Question

我正在尝试通过以下代码获取与类别相关的视频博客，但在 var_dump 中却什么也没得到？我想获取与类别相关的视频：

 $category = VideoBlogCategoryModel::findFirst(1); // This returns category successfully and there are many video   blogs having this category linked
    var_dump($category->getVideoBlogs());exit;

VideoBlogModel.php

public function initialize(){

    // Run base initialize code
    parent::initialize();

    // Configure Relation with VideoBlogCategoryModel
    $this->belongsTo('category_id', VideoBlogCategoryModel::class, 'id', array(
        'alias' => 'videoCategory',
        'foreignKey' => true
    ));
}
public function getVideoCategory(){
    return $this->videoCategory;
}

public function setVideoCategory($videoCategory){
    $this->videoCategory = $videoCategory;
}

VideoBlogCategoryModel.php

public function initialize(){

    // Run base initialize code
    parent::initialize();

    // Configure relation with VideoBlogModel
    $this->hasMany('id', VideoBlogModel::class, 'category_id', array(
        'alias' => 'videoBlogs',
        'foreignKey' => true,
        'cxAction' => static::ACTION_CASCADE_DELETE
    ));
}
   public function getVideoBlogs(){
    return $this->videoBlogs;
}

public function setVideoBlogs($videoBlogs){
    $this->videoBlogs = $videoBlogs;
}

如果需要其他条件，请与我分享。

Answer 1

在VideoBlogCategoryModel.php中进行更改

public function getVideoBlogs() {
   return $this->videoBlogs;
}

到

public function getVideoBlogs() {
   return $this->getRelated('videoBlogs');
}

然后尝试按以下方式访问它：

$category = VideoBlogCategoryModel::findFirst(1); 
$videos = $category->getVideoBlogs();

foreach( $videos as $video ) { 
  // access data here
  var_dump($video->anyProperty()); // e.g $video->getId()
}

Answer 2

你可以尝试

$category = VideoBlogCategoryModel::findFirst(1);
$videos = $category->getVideoBlogs();
var_dump($videos->count());
var_dump($videos->toArray());
exit;

我认为将var_dump用于Phalcon收集对象不是一个好主意，您可以将其转换为Array和Var_dump

希望它可以为您提供帮助

Answer 3

或尝试：

$categories = VideoBlogCategoryModel::findById($id);

类别没有获得相关的视频博客？

3 个答案: