Laravel 5 Validation Trim

Question

I am a beginner in Laravel 5.

How can I remove whitespaces in validator?? i have read the documentation but there is no validator for trim(remove whitespaces).

Answer 1

$data = $r->all();
foreach ($data as $key => $value) {
if($value!=""){ //If your primaryKey id is autoincrement
   $data[$key] = preg_replace('/\s{2,}/',' ',$value);
}
}
$variable = new modelName($data);
$variable->save();

//Here Parameter Explaination
 => '/\s{2,}/' Pattern must write between '/ /' and \s{2,} means 2 or more than 2 spaces sholud be trim
 => ' ' second parameter is with. Means 1st parameter replace with 2nd parameter(here, one space)
 => $value is variable which is trim