validation woe's

[Gauravbehl1]

hi
I need to validate the user name.it should contain alphanumeic characters and an underscore .
how do we validate a statement which we take from a textbox to have alpnumeric values and spaces...

thanks a lot
gaurav

[sweatje]

something on the order of:

>> def is_good?(name)
>>   return true if name =~ /[a-zA-Z]+_[a-zA-Z]*/
>>   return false
>> end
=> nil
>> is_good? "badname"
=> false
>> is_good? "good_name"
=> true

perhaps?

[Gauravbehl1]

Thanks a lot its working good

[xmitchx]

You might want to look at this, it'd be better:
http://api.rubyonrails.org/classes/A...s.html#M000659

Useing this code in your model:

validates_format_of :name, :with => /[a-zA-Z]+_[a-zA-Z]*/

If you're using a model, that is.