From d22215129ee4747f9a9dd5b089d9f6920efc91ad Mon Sep 17 00:00:00 2001
From: li-jin-gou <97824201+li-jin-gou@users.noreply.github.com>
Date: Tue, 8 Feb 2022 17:06:10 +0800
Subject: [PATCH] fix: replace empty table name result in panic (#5048)

* fix: replace empty name result in panic

* fix: replace empty table name result in panic
---
 schema/naming.go      |  8 +++++++-
 schema/naming_test.go | 11 +++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/schema/naming.go b/schema/naming.go
index 8407bffa..a4e3a75b 100644
--- a/schema/naming.go
+++ b/schema/naming.go
@@ -120,7 +120,13 @@ func (ns NamingStrategy) toDBName(name string) string {
 	}
 
 	if ns.NameReplacer != nil {
-		name = ns.NameReplacer.Replace(name)
+		tmpName := ns.NameReplacer.Replace(name)
+
+		if tmpName == "" {
+			return name
+		}
+
+		name = tmpName
 	}
 
 	if ns.NoLowerCase {
diff --git a/schema/naming_test.go b/schema/naming_test.go
index c3e6bf92..1fdab9a0 100644
--- a/schema/naming_test.go
+++ b/schema/naming_test.go
@@ -197,3 +197,14 @@ func TestFormatNameWithStringLongerThan64Characters(t *testing.T) {
 		t.Errorf("invalid formatted name generated, got %v", formattedName)
 	}
 }
+
+func TestReplaceEmptyTableName(t *testing.T) {
+	ns := NamingStrategy{
+		SingularTable: true,
+		NameReplacer:  strings.NewReplacer("Model", ""),
+	}
+	tableName := ns.TableName("Model")
+	if tableName != "Model" {
+		t.Errorf("invalid table name generated, got %v", tableName)
+	}
+}