CODEWITHSUNDEEP
pythondjangogoogle-app-engine
a.m.
a.m.

Reputation: 2198

Cant seem to find how to check for valid emails in App Engine

any one know where any docs might be about this? So far I've only found this

http://code.google.com/appengine/articles/djangoforms.html

EmailProperty() only validates for empty strings... sigh

Upvotes: 3

Views: 1454

Answers (2)

Pylinux
Pylinux

Reputation: 11816

If you check the source for Google's mail function you'll see that mail.is_email_valid() only checks that the string is not None/empty.

From this site I found an RFC822 compliant Python email address validator.

import re

qtext = '[^\\x0d\\x22\\x5c\\x80-\\xff]'
dtext = '[^\\x0d\\x5b-\\x5d\\x80-\\xff]'
atom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+'
quoted_pair = '\\x5c[\\x00-\\x7f]'
domain_literal = "\\x5b(?:%s|%s)*\\x5d" % (dtext, quoted_pair)
quoted_string = "\\x22(?:%s|%s)*\\x22" % (qtext, quoted_pair)
domain_ref = atom
sub_domain = "(?:%s|%s)" % (domain_ref, domain_literal)
word = "(?:%s|%s)" % (atom, quoted_string)
domain = "%s(?:\\x2e%s)*" % (sub_domain, sub_domain)
local_part = "%s(?:\\x2e%s)*" % (word, word)
addr_spec = "%s\\x40%s" % (local_part, domain)


email_address = re.compile('\A%s\Z' % addr_spec)
# How this is used: 
def isValidEmailAddress(email):
    if email_address.match(email):
        return True
    else:
        return False

* If you use this please use this version as it contains the name and so on of the person whom created it.

Upvotes: 3

jonmiddleton
jonmiddleton

Reputation: 1128

The following validates the email address on the server:

from google.appengine.api import mail
if not mail.is_email_valid(to_addr):
  # Return an error message...

Hope that helps?

Upvotes: 5

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