Rails - Jan 2006 - validates_format_of > Invalid regular expression with simple pattern

Hello,

I try this :

validates_format_of :name , :with => /^[A-z0-9_.- ]*$/ , :message => 
"bad characters"

for accept any name with chars "A" to "z" , "0" to
"9" , with "_" "."
"-" and " "

The pattern is really simple but I have this error :


  SyntaxError in Login#register

./script/../config/../app/models/user.rb:6: invalid regular expression:
/^[A-z0-9_.- ]*$/



This is strange. I forgot something ?

On Jan 20, 2006, at 10:52 AM, oo00oo wrote:
> Hello,
>
> I try this :
>
> validates_format_of :name , :with => /^[A-z0-9_.- ]*$/ , :message  
> => "bad characters"
>
> for accept any name with chars "A" to "z" ,
"0" to "9" , with "_"
> "." "-" and " "
>
> The pattern is really simple but I have this error :
>
>
>  SyntaxError in Login#register
>
> ./script/../config/../app/models/user.rb:6: invalid regular  
> expression: /^[A-z0-9_.- ]*$/
>
>
>
> This is strange. I forgot something ?
>
>
>
>
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>
Try this regex instead:

/^[a-zA-Z0-9_.-]*$/

Cheers-

-Ezra Zygmuntowicz
WebMaster
Yakima Herald-Republic Newspaper
ezra@yakima-herald.com
509-577-7732

At 1/20/2006 01:52 PM, you wrote:
>Hello,
>
>I try this :
>
>validates_format_of :name , :with => /^[A-z0-9_.- ]*$/ , :message => 
>"bad characters"
>
>for accept any name with chars "A" to "z" ,
"0" to "9" , with "_"
>"." "-" and " "
>
>The pattern is really simple but I have this error :
>
>
>  SyntaxError in Login#register
>
>./script/../config/../app/models/user.rb:6: invalid regular 
>expression: /^[A-z0-9_.- ]*$/
>
>
>
>This is strange. I forgot something ?

You can''t have [.- ] because that looks like the range from
''.'' to ''
'' and space is lower than full-stop.

Try:   /^[A-z0-9 _.-]*$/ or (as someone suggested: /^[A-Za-z0-9 
_.-]*$/ if you didn''t intend [ (0x5B), \ (0x5C), ] (0x5D), ^ (0x5E), 
_ (0x5F), and ` (0x60) to be included between Z and a)

-Rob

In other words, if you want your regular expression to match a hypen, it 
must be the first or the last character within the []:

/^[A-z0-9_. -]*$/
/^[-A-z0-9_. ]*$/

Also, are you sure you want the * quantifier, as this will also match 
the empty string. Using + may be what you are looking for in this case.

/^[-A-z0-9_. ]+$/

Cheers,

Bob


Rob Biedenharn wrote:
> At 1/20/2006 01:52 PM, you wrote:
>>The pattern is really simple but I have this error :
>>
>>
>>  SyntaxError in Login#register
>>
>>./script/../config/../app/models/user.rb:6: invalid regular 
>>expression: /^[A-z0-9_.- ]*$/
>>
>>
>>
>>This is strange. I forgot something ?
> 
> 
> You can''t have [.- ] because that looks like the range from
''.'' to ''
> '' and space is lower than full-stop.
> 
> Try:   /^[A-z0-9 _.-]*$/ or (as someone suggested: /^[A-Za-z0-9
> _.-]*$/ if you didn''t intend [ (0x5B), \ (0x5C), ] (0x5D), ^
(0x5E),
> _ (0x5F), and ` (0x60) to be included between Z and a)
> 
> -Rob

-- 
Posted via http://www.ruby-forum.com/.

Oh yes from "." to " ", I understand my mistake.
I also use + instead *
Thanks to all !
:)
> In other words, if you want your regular expression to match a hypen, it 
> must be the first or the last character within the []:
>
> /^[A-z0-9_. -]*$/
> /^[-A-z0-9_. ]*$/
>
> Also, are you sure you want the * quantifier, as this will also match 
> the empty string. Using + may be what you are looking for in this case.
>
> /^[-A-z0-9_. ]+$/
>
> Cheers,
>
> Bob
>