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Tabified code sample indentation.
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README.md
146
README.md
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@ -52,40 +52,40 @@ go get -u github.com/jinzhu/gorm
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```go
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type User struct {
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Id int64
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Birthday time.Time
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Age int64
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Name string `sql:"size:255"`
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CreatedAt time.Time
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UpdatedAt time.Time
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DeletedAt time.Time
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Id int64
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Birthday time.Time
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Age int64
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Name string `sql:"size:255"`
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CreatedAt time.Time
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UpdatedAt time.Time
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DeletedAt time.Time
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Emails []Email // One-To-Many relationship (has many)
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BillingAddress Address // One-To-One relationship (has one)
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BillingAddressId sql.NullInt64 // Foreign key of BillingAddress
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ShippingAddress Address // One-To-One relationship (has one)
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ShippingAddressId int64 // Foreign key of ShippingAddress
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IgnoreMe int64 `sql:"-"` // Ignore this field
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Languages []Language `gorm:"many2many:user_languages;"` // Many-To-Many relationship, 'user_languages' is join table
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Emails []Email // One-To-Many relationship (has many)
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BillingAddress Address // One-To-One relationship (has one)
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BillingAddressId sql.NullInt64 // Foreign key of BillingAddress
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ShippingAddress Address // One-To-One relationship (has one)
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ShippingAddressId int64 // Foreign key of ShippingAddress
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IgnoreMe int64 `sql:"-"` // Ignore this field
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Languages []Language `gorm:"many2many:user_languages;"` // Many-To-Many relationship, 'user_languages' is join table
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}
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type Email struct {
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Id int64
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UserId int64 // Foreign key for User (belongs to)
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Email string `sql:"type:varchar(100);"` // Set field's type
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Subscribed bool
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Id int64
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UserId int64 // Foreign key for User (belongs to)
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Email string `sql:"type:varchar(100);"` // Set field's type
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Subscribed bool
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}
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type Address struct {
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Id int64
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Address1 string `sql:"not null;unique"` // Set field as not nullable and unique
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Address2 string `sql:"type:varchar(100);unique"`
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Post sql.NullString `sql:not null`
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Id int64
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Address1 string `sql:"not null;unique"` // Set field as not nullable and unique
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Address2 string `sql:"type:varchar(100);unique"`
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Post sql.NullString `sql:not null`
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}
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type Language struct {
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Id int64
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Name string
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Id int64
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Name string
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}
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```
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@ -94,10 +94,10 @@ type Language struct {
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```go
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import (
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"github.com/jinzhu/gorm"
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_ "github.com/lib/pq"
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_ "github.com/go-sql-driver/mysql"
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_ "github.com/mattn/go-sqlite3"
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"github.com/jinzhu/gorm"
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_ "github.com/lib/pq"
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_ "github.com/go-sql-driver/mysql"
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_ "github.com/mattn/go-sqlite3"
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)
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db, err := gorm.Open("postgres", "user=gorm dbname=gorm sslmode=disable")
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@ -172,11 +172,11 @@ db.Save(&user)
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// Associations will be saved automatically when insert the record
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user := User{
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Name: "jinzhu",
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BillingAddress: Address{Address1: "Billing Address - Address 1"},
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ShippingAddress: Address{Address1: "Shipping Address - Address 1"},
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Emails: []Email{{Email: "jinzhu@example.com"}, {Email: "jinzhu-2@example@example.com"}},
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Languages: []Language{{Name: "ZH"}, {Name: "EN"}},
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Name: "jinzhu",
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BillingAddress: Address{Address1: "Billing Address - Address 1"},
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ShippingAddress: Address{Address1: "Shipping Address - Address 1"},
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Emails: []Email{{Email: "jinzhu@example.com"}, {Email: "jinzhu-2@example@example.com"}},
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Languages: []Language{{Name: "ZH"}, {Name: "EN"}},
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}
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db.Create(&user)
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@ -700,18 +700,18 @@ row.Scan(&name, &age)
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rows, err := db.Model(User{}).Where("name = ?", "jinzhu").Select("name, age, email").Rows() // (*sql.Rows, error)
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defer rows.Close()
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for rows.Next() {
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...
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rows.Scan(&name, &age, &email)
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...
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...
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rows.Scan(&name, &age, &email)
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...
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}
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// Raw SQL
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rows, err := db.Raw("select name, age, email from users where name = ?", "jinzhu").Rows() // (*sql.Rows, error)
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defer rows.Close()
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for rows.Next() {
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...
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rows.Scan(&name, &age, &email)
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...
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...
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rows.Scan(&name, &age, &email)
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...
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}
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```
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@ -721,8 +721,8 @@ Scan results into another struct.
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```go
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type Result struct {
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Name string
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Age int
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Name string
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Age int
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}
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var result Result
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@ -737,17 +737,17 @@ db.Raw("SELECT name, age FROM users WHERE name = ?", 3).Scan(&result)
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```go
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rows, err := db.Table("orders").Select("date(created_at) as date, sum(amount) as total").Group("date(created_at)").Rows()
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for rows.Next() {
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...
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...
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}
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rows, err := db.Table("orders").Select("date(created_at) as date, sum(amount) as total").Group("date(created_at)").Having("sum(amount) > ?", 100).Rows()
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for rows.Next() {
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...
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...
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}
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type Result struct {
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Date time.Time
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Total int64
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Date time.Time
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Total int64
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}
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db.Table("orders").Select("date(created_at) as date, sum(amount) as total").Group("date(created_at)").Having("sum(amount) > ?", 100).Scan(&results)
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```
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@ -757,7 +757,7 @@ db.Table("orders").Select("date(created_at) as date, sum(amount) as total").Grou
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```go
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rows, err := db.Table("users").Select("users.name, emails.email").Joins("left join emails on emails.user_id = users.id").Rows()
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for rows.Next() {
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...
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...
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}
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db.Table("users").Select("users.name, emails.email").Joins("left join emails on emails.user_id = users.id").Scan(&results)
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@ -782,21 +782,21 @@ tx.Commit()
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```go
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func AmountGreaterThan1000(db *gorm.DB) *gorm.DB {
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return db.Where("amount > ?", 1000)
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return db.Where("amount > ?", 1000)
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}
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func PaidWithCreditCard(db *gorm.DB) *gorm.DB {
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return db.Where("pay_mode_sign = ?", "C")
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return db.Where("pay_mode_sign = ?", "C")
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}
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func PaidWithCod(db *gorm.DB) *gorm.DB {
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return db.Where("pay_mode_sign = ?", "C")
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return db.Where("pay_mode_sign = ?", "C")
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}
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func OrderStatus(status []string) func (db *gorm.DB) *gorm.DB {
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return func (db *gorm.DB) *gorm.DB {
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return db.Scopes(AmountGreaterThan1000).Where("status in (?)", status)
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}
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return func (db *gorm.DB) *gorm.DB {
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return db.Scopes(AmountGreaterThan1000).Where("status in (?)", status)
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}
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}
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db.Scopes(AmountGreaterThan1000, PaidWithCreditCard).Find(&orders)
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@ -859,18 +859,18 @@ AfterFind
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```go
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func (u *User) BeforeUpdate() (err error) {
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if u.readonly() {
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err = errors.New("read only user")
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}
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return
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if u.readonly() {
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err = errors.New("read only user")
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}
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return
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}
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// Rollback the insertion if user's id greater than 1000
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func (u *User) AfterCreate() (err error) {
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if (u.Id > 1000) {
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err = errors.New("user id is already greater than 1000")
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}
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return
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if (u.Id > 1000) {
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err = errors.New("user id is already greater than 1000")
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}
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return
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}
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```
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@ -881,8 +881,8 @@ Fortunately, gorm support pass transaction to callbacks as you needed, you could
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```go
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func (u *User) AfterCreate(tx *gorm.DB) (err error) {
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tx.Model(u).Update("role", "admin")
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return
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tx.Model(u).Update("role", "admin")
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return
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}
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```
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@ -907,15 +907,15 @@ type Cart struct {
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}
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func (c Cart) TableName() string {
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return "shopping_cart"
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return "shopping_cart"
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}
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func (u User) TableName() string {
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if u.Role == "admin" {
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return "admin_users"
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} else {
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return "users"
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}
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if u.Role == "admin" {
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return "admin_users"
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} else {
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return "users"
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}
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}
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```
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@ -928,7 +928,7 @@ query := db.First(&user).Limit(10).Find(&users)
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// So you could do error handing in your application like this:
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if err := db.Where("name = ?", "jinzhu").First(&user).Error; err != nil {
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// error handling...
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// error handling...
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}
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// RecordNotFound
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db.Where("name = ?", "hello world").First(&user).RecordNotFound()
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if db.Model(&user).Related(&credit_card).RecordNotFound() {
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// no credit card found error handling
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// no credit card found error handling
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}
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```
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@ -973,9 +973,9 @@ If you have an existing database schema, and the primary key field is different
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```go
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type Animal struct {
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AnimalId int64 `gorm:"primary_key:yes"`
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Birthday time.Time
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Age int64
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AnimalId int64 `gorm:"primary_key:yes"`
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Birthday time.Time
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Age int64
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}
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```
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