Rails 5 Not able to store in database

Looking at your logs, it looks like your are submitting two SalesDailyStatusInfo:

{... 'sales_daily_status_info" => { "0" => {"project_id" => ...}, "1" => { "project_id" => ... } } }  

You don't allow those keys in your params sanitizer, hence the Unpermitted parameters: :0, :1. The result is that your don't whitelist any params you submit and the params hash is empty, your model validations fail.

In order for this to work you either need to send only one project at a time or loop through your params to create both SalesDailyStatusInfo.

Add the frontend form code to your question if you need further help.

Hope it helps !