Query::add_filter PHP Метод

    function add_filter($field, $operator, $values)
    {
        if (empty($values)) {
            return;
        }
        # values must be an array
        if (!is_array($values)) {
            $values = array($values);
        }
        # check if field is defined as an available filter
        if (array_key_exists($field, $this->available_filters)) {
            $this->filter_options = $this->available_filters[$field];
            # check if operator is allowed for that filter
            #if @@operators_by_filter_type[filter_options[:type]].include? operator
            #  allowed_values = values & ([""] + (filter_options[:values] || []).collect {|val| val[1]})
            #  filters[field] = {:operator => operator, :values => allowed_values } if (allowed_values.first and !allowed_values.first.empty?) or ["o", "c", "!*", "*", "t"].include? operator
            #end
            $this->filters[$field] = compact('operator', 'values');
        }
    }