So I have this function. It toggles error messages after an AJAX call
for validation. It works fine in prototype 1.5,
but an upgrade to 1.6 has broken it and I have not been able to work
out why.
onFormSuccess : function(transport)
{
var json = transport.responseText.evalJSON(true);
var errors = $H(json.errors);
if (errors.size() > 0) {
this.form.down('.error').show();
errors.each(function(pair) {
this.showError(pair.key, pair.value);
}.bind(this));
}
else {
this.form.submit();
}
}
When the JSON received looks like {"errors":[{"anError":
"aMessage"}]}, errors.size() works which means the errors are
displayed as they are supposed to, but when the json received looks
like {"errors":[]}, then errors.size() falls over as errors is an
undefined object.
Basically, what is the correct way to get the size of the returned
JSON data reliably with Prototype 1.6? $H() does not work when errors
is empty. I know the hash was one of the biggest changes moving to
1.6.. I'd appreciate any light someone can shed on this.
I have tried checking if its null, or its length with no success.
Regards,
laf.
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