 1000 OFFSET 20
```
#### OrderBy
参数使用 **expr**
@ -176,6 +182,7 @@ qs.OrderBy("id", "-profile__age")
qs.OrderBy("-profile__money", "profile")
// ORDER BY profile.money DESC, profile_id ASC
```
#### RelatedSel
关系查询，参数使用 **expr**
@ -193,15 +200,132 @@ qs.RelateSel("user")
// 对设置 null 属性的 Field 将使用 LEFT OUTER JOIN
```
#### Count
查询当前条件下的行数
#### Count
依据当前的查询条件，返回结果行数
```go
o.QueryTable("user").Count() // SELECT COUNT(*) FROM USER
cnt, err := o.QueryTable("user").Count() // SELECT COUNT(*) FROM USER
fmt.Printf("Count Num: %s, %s", cnt, err)
```
#### Update
依据当前查询条件，进行批量更新操作
```go
num, err := o.QueryTable("user").Filter("user_name", "slene").Update(orm.Params{
"user_name": "astaxie",
})
fmt.Printf("Affected Num: %s, %s", num, err)
// SET user_name = "astaixe" WHERE user_name = "slene"
```
#### Delete
依据当前查询条件，进行批量删除操作
```go
num, err := o.QueryTable("user").Filter("user_name", "slene").Delete()
fmt.Printf("Affected Num: %s, %s", num, err)
// DELETE FROM user WHERE user_name = "slene"
```
#### All
返回对应的结果集对象
```go
var users []*User
num, err := o.QueryTable("user").Filter("user_name", "slene").All(&users)
fmt.Printf("Returned Rows Num: %s, %s", num, err)
```
#### One
尝试返回单个对象
```go
var user *User
err := o.QueryTable("user").Filter("user_name", "slene").One(&user)
if err == orm.ErrMultiRows {
fmt.Printf("Returned Multi Rows Not One")
}
```
#### Values
返回结果集的 key => value 值
key 为 Model 里的 Field name，value 的值 以 string 保存
```go
var maps []orm.Params
num, err := o.QueryTable("user").Values(&maps)
if err != nil {
fmt.Printf("Result Nums: %d\n", num)
for _, m := range maps {
fmt.Println(m["Id"], m["UserName"])
}
}
```
返回指定的 Field 数据
**TODO**: 暂不支持级联查询 **RelatedSel** 直接返回 Values
但可以直接指定 expr 级联返回需要的数据
```go
var maps []orm.Params
num, err := o.QueryTable("user").Values(&maps, "id", "user_name", "profile", "profile__age")
if err != nil {
fmt.Printf("Result Nums: %d\n", num)
for _, m := range maps {
fmt.Println(m["Id"], m["UserName"], m["Profile"], m["Profile__Age"])
// map 中的数据都是展开的，没有复杂的嵌套
}
}
```
#### ValuesList
顾名思义，返回的结果集以slice存储
结果的排列与 Model 中定义的 Field 顺序一致
返回的每个元素值以 string 保存
```go
var lists []orm.ParamsList
num, err := o.QueryTable("user").ValuesList(&lists)
if err != nil {
fmt.Printf("Result Nums: %d\n", num)
for _, row := range lists {
fmt.Println(row)
}
}
```
当然也可以指定 expr 返回指定的 Field
```go
var lists []orm.ParamsList
num, err := o.QueryTable("user").ValuesList(&lists, "user_name", "profile__age")
if err != nil {
fmt.Printf("Result Nums: %d\n", num)
for _, row := range lists {
fmt.Printf("UserName: %s, Age: %s\m", row[0], row[1])
}
}
```
#### ValuesFlat
只返回特定的 Field 值，讲结果集展开到单个 slice 里
```go
var list orm.ParamsList
num, err := o.QueryTable("user").ValuesFlat(&list, "user_name")
if err != nil {
fmt.Printf("Result Nums: %d\n", num)
fmt.Printf("All User Names: %s", strings.Join(list, ", ")
}
```
#### PrepareInsert
用于批量插入 prepare -> insert -> insert

38
orm/docs/zh/README.md
View File

@ -18,18 +18,9 @@ type User struct {
orm.Manager
}
type Post struct {
Id int `orm:"auto"`
User *User `orm:"rel(fk)"`
Title string `orm:"size(100)"`
Content string
orm.Manager
}
func init() {
// 将表定义注册到 orm 里
orm.RegisterModel(new(User))
orm.RegisterModel(new(Post))
// 链接参数设置
orm.RegisterDataBase("default", "mysql", "root:root@/my_db?charset=utf8", 30)
@ -40,39 +31,24 @@ func main() {
o := orm.NewOrm()
var user User
obj := o.Object(&user)
user := User{Name: "slene"}
// 创建
user.Name = "slene"
id, err := obj.Insert()
id, err := o.Insert(&user)
fmt.Println(id, err)
// 更新
user.Name = "astaxie"
num, err := obj.Update()
num, err := o.Update(&user)
fmt.Println(num, err)
// 查询单个
var u User
err = o.QueryTable("user").Filter("id", &user).One(&u)
fmt.Println(u.Id, u.Name, err)
// 创建 post
var post Post
post.Title = "beego orm"
post.Content = "powerful amazing"
post.User = &u
id, err = o.Object(&post).Insert()
fmt.Println(id, err)
// 当然，以 map[string]interface{} 形式的数据返回也是允许的
var maps []orm.Params
num, err = o.QueryTable("user").Filter("id", &u).Values(&maps)
fmt.Println(num, err, maps[0])
u := User{Id: user.Id}
err = o.Read(&u)
fmt.Println(u.Name, err)
// 删除
num, err = obj.Delete() // 默认，级联删除 user 以及关系存在的 post
num, err = o.Delete(&u)
fmt.Println(num, err)
}
```