PSP currently converts expression blocks like <%=1234%> into servlet code
like this:
res.write(str(1234))
It would be convenient to be able to use a custom function instead of "str".
For example, if I wanted all integers to be formatted like "1,234" I could
do that in a custom function.
There are a few ways to do this. One way is to have PSP use some predefined
method call instead of str():
res.write(self.htForValue(1234))
and in the base class provide:
def htForValue(self, value):
return str(value)
as a default implementation. You could override it in the PSP itself using
a method directive, or in your own base class. (Any other suggestions for
the name of the method?)
Another thought is a special PSP directive that lets you specify the string
conversion function or method (which would still default to str()):
<%@ page formatter="self.htForValue" %>
And a third thought is that you don't actually need to do _anything_ to PSP
to get this to work. All you need to do is assign to str at the top of your
PSP:
<%str = self.htForValue%>
but that seems a bit too sneaky and could break if PSP's implementation
changed to not use str() in the future.
Thoughts?
- Geoff
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