Other than params, the values received in the controller after skipping from the rails front are described.

I think it's probably a controller generated by scaffold, but the singular_params of the controller is a method called the strong parameter, which is defined as the private method in the controller's file.

prevate
def hoge_params
  param.require(:model name).permit(:column 1,:column 2)
end

For example, in the above case, any parameters other than Column 1 and Column 2 specified in permit are ignored when POSTed.

The strong parameter is a feature introduced in rails4 and later to combat vulnerabilities such as mass assignment to prevent malicious parameter manipulation.