fix: nil error if init data is empty (#1247)

object/init_data.go

@@ -56,12 +56,40 @@ func readInitDataFromFile(filePath string) *InitData {
 
 	s := util.ReadStringFromPath(filePath)
 
-	data := &InitData{}
+	data := &InitData{
+		Organizations: []*Organization{},
+		Applications:  []*Application{},
+		Users:         []*User{},
+		Certs:         []*Cert{},
+		Providers:     []*Provider{},
+		Ldaps:         []*Ldap{},
+	}
 	err := util.JsonToStruct(s, data)
 	if err != nil {
 		panic(err)
 	}
 
+	// transform nil slice to empty slice
+	for _, organization := range data.Organizations {
+		if organization.Tags == nil {
+			organization.Tags = []string{}
+		}
+	}
+	for _, application := range data.Applications {
+		if application.Providers == nil {
+			application.Providers = []*ProviderItem{}
+		}
+		if application.SignupItems == nil {
+			application.SignupItems = []*SignupItem{}
+		}
+		if application.GrantTypes == nil {
+			application.GrantTypes = []string{}
+		}
+		if application.RedirectUris == nil {
+			application.RedirectUris = []string{}
+		}
+	}
+
 	return data
 }