Question

I am working on 1 project and there is 1 form in it where i need validation with appropriate message if validation fails

validation is for format check. I need to check if user enter words with more than 1 space character in it. i mean

if user enter

"hello    world"

then it should show “invalid format”. The correct format should be

"hello world"

I mean only 1 space character is allowed.

I have tried this

validates_format_of :name, :with => /\s/

but it shows error when there is no space character….

Answer 1

Try this:

validates_format_of :name, :without => /\s{2,}/, :message => "invalid format"

Note that \s matches any whitespace characters, which includes newlines, tabs, etc. as well as spaces. If you just want to match two or more spaces (and not two or more whitespace characters), then this would be better:

validates_format_of :name, :without => /\ {2,}/, :message => "invalid format"