diff --git a/callbacks/query.go b/callbacks/query.go index 26ee8c34..67936766 100644 --- a/callbacks/query.go +++ b/callbacks/query.go @@ -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)) diff --git a/chainable_api.go b/chainable_api.go index ab3a1a32..6d48d56b 100644 --- a/chainable_api.go +++ b/chainable_api.go @@ -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 { diff --git a/statement.go b/statement.go index d05d299e..d4d20cbf 100644 --- a/statement.go +++ b/statement.go @@ -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 diff --git a/tests/joins_test.go b/tests/joins_test.go index 7519db82..091fb986 100644 --- a/tests/joins_test.go +++ b/tests/joins_test.go @@ -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, "") +}