PHP Collection::pluck方法代码示例

 public static function combine($type, $files, $compress = false)
 {
     $root = panel::instance()->roots()->assets() . DS . $type;
     $cache = new Media($root . DS . 'panel.' . $type);
     $media = new Collection(array_map(function ($file) use($root) {
         return new Media($root . DS . str_replace('/', DS, $file));
     }, $files));
     // get the max modification date
     $modified = max($media->pluck('modified'));
     if (is_writable($root) and (!$cache->exists() or $cache->modified() < $modified)) {
         $cache->remove();
         $content = '';
         foreach ($media as $asset) {
             $content .= $asset->read() . PHP_EOL;
         }
         if ($compress) {
             $content = static::compress($content);
         }
         f::write($root . DS . 'panel.' . $type, $content);
     }
     if ($cache->exists()) {
         return $type(panel()->urls()->{$type}() . '/panel.' . $type . '?v=' . panel()->version());
     }
     return $type(array_map(function ($item) use($type) {
         return 'panel/assets/' . $type . '/' . $item;
     }, $files));
 }

 public function postStore($id = null)
 {
     // ---------------------------------------- HANDLE REQUEST ----------------------------------------
     // handle id
     if (!is_null($id)) {
         $data = $this->model->findorfail($id);
     } else {
         $data = $this->model->newInstance();
     }
     // ---------------------------------------- CHECK TAG ----------------------------------------
     $tags_in_db = \App\Tag::whereIn('tag', Input::get('tags'))->get();
     if (!$tags_in_db) {
         $tags_in_db = new Collection();
     }
     foreach (Input::get('tags') as $x) {
         if (!$tags_in_db->where('tag', $x)->first()->id) {
             $new_tag = new \App\Tag(['tag' => $x]);
             if (!$new_tag->save()) {
                 dd($new_tag->getErrors());
             }
             $tags_in_db->push($new_tag);
         }
     }
     // ---------------------------------------- HANDLE SAVE ----------------------------------------
     $input = Input::all();
     if (!empty($input['published_at'])) {
         $input['published_at'] = \Carbon\Carbon::createFromFormat('d/m/Y H:i', $input['published_at'])->format('Y-m-d H:i:s');
     } else {
         $input['published_at'] = null;
     }
     unset($input['longlat']);
     $input['tag_ids'] = $tags_in_db->pluck('id')->toArray();
     $data->fill($input);
     if ($data->save()) {
         if (!$this->save_required_images($data, $input)) {
             return redirect()->back()->withInput()->withErrors($data->getErrors());
         }
         return redirect()->route('admin.' . $this->view_name . '.show', ['id' => $data->id])->with('alert_success', '"' . $data->{$data->getNameField()} . '" has been saved successfully');
     } else {
         return redirect()->back()->withInput()->withErrors($data->getErrors());
     }
 }

/**
 * Removed unused items from the admin nav
 */
function app_clean_admin_nav()
{
    global $menu;
    // Use regex to match b/c some items will have numbers suffixed (e.g. Comments 1)
    $remove_titles = array('/Comments/i');
    $items = array_combine(array_keys($menu), Collection::pluck($menu, 0));
    foreach ($items as $id => $title) {
        foreach ($remove_titles as $regex) {
            if (!preg_match($regex, $title)) {
                continue;
            }
            unset($menu[$id]);
            break;
        }
        if (!array_key_exists($id, $menu)) {
            continue;
        }
    }
}

 /**
  * Zippify the arrays. They must have the same number of elements.
  * @param array @arrays
  * @return array
  */
 public static function zippy($arrays)
 {
     foreach ($arrays as $k => $array) {
         $arrays[$k] = array_values($array);
     }
     $out = array();
     $high_keys = array_keys($arrays);
     $keys = array_keys(current($arrays));
     foreach ($keys as $k) {
         $out[] = array_combine($high_keys, Collection::pluck($arrays, $k));
     }
     return $out;
 }