[Rails] another select_list question - bad bad booleans

[Craig White]

I have a select list for a boolean column in postgresql

in the 'model' ...
  YES_NO = [
    [ "Yes",    "1" ],
    [ "No",     "0" ]
  ].freeze

in the 'view code' ...

<%= options = [['Accepted?', '']] + Placement::YES_NO
   select("placement", "accepted", options) %>

When creating new records, I can select Yes or No and it writes the
proper value to table.

When I edit existing records, unlike other select list menus which
automatically go to the existing value in the select list, the
'Accepted' list always displays "Accepted?' (the prompt, never the
value) in the pop-up selected list, no doubt because it cannot figure
out the reverse translation of existing column 0's and 1's backwards to
Yes : No logic.

What is the trick to do that?

Thanks

Craig