private async Task PrepareModels(int flowId) { Accounts = await _accountQueries.GetAll(); if (flowId > 0) { Categories = await _categoriesQueries.GetFlowCategories(flowId); Products = await _productQueries.GetExpensesFlowProducts(flowId); } else { Categories = new List <CategoryModel>(); Products = new List <ProductModel>(); } Flows = await _expenseFlowQueries.GetAll(true); }