Add migration to set IsArchived false if it is null

Fix go-gitea#11824

Signed-off-by: Andrew Thornton <art27@cantab.net>

models/migrations/migrations.go

@@ -214,8 +214,10 @@ var migrations = []Migration{
 	NewMigration("prepend refs/heads/ to issue refs", prependRefsHeadsToIssueRefs),
 	// v140 -> v141
 	NewMigration("Save detected language file size to database instead of percent", fixLanguageStatsToSaveSize),
-	// v141 -> 142
+	// v141 -> v142
 	NewMigration("Add KeepActivityPrivate to User table", addKeepActivityPrivateUserColumn),
+	// v142 -> v143
+	NewMigration("Ensure Repository.IsArchived is not null", setIsArchivedToFalse),
 }
 
 // GetCurrentDBVersion returns the current db version

models/migrations/v142.go

@@ -0,0 +1,22 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package migrations
+
+import (
+	"code.gitea.io/gitea/modules/log"
+	"xorm.io/builder"
+	"xorm.io/xorm"
+)
+
+func setIsArchivedToFalse(x *xorm.Engine) error {
+	type Repository struct {
+		IsArchived bool `xorm:"INDEX"`
+	}
+	count, err := x.Where(builder.IsNull{"is_archived"}).SetExpr("is_archived", false).Update(new(Repository))
+	if err == nil {
+		log.Debug("Updated %d repositories with is_archived IS NULL", count)
+	}
+	return err
+}