I don't think that's the problem. The actual complete function is this:
function tiddlerOfThis (element) {
return
(store.getTiddler(story.findContainingTiddler(element).getAttribute("tiddler")));
}
since that function gets called like so:
<input name=reschedule type=button value="reschedule"
onClick="reschedule(tiddlerOfThis(this))" />
I was trying to make a minimal test case of sorts, by swapping in "this" where
it would end up.
I've tried substituting in different code in the onClick handler; all the
following work, whether they're called by pressing the button on the
formTemplate itself or pressing it on a tiddler that uses the <<formTiddler
...>> macro to use the formTemplate.
alert("test! test!");
alert(this.toString());
alert(tiddlerOfThis(this).toString());
alert(tiddlerOfThis(this).title.toString());
The following works on a derived tiddler, but not on the template tiddler:
alert(tiddlerOfThis(this).data('alertDate').toString());
so does this:
incDate(tiddlerOfThis(this).data('alertDate').toString());
where "incDate" is a function that doesn't actually do anything with the
argument it receives (I have changed a LOT of things around, trying to figure
out what's going on; here is the current code):
function incDate (dateStr) {
var myDate = new Date();
myDate.setDate(myDate.getDate() + 1);
alert(myDate.toString());
}
It *seems like* I could get the effect I need by writing an onClick handler
like the following:
onclick="tiddlerOfThis(this).setData('alertDate', calculatedValue(....));"
where of course calculatedValue() figures out what the new date value should
be, based on the values that are passed to it. But in addition to wanting to
*understand* what I'm doing, it seems to me like splitting up a calculation
that only gets performed in one context into two pieces is ugly, and to be
avoided if possible.
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