This function first gets values from mapped fields and then check these values against Mollom web service and then notify callback object with the spam checking result.
Signature
public function validate(
$validator )
Parameters
$validator
—
Returns
boolean
- true when Mollom confirms that the submission is ham (not spam) - false when Mollom confirms that the submission is spam
- false when Mollom say 'unsure'.
In this case, 'mollom_captcha_requested' session is set to true
so that Field() knows it's time to display captcha