problem with postgres and boolean

I have postgresql database, as column datatype I'm using json and inside hash I have boolean type. If I use array it stores '0' or '1', but not a boolean, if I use hash {false: "Hide", true: "Show"} and before callback `self.content['value'] = @value == 'true' if  ['true', 'false'].include?(@value)` it saves correctly, but shows as it is null.
