在控制器和樹枝中迭代對象

我在如何顯示我的樹枝symfony2 Web服務中的對象數組時遇到困難。你能幫我嗎，因爲我有一個錯誤代碼。我的問題是我無法在我的樹枝中顯示對象數組。這是我的代碼：在控制器和樹枝中迭代對象

控制器：

public function InfoAction($id) 
    { 
     $client = new Client('https://www.googleapis.com/books/v1'); 
     $request = $client->get('volumes?q=id='.$id); 
     $response = $request->send(); 
     $content = $response->json(); 
     var_dump($content); 
     return $this->render('BooksBookBundle:GoogleBooks:Info.html.twig', array (
      ['items' => $content['items']], 
      ['books' => $content, array(
      new volumeInfo('title', 'authors','publisher'), 
      new SaleInfo('country','saleability'))] 
      )); 

}

的Json字符串我想顯示：

{ 
"kind": "books#volume", 
"id": "8Pr_kLFxciYC", 
"etag": "Eyx8QAfP36s", 
"selfLink": "https://www.googleapis.com/books/v1/volumes/8Pr_kLFxciYC", 
"volumeInfo": { 
    "title": "Flowers For Algernon", 
    "authors": [ 
    "Daniel Keyes" 
    ], 
    "publisher": "Hachette UK", 
    "publishedDate": "2012-11-15", 
    "description": "Charlie Gordon, IQ 68, is a floor sweeper, and the gentle butt of everyone's jokes, until an experiment in the enhancement of human intelligence turns him into a genius. But then Algernon, the mouse whose triumphal experimental tranformation preceded his, fades and dies, and Charlie has to face the possibility that his salvation was only temporary.", 
    "industryIdentifiers": [ 
    { 
    "type": "ISBN_10", 
    "identifier": "0575088494" 
    }, 
    { 
    "type": "ISBN_13", 
    "identifier": "9780575088498" 
    } 
    ], 
    "pageCount": 224, 
    "printedPageCount": 328, 
    "printType": "BOOK", 
    "categories": [ 
    "Fiction/Science Fiction/General" 
    ], 
    "averageRating": 4.0, 
    "ratingsCount": 3081, 
    "contentVersion": "0.1.1.0.preview.2", 
    "imageLinks": { 
    "smallThumbnail": "http://bks7.books.google.co.uk/books?id=8Pr_kLFxciYC&printsec=frontcover&img=1&zoom=5&edge=curl&imgtk=AFLRE71wn80lT4uw3t25Ft3G1PFmGSb21z4aL4ZZDTl9dvDTlCKqKQFCDikPUeFgK6yg9jexlnalsIONz423vhBma2-ywTG9PdQKaCS85Q6RTtdVVORaswE&source=gbs_api", 
    "thumbnail": "http://bks7.books.google.co.uk/books?id=8Pr_kLFxciYC&printsec=frontcover&img=1&zoom=1&edge=curl&imgtk=AFLRE73tDFRwijQ8sfAvU6Zv0jLLX1jXqdYaNWsensdQhfrU32cpemYTpAT25gE_ocYLTK9z5sW6UOBadpWTCR5ay1wTvXjjRRHIpjh6hCeKAibbIWe2wG8&source=gbs_api", 
    "small": "http://bks7.books.google.co.uk/books?id=8Pr_kLFxciYC&printsec=frontcover&img=1&zoom=2&edge=curl&imgtk=AFLRE73T-jlqTcANz-XTotRx99HlpFSDOInRp6nxzUzQskstY09icPjU9lZIrBwLFt3sexPUSxITpgTldQB10xyJbplEMHCDqa9vbN16xXSgxRtUlSsIdYw&source=gbs_api" 
    }, 
    "language": "en", 
    "previewLink": "http://books.google.co.uk/books?id=8Pr_kLFxciYC&hl=&source=gbs_api", 
    "infoLink": "http://books.google.co.uk/books?id=8Pr_kLFxciYC&hl=&source=gbs_api", 
    "canonicalVolumeLink": "http://books.google.co.uk/books/about/Flowers_For_Algernon.html?hl=&id=8Pr_kLFxciYC" 
}, 
"layerInfo": { 
    "layers": [ 
    { 
    "layerId": "geo", 
    "volumeAnnotationsVersion": "4" 
    } 
    ] 
}, 
"saleInfo": { 
    "country": "GB", 
    "saleability": "FOR_SALE", 
    "isEbook": true, 
    "listPrice": { 
    "amount": 4.99, 
    "currencyCode": "GBP" 
    }, 
    "retailPrice": { 
    "amount": 3.99, 
    "currencyCode": "GBP" 
    }, 
    "buyLink": "http://books.google.co.uk/books?id=8Pr_kLFxciYC&hl=&buy=&source=gbs_api", 
    "offers": [ 
    { 
    "finskyOfferType": 1, 
    "listPrice": { 
    "amountInMicros": 4990000.0, 
    "currencyCode": "GBP" 
    }, 
    "retailPrice": { 
    "amountInMicros": 3990000.0, 
    "currencyCode": "GBP" 
    } 
    } 
    ] 
}, 
"accessInfo": { 
    "country": "GB", 
    "viewability": "PARTIAL", 
    "embeddable": true, 
    "publicDomain": false, 
    "textToSpeechPermission": "ALLOWED_FOR_ACCESSIBILITY", 
    "epub": { 
    "isAvailable": true, 
    "acsTokenLink": "http://books.google.co.uk/books/download/Flowers_For_Algernon-sample-epub.acsm?id=8Pr_kLFxciYC&format=epub&output=acs4_fulfillment_token&dl_type=sample&source=gbs_api" 
    }, 
    "pdf": { 
    "isAvailable": false 
    }, 
    "webReaderLink": "http://books.google.co.uk/books/reader?id=8Pr_kLFxciYC&hl=&printsec=frontcover&output=reader&source=gbs_api", 
    "accessViewStatus": "SAMPLE", 
    "quoteSharingAllowed": false 
} 
}

MY嫩枝

{% extends "::base.html.twig" %} 

{% block title %}BooksBookBundle:GoogleBooks:volumes{% endblock %} 

{% block body %} 
    <h1>Book Information</h1> 
    {% for volumeInfo in volumeInfos %} 
    {{ volumeInfo.title }} 
     {% endfor %} 
{% endblock %}

我的var_dump

array (size=3) 
    'kind' => string 'books#volumes' (length=13) 
    'totalItems' => int 1 
    'items' => 
    array (size=1) 
     0 => 
     array (size=8) 
      'kind' => string 'books#volume' (length=12) 
      'id' => string '8Pr_kLFxciYC' (length=12) 
      'etag' => string 'KEN5W2AmaSo' (length=11) 
      'selfLink' => string 'https://www.googleapis.com/books/v1/volumes/8Pr_kLFxciYC' (length=56) 
      'volumeInfo' => 
      array (size=17) 
       ... 
      'saleInfo' => 
      array (size=7) 
       ... 
      'accessInfo' => 
      array (size=10) 
       ... 
      'searchInfo' => 
      array (size=1)

錯誤消息：

ClassNotFoundException: Attempted to load class "volumeInfo" from namespace "Books\BookBundle\Controller" in /Users/prezequias/Desktop/santosbookreview/src/Books/BookBundle/Controller/GoogleBooksController.php line 31. Do you need to "use" it from another namespace?

變量的書籍是由我創造的，也許我錯了。

感謝您的幫助提前

來源

2014-04-16 prezequias

「volumeInfos」變量在哪裏創建？ –

Hi Wouter J，volumeInfo是Google書籍API中的一個對象，我試圖使用它。 https://developers.google.com/books/docs/v1/using#PerformingSearch – prezequias

是否要創建JSON數組並將其轉儲到樹枝文件中，但是您希望該數組不是作爲JSON處理的數組？ – Javad

你嘗試實例化一個PHP類的VolumeInfo，但是這個PHP類不存在！

A液：

控制器：

$items = $content->items; 
return $this->render('BooksBookBundle:GoogleBooks:Info.html.twig', array ('items'=>$items));

模板：

{% for item in items %} 
    Title : {{ item.volumeInfo.title }}<br> 
    Author : 
    {% for author in item.volumeInfo.authors %} 
     {{ item.volumeInfo.authors[0] }} 
    {% endfor %} 
{% endfor %}

或者，如果你總是有1本書，你可以直接將書傳遞給模板：

控制器：

$items = $content->items[0]; 
return $this->render('BooksBookBundle:GoogleBooks:Info.html.twig', array ('item'=>$item));

來源

2014-04-17 07:24:22 griotteau

感謝griotteau，您的幫助來了正確的時間。我仍然唯一的問題是：在一些書中我們描述了其他我們沒有的，而出版商有時也是多個。我怎樣才能在我的樹枝上展示這些？ – prezequias

您可以通過http://twig.sensiolabs.org/doc/tests/index獲得幫助。html 也許可以使用'defined'和'iterable'？ – griotteau

你實際上並沒有經過volumeInfos變量到模板本身，而是要傳遞的「本本」陣列。

嘗試類似：

{% for book in books %} 
    {{ book.volumeInfo['title'] }} // Might not be the right syntax but the idea is to iterate over "books" 
{% endfor %}

我不知道你的書定義，雖然，你看到了什麼錯誤消息？

來源

2014-04-16 17:51:46 np87

我已更新代碼以回答您的問題，謝謝 – prezequias

在控制器和樹枝中迭代對象

回答

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