Fix Association.Replace() error returning

association.go

@@ -118,7 +118,7 @@ func (association *Association) Replace(values ...interface{}) error {
 
 			if _, pvs := schema.GetIdentityFieldValuesMap(reflectValue, primaryFields); len(pvs) > 0 {
 				column, values := schema.ToQueryValues(rel.FieldSchema.Table, foreignKeys, pvs)
-				tx.Where(clause.IN{Column: column, Values: values}).UpdateColumns(updateMap)
+				association.Error = tx.Where(clause.IN{Column: column, Values: values}).UpdateColumns(updateMap).Error
 			}
 		case schema.Many2Many:
 			var (
@@ -154,7 +154,7 @@ func (association *Association) Replace(values ...interface{}) error {
 				tx.Where(clause.Not(clause.IN{Column: relColumn, Values: relValues}))
 			}
 
-			tx.Delete(modelValue)
+			association.Error = tx.Delete(modelValue).Error
 		}
 	}
 	return association.Error

tests/associations_test.go

@@ -32,6 +32,41 @@ func TestInvalidAssociation(t *testing.T) {
 	}
 }
 
+func TestAssociationNotNullClear(t *testing.T) {
+	type Profile struct {
+		ID       uint
+		Number   string
+		MemberID uint `gorm:"not null"`
+	}
+
+	type Member struct {
+		ID       uint
+		Profiles []Profile
+	}
+
+	DB.Migrator().DropTable(&Member{}, &Profile{})
+
+	if err := DB.AutoMigrate(&Member{}, &Profile{}); err != nil {
+		t.Fatalf("Failed to migrate, got error: %v", err)
+	}
+
+	member := &Member{
+		Profiles: []Profile{{
+			Number: "1",
+		}, {
+			Number: "2",
+		}},
+	}
+
+	if err := DB.Create(&member).Error; err != nil {
+		t.Fatalf("Failed to create test data, got error: %v", err)
+	}
+
+	if err := DB.Model(member).Association("Profiles").Clear(); err == nil {
+		t.Fatalf("No error occured during clearind not null association")
+	}
+}
+
 func TestForeignKeyConstraints(t *testing.T) {
 	type Profile struct {
 		ID       uint