protected function relationshipRules($record, string $field): array
    {
        return collect($this->rules($record))->filter(function ($v, $key) use ($field) {
            return Str::startsWith($key, $field);
        })->all();
    }
protected function relationshipRules($record, string $field): array
    {
        return collect($this->rules($record))->filter(function ($v, $key) use ($field) {
            return Str::startsWith($key, $field);
        })->all();
    }
protected function relationshipRules ( $ record , string $ field ) : array { return collect ( $ this -> rules ( $ record ) ) -> filter ( function ( $ v , $ key ) use ( $ field ) { return Str :: startsWith ( $ key , $ field ) ; } ) -> all ( ) ; }
Get validation rules for a specified relationship field.

@param mixed $record
@param string $field
@return array
Get validation rules for a specified relationship field .