2 files changed, 36 insertions, 0 deletions
diff --git a/models/migrations/migrations.go b/models/migrations/migrations.go
index 432717c7..7e700f49 100644
--- a/models/migrations/migrations.go
+++ b/models/migrations/migrations.go
@@ -64,6 +64,8 @@ var migrations = []Migration{
 	NewMigration("update repository sizes", updateRepositorySizes),
 	// v16 -> v17:v0.10.31
 	NewMigration("remove invalid protect branch whitelist", removeInvalidProtectBranchWhitelist),
+	// v17 -> v18:v0.11.48
+	NewMigration("store long text in repository description field", updateRepositoryDescriptionField),
 }
 
 // Migrate database to current version
diff --git a/models/migrations/v18.go b/models/migrations/v18.go
new file mode 100644
index 00000000..086cd27a
--- /dev/null
+++ b/models/migrations/v18.go
@@ -0,0 +1,34 @@
+// Copyright 2018 The Gogs 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 (
+	"fmt"
+
+	"github.com/go-xorm/xorm"
+
+	"github.com/gogs/gogs/pkg/setting"
+)
+
+func updateRepositoryDescriptionField(x *xorm.Engine) error {
+	exist, err := x.IsTableExist("repository")
+	if err != nil {
+		return fmt.Errorf("IsTableExist: %v", err)
+	} else if !exist {
+		return nil
+	}
+	switch {
+		case setting.UseMySQL:
+			_, err = x.Exec("ALTER TABLE `repository` MODIFY `description` VARCHAR(512);")
+		case setting.UseMSSQL:
+			_, err = x.Exec("ALTER TABLE `repository` ALTER COLUMN `description` VARCHAR(512);")
+		case setting.UsePostgreSQL:
+			_, err = x.Exec("ALTER TABLE `repository` ALTER COLUMN `description` TYPE VARCHAR(512);")
+		case setting.UseSQLite3:
+			// Sqlite3 uses TEXT type by default for any string type field.
+			// Keep this comment to mention that we don't missed any option.
+	}
+	return err
+}