I have a page template that <div> tag to insert another template.
currently I do
<div content="structure here/form.pt">
I rely on the form.pt object to exist in the folder where the template
is called from. This works okay. However, I think it would be wise to
put some kind of error checking in the tal to avoid sending some kind
of exception to the browser.
what I think would be the correct thing is to test if form.pt exists,
if not do insert nothing, otherwise insert it as above.
However I can't seem to locate any tal syntax that lets me do this.
I found tal:condition but haven't found any examples of using a
'exists' type of condition.
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