From 334c015f81de19d34093a79ed27545afad5e1095 Mon Sep 17 00:00:00 2001
From: Anthony Lapenna <anthony.lapenna@portainer.io>
Date: Mon, 25 May 2020 18:10:02 +1200
Subject: [PATCH] fix(bolt): migrate empty templates URL settings (#3856)

---
 api/bolt/migrator/migrate_dbversion23.go | 18 ++++++++++++++++++
 api/bolt/migrator/migrator.go            |  8 ++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 api/bolt/migrator/migrate_dbversion23.go

diff --git a/api/bolt/migrator/migrate_dbversion23.go b/api/bolt/migrator/migrate_dbversion23.go
new file mode 100644
index 000000000..2688eecd5
--- /dev/null
+++ b/api/bolt/migrator/migrate_dbversion23.go
@@ -0,0 +1,18 @@
+package migrator
+
+import portainer "github.com/portainer/portainer/api"
+
+func (m *Migrator) updateSettingsToDB24() error {
+	legacySettings, err := m.settingsService.Settings()
+	if err != nil {
+		return err
+	}
+
+	if legacySettings.TemplatesURL == "" {
+		legacySettings.TemplatesURL = portainer.DefaultTemplatesURL
+
+		return m.settingsService.UpdateSettings(legacySettings)
+	}
+
+	return nil
+}
diff --git a/api/bolt/migrator/migrator.go b/api/bolt/migrator/migrator.go
index 0f72997fd..ed84b52e5 100644
--- a/api/bolt/migrator/migrator.go
+++ b/api/bolt/migrator/migrator.go
@@ -320,5 +320,13 @@ func (m *Migrator) Migrate() error {
 		}
 	}
 
+	// Portainer 2.0
+	if m.currentDBVersion < 24 {
+		err := m.updateSettingsToDB24()
+		if err != nil {
+			return err
+		}
+	}
+
 	return m.versionService.StoreDBVersion(portainer.DBVersion)
 }