From 72421ab7e2f12b00560c091b6119699e1f982b35 Mon Sep 17 00:00:00 2001
From: Lunny Xiao <xiaolunwen@gmail.com>
Date: Wed, 21 Jun 2023 13:08:33 +0800
Subject: [PATCH] Check mysql database charset when installation

---
 options/locale/locale_en-US.ini | 1 +
 routers/install/install.go      | 6 ++++++
 templates/install.tmpl          | 2 +-
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/options/locale/locale_en-US.ini b/options/locale/locale_en-US.ini
index 0cf8810702025..7b24a6157b272 100644
--- a/options/locale/locale_en-US.ini
+++ b/options/locale/locale_en-US.ini
@@ -216,6 +216,7 @@ err_empty_admin_email = The administrator email cannot be empty.
 err_admin_name_is_reserved = Administrator Username is invalid, username is reserved
 err_admin_name_pattern_not_allowed = Administrator username is invalid, the username matches a reserved pattern
 err_admin_name_is_invalid = Administrator Username is invalid
+err_mysql_charset_must_utf8mb4 = The MySQL database should use UTF8Mb4 only
 
 general_title = General Settings
 app_name = Site Title
diff --git a/routers/install/install.go b/routers/install/install.go
index 16bb55b685b75..2aeff1ad1cb91 100644
--- a/routers/install/install.go
+++ b/routers/install/install.go
@@ -174,6 +174,12 @@ func checkDatabase(ctx *context.Context, form *forms.InstallForm) bool {
 		return false
 	}
 
+	if setting.Database.Type == "mysql" && setting.Database.Charset != "utf8mb4" {
+		ctx.Data["Err_DbCharset"] = true
+		ctx.RenderWithErr(ctx.Tr("install.err_mysql_charset_must_utf8mb4"), tplInstall, form)
+		return false
+	}
+
 	// Check if the user is trying to re-install in an installed database
 	db.UnsetDefaultEngine()
 	defer db.UnsetDefaultEngine()
diff --git a/templates/install.tmpl b/templates/install.tmpl
index 1cd5dcff8bacf..560496e8a38a4 100644
--- a/templates/install.tmpl
+++ b/templates/install.tmpl
@@ -70,7 +70,7 @@
 					</div>
 
 					<div class="gt-hidden" data-db-setting-for="mysql">
-						<div class="inline required field">
+						<div class="inline required field {{if .Err_DbCharset}}error{{end}}">
 							<label>{{.locale.Tr "install.charset"}}</label>
 							<div class="ui selection database type dropdown">
 								<input type="hidden" name="charset" value="{{if .charset}}{{.charset}}{{else}}utf8mb4{{end}}">