Fix FirstOr(Init/Create) when assigning with association

finisher_api.go

@@ -8,6 +8,7 @@ import (
 	"strings"
 
 	"gorm.io/gorm/clause"
+	"gorm.io/gorm/schema"
 	"gorm.io/gorm/utils"
 )
 
@@ -132,8 +133,11 @@ func (db *DB) FindInBatches(dest interface{}, batchSize int, fc func(tx *DB, bat
 	return
 }
 
-func (tx *DB) assignExprsToValue(exprs []clause.Expression) {
-	for _, expr := range exprs {
+func (tx *DB) assignInterfacesToValue(values ...interface{}) {
+	for _, value := range values {
+		switch v := value.(type) {
+		case []clause.Expression:
+			for _, expr := range v {
 				if eq, ok := expr.(clause.Eq); ok {
 					switch column := eq.Column.(type) {
 					case string:
@@ -148,28 +152,51 @@ func (tx *DB) assignExprsToValue(exprs []clause.Expression) {
 					}
 				}
 			}
+		case clause.Expression, map[string]string, map[interface{}]interface{}, map[string]interface{}:
+			exprs := tx.Statement.BuildCondition(value)
+			tx.assignInterfacesToValue(exprs)
+		default:
+			if s, err := schema.Parse(value, tx.cacheStore, tx.NamingStrategy); err == nil {
+				reflectValue := reflect.Indirect(reflect.ValueOf(value))
+				switch reflectValue.Kind() {
+				case reflect.Struct:
+					for _, f := range s.Fields {
+						if f.Readable {
+							if v, isZero := f.ValueOf(reflectValue); !isZero {
+								if field := tx.Statement.Schema.LookUpField(f.Name); field != nil {
+									tx.AddError(field.Set(tx.Statement.ReflectValue, v))
+								}
+							}
+						}
+					}
+				}
+			} else if len(values) > 0 {
+				exprs := tx.Statement.BuildCondition(values[0], values[1:]...)
+				tx.assignInterfacesToValue(exprs)
+				return
+			}
+		}
+	}
 }
 
 func (db *DB) FirstOrInit(dest interface{}, conds ...interface{}) (tx *DB) {
 	if tx = db.First(dest, conds...); errors.Is(tx.Error, ErrRecordNotFound) {
 		if c, ok := tx.Statement.Clauses["WHERE"]; ok {
 			if where, ok := c.Expression.(clause.Where); ok {
-				tx.assignExprsToValue(where.Exprs)
+				tx.assignInterfacesToValue(where.Exprs)
 			}
 		}
 
 		// initialize with attrs, conds
 		if len(tx.Statement.attrs) > 0 {
-			exprs := tx.Statement.BuildCondition(tx.Statement.attrs[0], tx.Statement.attrs[1:]...)
-			tx.assignExprsToValue(exprs)
+			tx.assignInterfacesToValue(tx.Statement.attrs...)
 		}
 		tx.Error = nil
 	}
 
 	// initialize with attrs, conds
 	if len(tx.Statement.assigns) > 0 {
-		exprs := tx.Statement.BuildCondition(tx.Statement.assigns[0], tx.Statement.assigns[1:]...)
-		tx.assignExprsToValue(exprs)
+		tx.assignInterfacesToValue(tx.Statement.assigns...)
 	}
 	return
 }
@@ -180,20 +207,18 @@ func (db *DB) FirstOrCreate(dest interface{}, conds ...interface{}) (tx *DB) {
 
 		if c, ok := tx.Statement.Clauses["WHERE"]; ok {
 			if where, ok := c.Expression.(clause.Where); ok {
-				tx.assignExprsToValue(where.Exprs)
+				tx.assignInterfacesToValue(where.Exprs)
 			}
 		}
 
 		// initialize with attrs, conds
 		if len(tx.Statement.attrs) > 0 {
-			exprs := tx.Statement.BuildCondition(tx.Statement.attrs[0], tx.Statement.attrs[1:]...)
-			tx.assignExprsToValue(exprs)
+			tx.assignInterfacesToValue(tx.Statement.attrs...)
 		}
 
 		// initialize with attrs, conds
 		if len(tx.Statement.assigns) > 0 {
-			exprs := tx.Statement.BuildCondition(tx.Statement.assigns[0], tx.Statement.assigns[1:]...)
-			tx.assignExprsToValue(exprs)
+			tx.assignInterfacesToValue(tx.Statement.assigns...)
 		}
 
 		return tx.Create(dest)

tests/query_test.go

@@ -110,6 +110,8 @@ func TestQueryWithAssociation(t *testing.T) {
 		t.Fatalf("errors happened when create user: %v", err)
 	}
 
+	user.CreatedAt = time.Time{}
+	user.UpdatedAt = time.Time{}
 	if err := DB.Where(&user).First(&User{}).Error; err != nil {
 		t.Errorf("search with struct with association should returns no error, but got %v", err)
 	}