Thanks for the prompt response. Looks like according to the book, using 
'username' should be allowed though:
By default, web2py uses email for login. If instead you want to log in 
using username set auth.define_tables(username=True)
Also:
If you add a field called "username", it will be used in place of "email" 
for login. If you do, you will need to add a validator as well:

1.

auth_table.username.requires = IS_NOT_IN_DB(db, auth_table.username)


(from http://web2py.com/books/default/chapter/29/9)

I can add in the functionality into tools.py, if you want.
Thanks

On Thursday, May 31, 2012 1:30:11 PM UTC-7, Massimo Di Pierro wrote:
>
> The email field is required. If you omit it there is nowhere to send 
> lost-password messages.
>
> Anyway. You just need:
>
> auth.define_tables(username=True, signature=False, migrate=False)
>
> You do not need all the code before that line.
>
> On Thursday, 31 May 2012 15:09:39 UTC-5, Osman Masood wrote:
>>
>> Hi,
>> I have a custom table, and I'm trying to use a 'username' field instead 
>> of an 'email' field (since the book says if there's a username field, it 
>> will be used instead of the email field).
>> However, whenever I try the 'forgot my username' function, it gives me an 
>> error, saying:
>> <type 'exceptions.KeyError'> 'email'
>> (Looks like it's trying to access the email field, which of course 
>> doesn't exist.)
>>
>> Here's my code:
>> auth.settings.table_user_name = 'user'
>> db.define_table(auth.settings.table_user_name,
>>     Field('username', length=60, unique=True, label='Email address'), # 
>> required
>>     Field('password', 'password', length=512, writable=False, 
>> readable=False, label='Password'),  # required
>>     Field('registration_key', length=512, writable=False, readable=False, 
>> default=''), # required
>>     Field('reset_password_key', length=512, writable=False, 
>> readable=False, default=''), # required
>>     Field('registration_id', length=512, writable=False, readable=False, 
>> default=''), # required
>>     format='%(username)s')
>>
>> ## do not forget validators
>> custom_auth_table = db[auth.settings.table_user_name] # get the 
>> custom_auth_table
>> custom_auth_table.password.requires = [ CRYPT(key="mykey", 
>> digest_alg="sha512") ]
>> custom_auth_table.username.requires = [ 
>>     IS_EMAIL(error_message=auth.messages.invalid_email),
>>     IS_NOT_IN_DB(db, custom_auth_table.username)]  # we need this so that 
>> web2py uses username as the email address. unique is not good enough
>> auth.settings.table_user = custom_auth_table # tell auth to use 
>> custom_auth_table
>>
>> ## configure auth policy
>> auth.settings.registration_requires_verification = True
>> auth.settings.registration_requires_approval = True
>> auth.settings.reset_password_requires_verification = True
>> auth.messages.verify_email = 'Click on the link http://' + \
>>     request.env.http_host + \
>>     URL(r=request,c='default',f='user',args=['verify_email']) + \
>>     '/%(key)s to verify your email'
>> auth.messages.reset_password = 'Click on the link http://' + \
>>     request.env.http_host + \
>>     URL(r=request,c='default',f='user',args=['reset_password']) + \
>>     '/%(key)s to reset your password'
>>
>> auth.define_tables(username=True, signature=False, migrate=False)
>>
>> ## configure email
>> mail=auth.settings.mailer
>> mail.settings.server = 'smtp.gmail.com:587' or 'logging'
>> mail.settings.sender = '[email protected]'
>> mail.settings.login = '[email protected]:mypass'
>>
>>
>> And here's the error traceback:
>>
>> Traceback (most recent call last):
>>   File "/home/www-data/web2py/gluon/restricted.py", line 205, in restricted
>>     exec ccode in environment
>>   File 
>> "/home/www-data/web2py/applications/Talent_Web/controllers/default.py" 
>> <https://ec2-204-236-184-137.us-west-1.compute.amazonaws.com/admin/default/edit/Talent_Web/controllers/default.py>,
>>  line 73, in <module>
>>   File "/home/www-data/web2py/gluon/globals.py", line 175, in <lambda>
>>     self._caller = lambda f: f()
>>   File 
>> "/home/www-data/web2py/applications/Talent_Web/controllers/default.py" 
>> <https://ec2-204-236-184-137.us-west-1.compute.amazonaws.com/admin/default/edit/Talent_Web/controllers/default.py>,
>>  line 34, in user
>>     return dict(form=auth())
>>   File "/home/www-data/web2py/gluon/tools.py", line 1196, in __call__
>>     return getattr(self,args[0])()
>>   File "/home/www-data/web2py/gluon/tools.py", line 2158, in 
>> retrieve_username
>>     old_requires = table_user.email.requires
>>   File "/home/www-data/web2py/gluon/dal.py", line 7180, in __getattr__
>>     return self[key]
>>   File "/home/www-data/web2py/gluon/dal.py", line 7120, in __getitem__
>>     return dict.__getitem__(self, str(key))
>> KeyError: 'email'
>>
>>

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