private function isNullable($name)
    {
        //TODO: need update after updating isNullable method of Doctrine\ORM\Mapping\ClassMetadata
        if ($this->metadata->hasField($name)) {
            return method_exists($this->metadata, 'isNullable') && $this->metadata->isNullable($name);
        } else if ($this->metadata->hasAssociation($name) && method_exists($this->metadata, 'getAssociationMapping')) {
            $mapping = $this->metadata->getAssociationMapping($name);

            return false !== $mapping && isset($mapping['nullable']) && $mapping['nullable'];
        }

        return false;
    }
private function isNullable($name)
    {
        //TODO: need update after updating isNullable method of Doctrine\ORM\Mapping\ClassMetadata
        if ($this->metadata->hasField($name)) {
            return method_exists($this->metadata, 'isNullable') && $this->metadata->isNullable($name);
        } else if ($this->metadata->hasAssociation($name) && method_exists($this->metadata, 'getAssociationMapping')) {
            $mapping = $this->metadata->getAssociationMapping($name);

            return false !== $mapping && isset($mapping['nullable']) && $mapping['nullable'];
        }

        return false;
    }
private function isNullable ( $ name ) { //TODO: need update after updating isNullable method of Doctrine\ORM\Mapping\ClassMetadata if ( $ this -> metadata -> hasField ( $ name ) ) { return method_exists ( $ this -> metadata , 'isNullable' ) && $ this -> metadata -> isNullable ( $ name ) ; } else if ( $ this -> metadata -> hasAssociation ( $ name ) && method_exists ( $ this -> metadata , 'getAssociationMapping' ) ) { $ mapping = $ this -> metadata -> getAssociationMapping ( $ name ) ; return false !== $ mapping && isset ( $ mapping [ 'nullable' ] ) && $ mapping [ 'nullable' ] ; } return false ; }
Check the field is nullable

@param $name
@return bool
Check the field is nullable