I have a form that uses [jQuery datepicker](https://bootstrap-datepicker.readthedocs.io/) for picking just the month and year. 

```
$(".date-input").datepicker({
                  format: 'mm-yyyy', 
                  startView: "months", 
                  minViewMode: "months" 
                });

```

I have postgreSQL db on the backend with datetime column storing this date which apparently needs date in full format 'dd-mm-yyyy' to save it. While POSTing the form to my controller, this is what i came across:

`Experience.update(date_from: '02-2016')` updates the table with nil value for date\_from column

So, the question is how can i append `'01-'` into this date\_from param that i receive from POST request on the controller as Strong parameters.