def delete_by_category(category: str): return j(app.dlog_collection.delete_many(md(category)))
def delete_dlog(pk): return j(app.dlog_collection.delete_by_id(pk))
def delete_data(pk): return j(app.db.data.delete_by_id(pk))
def delete_all_dlogs(): return j(app.dlog_collection.delete_many({}))
def generate_data(): return j(app.data_service.generate_data())