Forum: Ruby on Rails Validating email

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Sijo k. (Guest)
on 2008-11-07 11:16
Hi
  I have a mailid like removed_email_address@domain.invalid@   As part of email 
validation

 I have to check it removed_email_address@domain.invalid So I did

"removed_email_address@domain.invalid@@".split('@')  So I get ['test','123.com'] 
But if it
were removed_email_address@domain.invalid  the expected validation is correct 
But the lase two @
signs are not recognized by split So how can check that after 123.com
still there is @ sign and declare my validation as failed?

Sijo
Mohit S. (Guest)
on 2008-11-07 11:31
(Received via mailing list)
Sijo Kg wrote:
> Sijo
>
I can't explain why it doesn't recognize but you could add something to
the end of the address and split.

irb(main):014:0> a = 'removed_email_address@domain.invalid@@'
=> "removed_email_address@domain.invalid@@"
irb(main):015:0> a.split('@')
=> ["test", "123.com"]
irb(main):016:0> a = a + 'trash'
=> "removed_email_address@domain.invalid@@trash"
irb(main):017:0> a.split('@')
=> ["test", "123.com", "", "trash"]
irb(main):018:0>

Hope this helps.

Cheers,
Mohit.
11/7/2008 | 5:29 PM.
Sijo k. (Guest)
on 2008-11-07 11:39
Hi
   This is not the required solution Suppose the user enters
removed_email_address@domain.invalid@@ or removed_email_address@domain.invalid@ 
what happens?  Since we  cant insists
that there should be value after @  or @@

Thanks
Sijo
Mikel L. (Guest)
on 2008-11-07 12:02
(Received via mailing list)
On Fri, Nov 7, 2008 at 8:39 PM, Sijo Kg
<removed_email_address@domain.invalid>
 wrote:

>
> Hi
>   This is not the required solution Suppose the user enters
> removed_email_address@domain.invalid@@ or removed_email_address@domain.invalid@ what 
happens?  Since we  cant insists
> that there should be value after @  or @@


Use tmail to validate your email :)
It will raise an exception on basically anything except a correct
address.

And I would recommend not using an '@' symbol to symbolize anything in
an
email address. It is the key component that separates the local from the
domain part of the email address and you will always run into problems.

You can see how here:

http://www.lindsaar.net/2008/4/14/tip-4-detecting-...

>> require 'tmail'
=> true
>> TMail::Address.parse('removed_email_address@domain.invalid@@')
TMail::SyntaxError: parse error on token "@"
from parser.y:379:in `on_error'
from (irb):2:in `_racc_yyparse_c'
from parser.y:375:in `scan'
from parser.y:375:in `parse_in'
from racc/parser.rb:152:in `_racc_yyparse_c'
from racc/parser.rb:152:in `__send__'
from racc/parser.rb:152:in `yyparse'
from parser.y:366:in `parse'
from parser.y:344:in `parse'
from
/Library/Ruby/Gems/1.8/gems/tmail-1.2.3.1/lib/tmail/address.rb:84:in
`parse'
from (irb):2
>> TMail::Address.parse('removed_email_address@domain.invalid@')
TMail::SyntaxError: parse error on token "@"
from parser.y:379:in `on_error'
from (irb):3:in `_racc_yyparse_c'
from parser.y:375:in `scan'
from parser.y:375:in `parse_in'
from racc/parser.rb:152:in `_racc_yyparse_c'
from racc/parser.rb:152:in `__send__'
from racc/parser.rb:152:in `yyparse'
from parser.y:366:in `parse'
from parser.y:344:in `parse'
from
/Library/Ruby/Gems/1.8/gems/tmail-1.2.3.1/lib/tmail/address.rb:84:in
`parse'
from (irb):3
>> TMail::Address.parse('removed_email_address@domain.invalid')
=> #<TMail::Address removed_email_address@domain.invalid>


--
http://lindsaar.net/
Rails, RSpec and Life blog....
Sijo k. (Guest)
on 2008-11-07 12:16
Hi
    Thanks for the reply..But when i tried from script/console reslut
was like

TMail::Address.parse('removed_email_address@domain.invalid@')
=> #<TMail::Address removed_email_address@domain.invalid@>
>> TMail::Address.parse('removed_email_address@domain.invalid@@')
=> #<TMail::Address removed_email_address@domain.invalid@>

             Why this happens?

Sijo
Mikel L. (Guest)
on 2008-11-14 06:03
(Received via mailing list)
On Fri, Nov 7, 2008 at 9:16 PM, Sijo Kg
<removed_email_address@domain.invalid>wrote:

>    Thanks for the reply..But when i tried from script/console reslut
> was like
>
> TMail::Address.parse('removed_email_address@domain.invalid@')
> => #<TMail::Address removed_email_address@domain.invalid@>
> >> TMail::Address.parse('removed_email_address@domain.invalid@@')
> => #<TMail::Address removed_email_address@domain.invalid@>
>

What version of TMail is that?

>> TMail::VERSION::STRING
=> "1.2.3"

Mikel
Craig D. (Guest)
on 2008-11-14 06:15
(Received via mailing list)
In my current project, I'm using the regexp from
http://www.regular-expressions.info/email.html with validates_format_of
to
validate email addresses.

Regards,
Craig
Sijo k. (Guest)
on 2008-11-14 06:29
Hi

When in console typed
TMail::VERSION::STRING
 I got error

NameError: uninitialized constant TMail

     So wont Tmail be installed as part of Rails?

Sijo
Jodi S. (Guest)
on 2008-11-14 15:51
(Received via mailing list)
Hey yo -

On 13-Nov-08, at 11:14 PM, Craig D. wrote:

> In my current project, I'm using the regexp from 
http://www.regular-expressions.info/email.html
>  with validates_format_of to validate email addresses.
>
> Regards,
> Craig


Checked out this baby?

http://ex-parrot.com/~pdw/Mail-RFC822-Address.html

(I'm using something similar to Craig's - wonder if the above would
crack open a bug in ruby's regexp?

J
Jeff E. (Guest)
on 2008-11-14 16:22
(Received via mailing list)
Another contender... I use this one:

http://tfletcher.com/lib/rfc822.rb

usage:  validates_format_of :email, :with => RFC822::EmailAddress
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