[Templates] Comparing foo.first

[Garrett, Philip (MAN-Corporate)]

Bill Moseley wrote:
> Must be time to quit for the day as this doesn't make sense, and I'm
> sure it's very obvious.
>=20
> I have template code that generates <th> elements based on a passed
> in array.  I set class tag on the <th> to indicate if it's a first,
> middle or last column.
>=20
> So, something like:
>=20
>     FOR column =3D headers;
>=20
>         col_pos =3D column =3D=3D headers.first
>             ? 'first'
>             : column =3D=3D headers.last
>                 ? 'last'
>                 : 'middle';
>=20
>         "<th class=3D'$col_pos'>";
>=20
>         [...]
>=20
> which has been working find.  A added a new page today and noticed
> that the first column was <th class=3D'middle'>.

Maybe you'd be better served by the "loop" variable?  It doesn't depend
on the value in the array, only its position -- which can be useful when
otherwise you'd be comparing references.  Sorry, I know it doesn't tell
you what's wrong, but it works...

[% FOREACH column =3D headers %]
    <th class=3D"[% loop.first ? "first" : loop.last ? "last" : "middle"
%]">
    ...

Philip