Rss.php

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<?php

namespace Rsi\Fred\Controller\View;

class Rss extends Xml{

  public $limit = 15;

  public function render(){
    if(!headers_sent()) header('Content-type: application/rss+xml; charset=utf-8');
    $rss = new \SimpleXmlElement('<rss version="2.0" />');
    $this->xmlEncode($channel = $rss->addChild('channel'),$this->channel);
    foreach($this->items as $item) $this->xmlEncode($channel->addChild('item'),$item);
    print($rss->asXML());
  }

  protected function getChannel(){
    return [
      'title' => $this->title,
      'link' => \Rsi\Http::host(true) . $this->_controller->route(),
      'copyright' => \Rsi\Http::host(),
      'pubDate' => date('r'),
      'generator' => 'FRED™ RSS view'
    ];
  }

  protected function getItems(){
    $html = $this->_fred->html;
    $items = [];
    foreach($this->_controller->widgets as $widget) if($widget instanceof \Rsi\Fred\Controller\Widget\Table){
      $title = $date = null;
      $captions = [];
      foreach($widget->columns as $column => $config){
        $captions[$column] = $widget->columnCaption($column);
        if(!$title && !($config['format'] ?? null)) $title = $column;
        if(!$date && (substr($config['format'] ?? null,0,4) == 'date')) $date = $column;
      }
      $widget->searchParams($search,$order);
      foreach($widget->provider->search($search,$order,$widget->params,0,$this->limit) as $record){
        $table = '';
        foreach($captions as $column => $caption) $table .= $html->tr($html->_th($caption) . $html->_td($record[$column]));
        $item = ['guid' => md5(implode('|',$record)),'description' => $html->table($table)];
        if($title) $item['title'] = $record[$title];
        if($date) $item['pubDate'] = date('r',strtotime($record[$date]));
        $items[] = $item;
      }
      break;
    }
    return $items;
  }

}