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fix(Joins): args with select and omit (#5790)

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* fix(Joins): args with select and omit

* chore: gofumpt style
This commit is contained in:
Cr 2022-11-02 10:28:00 +08:00 committed by GitHub
parent 9d82aa5673
commit b2f42528a4
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 92 additions and 31 deletions
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18
callbacks/query.go
View File

@ -117,12 +117,20 @@ func BuildQuerySQL(db *gorm.DB) {
} else if relation, ok := db.Statement.Schema.Relationships.Relations[join.Name]; ok {
tableAliasName := relation.Name
columnStmt := gorm.Statement{
Table: tableAliasName, DB: db, Schema: relation.FieldSchema,
Selects: join.Selects, Omits: join.Omits,
}
selectColumns, restricted := columnStmt.SelectAndOmitColumns(false, false)
for _, s := range relation.FieldSchema.DBNames {
clauseSelect.Columns = append(clauseSelect.Columns, clause.Column{
Table: tableAliasName,
Name: s,
Alias: tableAliasName + "__" + s,
})
if v, ok := selectColumns[s]; (ok && v) || (!ok && !restricted) {
clauseSelect.Columns = append(clauseSelect.Columns, clause.Column{
Table: tableAliasName,
Name: s,
Alias: tableAliasName + "__" + s,
})
}
}
exprs := make([]clause.Expression, len(relation.References))

49
chainable_api.go
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@ -10,10 +10,11 @@ import (
)
// Model specify the model you would like to run db operations
// // update all users's name to `hello`
// db.Model(&User{}).Update("name", "hello")
// // if user's primary key is non-blank, will use it as condition, then will only update the user's name to `hello`
// db.Model(&user).Update("name", "hello")
//
// // update all users's name to `hello`
// db.Model(&User{}).Update("name", "hello")
// // if user's primary key is non-blank, will use it as condition, then will only update the user's name to `hello`
// db.Model(&user).Update("name", "hello")
func (db *DB) Model(value interface{}) (tx *DB) {
tx = db.getInstance()
tx.Statement.Model = value
@ -179,18 +180,21 @@ func (db *DB) Or(query interface{}, args ...interface{}) (tx *DB) {
}
// Joins specify Joins conditions
// db.Joins("Account").Find(&user)
// db.Joins("JOIN emails ON emails.user_id = users.id AND emails.email = ?", "jinzhu@example.org").Find(&user)
// db.Joins("Account", DB.Select("id").Where("user_id = users.id AND name = ?", "someName").Model(&Account{}))
//
// db.Joins("Account").Find(&user)
// db.Joins("JOIN emails ON emails.user_id = users.id AND emails.email = ?", "jinzhu@example.org").Find(&user)
// db.Joins("Account", DB.Select("id").Where("user_id = users.id AND name = ?", "someName").Model(&Account{}))
func (db *DB) Joins(query string, args ...interface{}) (tx *DB) {
tx = db.getInstance()
if len(args) == 1 {
if db, ok := args[0].(*DB); ok {
j := join{Name: query, Conds: args, Selects: db.Statement.Selects, Omits: db.Statement.Omits}
if where, ok := db.Statement.Clauses["WHERE"].Expression.(clause.Where); ok {
tx.Statement.Joins = append(tx.Statement.Joins, join{Name: query, Conds: args, On: &where})
return
j.On = &where
}
tx.Statement.Joins = append(tx.Statement.Joins, j)
return
}
}
@ -219,8 +223,9 @@ func (db *DB) Having(query interface{}, args ...interface{}) (tx *DB) {
}
// Order specify order when retrieve records from database
// db.Order("name DESC")
// db.Order(clause.OrderByColumn{Column: clause.Column{Name: "name"}, Desc: true})
//
// db.Order("name DESC")
// db.Order(clause.OrderByColumn{Column: clause.Column{Name: "name"}, Desc: true})
func (db *DB) Order(value interface{}) (tx *DB) {
tx = db.getInstance()
@ -256,17 +261,18 @@ func (db *DB) Offset(offset int) (tx *DB) {
}
// Scopes pass current database connection to arguments `func(DB) DB`, which could be used to add conditions dynamically
// func AmountGreaterThan1000(db *gorm.DB) *gorm.DB {
// return db.Where("amount > ?", 1000)
// }
//
// func OrderStatus(status []string) func (db *gorm.DB) *gorm.DB {
// return func (db *gorm.DB) *gorm.DB {
// return db.Scopes(AmountGreaterThan1000).Where("status in (?)", status)
// }
// }
// func AmountGreaterThan1000(db *gorm.DB) *gorm.DB {
// return db.Where("amount > ?", 1000)
// }
//
// db.Scopes(AmountGreaterThan1000, OrderStatus([]string{"paid", "shipped"})).Find(&orders)
// func OrderStatus(status []string) func (db *gorm.DB) *gorm.DB {
// return func (db *gorm.DB) *gorm.DB {
// return db.Scopes(AmountGreaterThan1000).Where("status in (?)", status)
// }
// }
//
// db.Scopes(AmountGreaterThan1000, OrderStatus([]string{"paid", "shipped"})).Find(&orders)
func (db *DB) Scopes(funcs ...func(*DB) *DB) (tx *DB) {
tx = db.getInstance()
tx.Statement.scopes = append(tx.Statement.scopes, funcs...)
@ -274,7 +280,8 @@ func (db *DB) Scopes(funcs ...func(*DB) *DB) (tx *DB) {
}
// Preload preload associations with given conditions
// db.Preload("Orders", "state NOT IN (?)", "cancelled").Find(&users)
//
// db.Preload("Orders", "state NOT IN (?)", "cancelled").Find(&users)
func (db *DB) Preload(query string, args ...interface{}) (tx *DB) {
tx = db.getInstance()
if tx.Statement.Preloads == nil {

13
statement.go
View File

@ -49,9 +49,11 @@ type Statement struct {
}
type join struct {
Name string
Conds []interface{}
On *clause.Where
Name string
Conds []interface{}
On *clause.Where
Selects []string
Omits []string
}
// StatementModifier statement modifier interface
@ -544,8 +546,9 @@ func (stmt *Statement) clone() *Statement {
}
// SetColumn set column's value
// stmt.SetColumn("Name", "jinzhu") // Hooks Method
// stmt.SetColumn("Name", "jinzhu", true) // Callbacks Method
//
// stmt.SetColumn("Name", "jinzhu") // Hooks Method
// stmt.SetColumn("Name", "jinzhu", true) // Callbacks Method
func (stmt *Statement) SetColumn(name string, value interface{}, fromCallbacks ...bool) {
if v, ok := stmt.Dest.(map[string]interface{}); ok {
v[name] = value

43
tests/joins_test.go
View File

@ -260,3 +260,46 @@ func TestJoinWithSameColumnName(t *testing.T) {
t.Fatalf("wrong pet name")
}
}
func TestJoinArgsWithDB(t *testing.T) {
user := *GetUser("joins-args-db", Config{Pets: 2})
DB.Save(&user)
// test where
var user1 User
onQuery := DB.Where(&Pet{Name: "joins-args-db_pet_2"})
if err := DB.Joins("NamedPet", onQuery).Where("users.name = ?", user.Name).First(&user1).Error; err != nil {
t.Fatalf("Failed to load with joins on, got error: %v", err)
}
AssertEqual(t, user1.NamedPet.Name, "joins-args-db_pet_2")
// test where and omit
onQuery2 := DB.Where(&Pet{Name: "joins-args-db_pet_2"}).Omit("Name")
var user2 User
if err := DB.Joins("NamedPet", onQuery2).Where("users.name = ?", user.Name).First(&user2).Error; err != nil {
t.Fatalf("Failed to load with joins on, got error: %v", err)
}
AssertEqual(t, user2.NamedPet.ID, user1.NamedPet.ID)
AssertEqual(t, user2.NamedPet.Name, "")
// test where and select
onQuery3 := DB.Where(&Pet{Name: "joins-args-db_pet_2"}).Select("Name")
var user3 User
if err := DB.Joins("NamedPet", onQuery3).Where("users.name = ?", user.Name).First(&user3).Error; err != nil {
t.Fatalf("Failed to load with joins on, got error: %v", err)
}
AssertEqual(t, user3.NamedPet.ID, 0)
AssertEqual(t, user3.NamedPet.Name, "joins-args-db_pet_2")
// test select
onQuery4 := DB.Select("ID")
var user4 User
if err := DB.Joins("NamedPet", onQuery4).Where("users.name = ?", user.Name).First(&user4).Error; err != nil {
t.Fatalf("Failed to load with joins on, got error: %v", err)
}
if user4.NamedPet.ID == 0 {
t.Fatal("Pet ID can not be empty")
}
AssertEqual(t, user4.NamedPet.Name, "")
}