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

I extended the FormRequest class and overrode the prepareForValidation method which is called before validation happens.

// anything I don't want trimmed here
protected $untrimmable = [];

// replace the request with trimmed request here
protected function prepareForValidation()
{
    return $this->replace($this->trimData($this->all()));
}

// recursively trim the fields in the request here
protected function trimData($data,$keyPrefix = '')
{
    $trimmedFields = array_map(function($value,$field) use ($keyPrefix){
        // if the value is an array handle it as
        // a request array and send along the prefix
        if(is_array($value)){
            return $this->trimData($value,$this->dotIndex($keyPrefix,$field));
        }

        // if the field is not in the specified fields to be
        // left untrimmed
        if(
            !in_array($this->dotIndex($keyPrefix,$field),$this->dontTrim) && 
            !in_array($this->dotIndex($keyPrefix,$field), $this->untrimmable)
        ) {
            return trim((string) $value);
        }

        return $value;

    }, $data,array_keys($data));

    return array_combine(array_keys($data),$trimmedFields);
}

What it does:

1. Replace request with a new one with trimmed inputs
2. Set all fields I don't want trimmed in an untrimmable property.
3. Handles nested inputs with dot notation .

Here's a link to the gist https://gist.github.com/msbrime/336a788c7cced2137bdc7896c1241239