Illuminate\Database\Eloquent\Builder::orWhere PHP Method

    public function orWhere($column, $operator = null, $value = null)
    {
        return $this->where($column, $operator, $value, 'or');
    }

 private function applyFilters(Builder $query, $expression, $value, $multiple = false)
 {
     $equalsFilter = false;
     $field = null;
     $filter = explode(":", $expression);
     // filter[field:filter]=value
     if (count($filter) == 2) {
         $field = $filter[0];
         $filter = $filter[1];
     } else {
         $equalsFilter = true;
         $field = $expression;
     }
     // filter[field]=value
     if ($equalsFilter) {
         $multiple ? $query->orWhere($field, '=', $value) : $query->where($field, '=', $value);
     }
     // filter[field:between]=A,B
     if ($this->isBetweenFilter($filter)) {
         $betweenValues = $this->getBetweenValues($value);
         if (count($betweenValues) != 2) {
             throw new BadRequestHttpException("Please specify two numbers to filter between");
         }
         $multiple ? $query->orWhereBetween($field, $betweenValues) : $query->whereBetween($field, $betweenValues);
     }
     // filter[field:[after, before, greater_than, less_than]]=value
     if ($this->isComparisonFilter($filter)) {
         if ($this->isDateFilter($field)) {
             $value = Carbon::createFromTimestamp($value);
         }
         $comparisonFilter = $this->getComparisonFilter($filter);
         $multiple ? $query->orWhere($field, $comparisonFilter, $value) : $query->where($field, $comparisonFilter, $value);
     }
     // filter[field:[contains, ends_with, starts_with]]=value
     if ($this->isWildcardFilter($filter)) {
         $value = $this->getLikeWildcard($filter, $value);
         $multiple ? $query->orWere($field, 'like', $value) : $query->where($field, 'like', $value);
     }
     // filter[field:trashed]=true
     if ($this->isTrashedFilter($field)) {
         $query->onlyTrashed();
     }
 }