mirror of https://github.com/go-gorm/gorm.git
fix minor grammar issues and broken header link in README.md
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README.md
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README.md
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@ -28,7 +28,7 @@ go get github.com/jinzhu/gorm
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## Conventions
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* Table name is the plural of struct name's snake case.
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Disable pluralization with `db.SingularTable(true)`, or [Specifying the Table Name for Struct permanently with TableName](#Specifying-the-Table-Name-for-Struct-permanently-with-TableName)
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Disable pluralization with `db.SingularTable(true)`, or [Specifying The Table Name For A Struct Permanently With TableName](#specifying-the-table-name-for-a-struct-permanently-with-tablename)
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* Column name is the snake case of field's name.
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* Use `Id int64` field as primary key.
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* Use tag `sql` to change field's property, change the tag name with `db.SetTagIdentifier(new_name)`.
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@ -47,9 +47,9 @@ db.First(&user)
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DB.Save(&User{Name: "xxx"}) // table "users"
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```
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## Existing schema
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## Existing Schema
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If you have and existing database schema and some of your tables does not follow the conventions, (and you can't rename your table names), please use: [Specifying the Table Name for Struct permanently with TableName](#Specifying-the-Table-Name-for-Struct-permanently-with-TableName).
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If you have an existing database schema and some of your tables do not follow the conventions, (and you can't rename your table names), please use: [Specifying The Table Name For A Struct Permanently With TableName](#specifying-the-table-name-for-a-struct-permanently-with-tableName).
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If your primary key field is different from `id`, you can add a tag to the field structure to specify that this field is a primary key.
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@ -183,11 +183,11 @@ db.DropTable(User{})
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### Automating Migrations
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Feel free to update your struct, AutoMigrate will keep your database update to date.
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Feel free to update your struct, AutoMigrate will keep your database up-to-date.
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FYI, AutoMigrate will only add new columns, it won't change the current columns' types or delete unused columns, to make sure your data is safe.
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If the table doesn't exist when AutoMigrate, gorm will run create the table automatically.
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If the table doesn't exist when AutoMigrate is called, gorm will create the table automatically.
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(the database first needs to be created manually though...).
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(only postgres and mysql supported)
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@ -251,7 +251,7 @@ db.First(&user)
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db.Last(&user)
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//// SELECT * FROM users ORDER BY id DESC LIMIT 1;
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// Get All records
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// Get all records
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db.Find(&users)
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//// SELECT * FROM users;
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@ -282,7 +282,7 @@ db.Where("name in (?)", []string{"jinzhu", "jinzhu 2"}).Find(&users)
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db.Where("name LIKE ?", "%jin%").Find(&users)
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//// SELECT * FROM users WHERE name LIKE "%jin%";
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// Multiple Conditions
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// Multiple conditions
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db.Where("name = ? and age >= ?", "jinzhu", "22").Find(&users)
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//// SELECT * FROM users WHERE name = 'jinzhu' AND age >= 22;
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```
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@ -298,7 +298,7 @@ db.Where(&User{Name: "jinzhu", Age: 20}).First(&user)
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db.Where(map[string]interface{}{"name": "jinzhu", "age": 20}).Find(&users)
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//// SELECT * FROM users WHERE name = "jinzhu" AND age = 20;
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// IN for primary Keys
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// IN for primary keys
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db.Where([]int64{20, 21, 22}).Find(&users)
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//// SELECT * FROM users WHERE id IN (20, 21, 22);
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```
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@ -341,7 +341,7 @@ db.First(&user, 23)
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db.Find(&user, "name = ?", "jinzhu")
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//// SELECT * FROM users WHERE name = "jinzhu";
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// Multiple Conditions
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// Multiple conditions
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db.Find(&users, "name <> ? and age > ?", "jinzhu", 20)
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//// SELECT * FROM users WHERE name <> "jinzhu" AND age > 20;
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@ -397,7 +397,7 @@ db.Where("role = ?", "admin").Or("role = ?", "super_admin").Not("name = ?", "jin
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## Update
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### Update an existing struct
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### Update An Existing Struct
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```go
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user.Name = "jinzhu 2"
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@ -406,7 +406,7 @@ db.Save(&user)
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//// UPDATE users SET name='jinzhu 2', age=100, updated_at = '2013-11-17 21:34:10' WHERE id=111;
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```
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### Update one attribute with `Update`
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### Update One Attribute With `Update`
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```go
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// Update existing user's name if it is changed
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@ -423,7 +423,7 @@ db.Table("users").Where(10).Update("name", "hello")
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//// UPDATE users SET name='hello' WHERE id = 10;
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```
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### Update multiple attributes with `Updates`
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### Update Multiple Attributes With `Updates`
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```go
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// Update user's name and age if they are changed
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@ -439,7 +439,7 @@ db.Model(User{}).Updates(User{Name: "hello", Age: 18})
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//// UPDATE users SET name='hello', age=18;
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```
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### Update attributes without callbacks
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### Update Attributes Without Callbacks
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```go
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db.Model(&user).UpdateColumn("name", "hello")
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@ -451,14 +451,14 @@ db.Model(&user).UpdateColumns(User{Name: "hello", Age: 18})
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## Delete
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### Delete an existing struct
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### Delete An Existing Struct
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```go
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db.Delete(&email)
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// DELETE from emails where id=10;
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```
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### Batch Delete with search
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### Batch Delete With Search
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```go
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db.Where("email LIKE ?", "%jinzhu%").Delete(Email{})
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@ -467,9 +467,9 @@ db.Where("email LIKE ?", "%jinzhu%").Delete(Email{})
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### Soft Delete
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If a struct has a DeletedAt field, it will get soft delete ability automatically!
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If a struct has a DeletedAt field, it will get a soft delete ability automatically!
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Structs that don't have a DeletedAt field will be deleted from the database permanently
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Structs that don't have a DeletedAt field will be deleted from the database permanently.
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```go
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db.Delete(&user)
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@ -646,7 +646,7 @@ db.Table("deleted_users").Count(&count)
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## Pluck
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Get struct's selected attributes as a map
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Get struct's selected attributes as a map.
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```go
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var ages []int64
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@ -692,7 +692,7 @@ If any callback returns an error, gorm will stop future operations and rollback
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Here is a list of all available callbacks,
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listed in the same order in which they will get called during the respective operations.
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### Creating an Object
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### Creating An Object
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```go
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BeforeSave
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@ -703,7 +703,7 @@ BeforeCreate
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AfterCreate
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AfterSave
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```
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### Updating an Object
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### Updating An Object
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```go
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BeforeSave
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@ -715,7 +715,7 @@ AfterUpdate
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AfterSave
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```
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### Destroying an Object
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### Destroying An Object
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```go
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BeforeDelete
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@ -760,7 +760,7 @@ func (u *User) AfterCreate(tx *gorm.DB) (err error) {
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}
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```
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## Specifying the Table Name
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## Specifying The Table Name
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```go
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// Create `deleted_users` table with User's fields
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@ -776,7 +776,7 @@ db.Table("deleted_users").Where("name = ?", "jinzhu").Delete()
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//// DELETE FROM deleted_users WHERE name = 'jinzhu';
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```
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### Specifying the Table Name for Struct permanently with TableName
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### Specifying The Table Name For A Struct Permanently with TableName
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```go
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type Cart struct {
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@ -853,7 +853,7 @@ db.Debug().Where("name = ?", "jinzhu").First(&User{})
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## Row & Rows
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Row & Rows is not chainable, it works just like `QueryRow` and `Query`
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Row & Rows is not chainable, it works just like `QueryRow` and `Query`.
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```go
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row := db.Table("users").Where("name = ?", "jinzhu").select("name, age").Row() // (*sql.Row)
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@ -879,7 +879,7 @@ for rows.Next() {
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## Scan
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Scan sql results into strcut
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Scan sql results into a struct.
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```go
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type Result struct {
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@ -952,7 +952,7 @@ if err := db.Where("name = ?", "jinzhu").First(&user).Error; err != nil {
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// If no record is found, gorm will return RecordNotFound error, you could check it with
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db.Where("name = ?", "hello world").First(&User{}).Error == gorm.RecordNotFound
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// Or use shortcut method
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// Or use the shortcut method
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if db.Where("name = ?", "hello world").First(&user).RecordNotFound() {
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panic("no record found")
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} else {
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