Re: template toolkit .. one more kwestion solved
On Mon, 29 Jan 2001, you wrote:
Sounds like your dereferencing function may be returning a SCALAR instead
of an ARRAY when there's only one result?
could be ... I had :
my($data)=$sth-fetchall_arrayref;
return @{$data};
which I thought should return a flat list of references to arrays ... ??
nope?
so .. after a quick fiddle ..
It seem T::T automagically assumes that if you pass it a reference to
something then you probably didn;t want that, you prolly wanted the thingy
itself so it dereferences it for you.. it will only do this down one
level.
so by passing it a list of references it sees a list .. does a foreach
down them and then sees what it gets (in this case an array ref ) .. it
dereferences that and bingo you can now access the row of stuff.
however when the list jsut contains 1 item, it sees a reference to an
array ( whicj is the row) and then proceeds to do a foreach over the
elements of the row ..
by simply not passing it the thing in list format but passing the plain
reference (ie return $data instead of @{$data}) it always gets an arrayref
and works for both cases of 1 or n items in the array.
solved .. it just took me a while to twig what was going on.
--
Robin Szemeti
The box said "requires windows 95 or better"
So I installed Linux!
Re: template toolkit .. one more kwestion solved
On Mon, Jan 29, 2001 at 05:31:52PM +0100, Philip Newton wrote:
Reminds me of fits I had when doing Vignette/Tcl with lists of lists that I
passed to another template with HTTP POST. When the list of lists contained
only one element, it didn't wrap that list in extra {} so the foreach say a
list of lists all right -- but the "sublists" were only one element long
(since {} are optional around lists if there are not spaces). Caused me a
Try creating a JavaScript array of length one whose first
element is initialised to 1. Aaargh. [1]
Paul
[1]
# These numbers get turned into a JavaScript array later on that
# looks like new Array (1,1,0); Owing to JavaScript1.0 braindeadedness
# new Array (1) is interpreted as "created a one element list" not
# "create a one element list with [0]=1". However this is achievable
# if the number is given as a string like new Array("1");
@time_names = sort {$a = $b} keys %time_names;
foreach my $i_list (keys %time_cache) {
$time_cache{$i_list} =
join ',', map {$time_cache{$i_list}{$_} ? 1 : 0} @time_names;
$time_cache{$i_list} =~ s/^(.)$/"$1"/;
}
