- Fix failure when trying to save empty labels

- Update README

README.md

@@ -16,7 +16,10 @@ An open-source, user-friendly app for managing tasks and chores, featuring custo
 Release binary included everything needed to be up and running, as even the frontend file served 
 ### Using Docker run :
 1. pull the latest image using: `docker pull donetick/donetick`
-2. run the container `DT_ENV=selfhosted docker run -v /path/to/host/data:/usr/src/app/data -p 2021:2021 donetick/donetick`
+2. run the container and replace `/path/to/host/data` with where you want to place attach the volumne for the sqlite db `DT_ENV=selfhosted DT_SQLITE_PATH=/donetick-data/donetick.db docker run -v /path/to/host/data:/donetick-data -p 2021:2021 donetick/donetick`
+
+
+
 
 
 ### Using Docker Compose:
@@ -30,10 +33,11 @@ services:
     ports:
       - 2021:2021 # needed for serving backend and frontend
     volumes:
-      - ./data:/usr/src/app/data # database file stored (sqlite database)
+      - ./data:/donetick-data # database file stored (sqlite database)
       - ./config:/config # configration file like selfhosted.yaml
     environment:
       - DT_ENV=selfhosted # this tell donetick to load ./config/selfhosted.yaml for the configuration file
+      - DT_SQLITE_PATH=/donetick-data/donetick.db 
 
 ```
 

internal/label/repo/repository.go

@@ -73,17 +73,19 @@ func (r *LabelRepository) AssignLabelsToChore(ctx context.Context, choreID int,
 		})
 	}
 	return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
-
+		if len(toBeRemoved) > 0 {
 			if err := r.db.WithContext(ctx).Where("chore_id = ? AND user_id = ? AND label_id IN (?)", choreID, userID, toBeRemoved).Delete(&chModel.ChoreLabels{}).Error; err != nil {
 				return err
 			}
-
+		}
+		if len(toBeAdded) > 0 {
 			if err := r.db.WithContext(ctx).Clauses(clause.OnConflict{
 				Columns:   []clause.Column{{Name: "chore_id"}, {Name: "label_id"}, {Name: "user_id"}},
 				DoNothing: true,
 			}).Create(&choreLabels).Error; err != nil {
 				return err
 			}
+		}
 		return nil
 	})
 }