Fix create associations with zero primary key, close #4890

callbacks/associations.go

@@ -207,7 +207,7 @@ func SaveAfterAssociations(create bool) func(db *gorm.DB) {
 							}
 
 							cacheKey := utils.ToStringKey(relPrimaryValues)
-							if len(relPrimaryValues) == 0 || (len(relPrimaryValues) == len(rel.FieldSchema.PrimaryFields) && !identityMap[cacheKey]) {
+							if len(relPrimaryValues) != len(rel.FieldSchema.PrimaryFields) || !identityMap[cacheKey] {
 								identityMap[cacheKey] = true
 								if isPtr {
 									elems = reflect.Append(elems, elem)

tests/associations_test.go

@@ -179,12 +179,8 @@ func TestForeignKeyConstraintsBelongsTo(t *testing.T) {
 
 func TestFullSaveAssociations(t *testing.T) {
 	coupon := &Coupon{
-		ID: "full-save-association-coupon1",
 		AppliesToProduct: []*CouponProduct{
-			{
-				CouponId:  "full-save-association-coupon1",
-				ProductId: "full-save-association-product1",
-			},
+			{ProductId: "full-save-association-product1"},
 		},
 		AmountOff:  10,
 		PercentOff: 0.0,
@@ -198,11 +194,11 @@ func TestFullSaveAssociations(t *testing.T) {
 		t.Errorf("Failed, got error: %v", err)
 	}
 
-	if DB.First(&Coupon{}, "id = ?", "full-save-association-coupon1").Error != nil {
+	if DB.First(&Coupon{}, "id = ?", coupon.ID).Error != nil {
 		t.Errorf("Failed to query saved coupon")
 	}
 
-	if DB.First(&CouponProduct{}, "coupon_id = ? AND product_id = ?", "full-save-association-coupon1", "full-save-association-product1").Error != nil {
+	if DB.First(&CouponProduct{}, "coupon_id = ? AND product_id = ?", coupon.ID, "full-save-association-product1").Error != nil {
 		t.Errorf("Failed to query saved association")
 	}
 
@@ -210,4 +206,18 @@ func TestFullSaveAssociations(t *testing.T) {
 	if err := DB.Create(&orders).Error; err != nil {
 		t.Errorf("failed to create orders, got %v", err)
 	}
+
+	coupon2 := Coupon{
+		AppliesToProduct: []*CouponProduct{{Desc: "coupon-description"}},
+	}
+
+	DB.Session(&gorm.Session{FullSaveAssociations: true}).Create(&coupon2)
+	var result Coupon
+	if err := DB.Preload("AppliesToProduct").First(&result, "id = ?", coupon2.ID).Error; err != nil {
+		t.Errorf("Failed to create coupon w/o name, got error: %v", err)
+	}
+
+	if len(result.AppliesToProduct) != 1 {
+		t.Errorf("Failed to preload AppliesToProduct")
+	}
 }

utils/tests/models.go

@@ -62,15 +62,16 @@ type Language struct {
 }
 
 type Coupon struct {
-	ID               string           `gorm:"primarykey; size:255"`
+	ID               int              `gorm:"primarykey; size:255"`
 	AppliesToProduct []*CouponProduct `gorm:"foreignKey:CouponId;constraint:OnDelete:CASCADE"`
 	AmountOff        uint32           `gorm:"amount_off"`
 	PercentOff       float32          `gorm:"percent_off"`
 }
 
 type CouponProduct struct {
-	CouponId  string `gorm:"primarykey; size:255"`
-	ProductId string `gorm:"primarykey; size:255"`
+	CouponId  int    `gorm:"primarykey;size:255"`
+	ProductId string `gorm:"primarykey;size:255"`
+	Desc      string
 }
 
 type Order struct {