Conditional TSS treats floating point zero as blank

[cj-clx]

It would be nice if the following worked as expect, displaying the value $0.00 instead of leaving the XML unaltered.

<?php
require "vendor/autoload.php";

$xml = '<span>FAILS</span>';

$tss = 'span:[data(foo)!=""]  { content: "$", data(foo); } ';

$data['foo'] = 0.00;

$template = new Transphporm\Builder($xml, $tss);
echo $template->output($data)->body . PHP_EOL;

I have frequent need for this kind of check in my TSS code because the application service classes I'm calling don't always return every data element.

Is there perhaps a work-around I don't know about?

[garrettw]

You would need to run the number through a formatter first, which would convert it to a string.
Take a look at this wiki page: Formatting data

[cj-clx]

My example above was perhaps a bit too limited. The data value is a floating point number in my real application, and my TSS (with my current work-around) looks like this:

/* Do not try to display missing values. */
td span.amount:[data(output.paid_amount)!=""] {
    content: "$", data(output.paid_amount);
    format: decimal 2;
}
/* DO display zero values. */
td span.amount:[data(output.paid_amount)=0] {
    content: "$", data(output.paid_amount);
    format: decimal 2;
}

[TRPB]

In the example above, you're doing the same thing for both situations, 0 and not null. Do you want different behaviour on both null and 0.00?

[cj-clx]

Yes, I think that's the crux of the issue. The API I'm calling returns a numeric currency amount as 0.00 through (say) 9999.99, OR it will not return the currency element at all. When it is zero or other numeric, I want to format it nicely. Otherwise, I don't want to display anything, e.g. thus leaving out a lone $ symbol.

Am I making it clear now?