Ask Bj?rn Hansen wrote:
> One of them is an idiom like this:
>
> Foo: <% join "--", map { $_->name } $beer->types %><br />
Yes, that would be nice.
> With TT I end up with something like the following to do the same:
>
> [% jobs = [];
> FOR j = company.Jobs;
> str = '<a href="/job/' _ j.ID _ '">' _ j.Title;
> jobs.push(str);
> END %]
> Blah: [% jobs.join(", ") %]<br />
>
> Did I miss something obvious?
Nope, not really, but there is at least one hack which can make like a
little easier. You can define your own MACRO which iterates through a
list, calls a subroutine (passed in as an argument) to format each item,
and then returns the results as a joined string.
[% MACRO mapjoin(list, sub, joint)
BLOCK;
items = [ ];
FOR i = list;
o = sub(i);
items.push(o);
END;
items.join(joint);
END;
%]
Then you define a MACRO which formats each item:
[% MACRO jlink(j)
GET '<a href="/job/' _ j.ID _ '">' _ j.Title;
%]
You need to use the (undocumented) '\' to pass a reference to the jlink
subroutine rather than calling the subroutine and passing the value.
[% mapjoin(company.Jobs, \jlink, ', ') %]
If you don't want to use the undocumented '\' (quite wise as it is likely
to be replaced by something else in TT3), then you could always pass the name
of a template block instead.
[% MACRO mapjoin(list, block, joint)
BLOCK;
items = [ ];
FOR item = list;
out = INCLUDE $block;
items.push(out);
END;
items.join(joint);
END;
%]
[% BLOCK jlink;
'<a href="/job/' _ item.ID _ '">' _ item.Title;
END;
%]
[% mapjoin(company.Jobs, 'jlink', ', ') %]
Or you can do it using a VIEW:
[% VIEW joblinks;
BLOCK hash;
'<a href="/job/' _ item.ID _ '">' _ item.Title;
END;
BLOCK list;
items = [ ];
FOR i = item;
o = view.print(i);
items.push(o);
END;
items.join(', ');
END;
END;
%]
[% joblinks.print(company.Jobs) %]
Or like so:
[% # base class view which knows how to join lists
VIEW listjoin;
BLOCK list;
items = [ ];
FOR i = item;
o = view.print(i);
items.push(o);
END;
items.join(', ');
END;
END;
%]
[% # subclass view which knows how to display hash arrays
VIEW joblinks base=listjoin;
BLOCK hash;
'<a href="/job/' _ item.ID _ '">' _ item.Title;
END;
END;
%]
[% # another subclass view which display hash arrays differently
VIEW joblinkslong base=listjoin;
BLOCK hash;
'<a href="/job/' _ item.ID _ '">' _ item.Title; blah blah
a different block altogether yada yada, etc.
END;
END;
%]
Then chose the appropriate view to print the jobs:
[% joblinks.print(company.Jobs) %]
or
[% joblinkslong.print(company.Jobs) %]
Sorry for the huge answer to a simple question. I guess the simple answer
is that there is no simple answer. :-)
HTH
A
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