From: "Jianping Zhu" <jzhu@fisher.forestry.uga.edu>
  

The situation is that i want user to register. and i want to check the
user-provid email address format.


<dtml if "email=='' or.....">

how can I check the email format?
    

Create an external method with the following code:

import re

def isEmail(value):

  p =
re.compile(r"(([\'a-zA-Z0-9\_-])*\.)*([\'a-zA-Z0-9\_-])+@([a-zA-Z0-9\_-])+(\
.([a-zA-Z0-9])+)+")
  if p.match(value) :
    return 'Valid'
  else:
    return 'Invalid'


Then you can use dtml to check your email addresses:

<dtml-if  "isEmail(somevar) == 'Valid' ">

where 'somevar' is the form field that captured the email address entered by
the user.

HTH

Jonathan



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