5
我在MongoDB中有一個文檔,我試圖在PHP中展開它。我想展開一個包含其他子文檔的子文檔的文檔。如果文檔只包含字符串和數字,我可以成功完成此操作,但如果它包含另一個子文檔,則無法使其工作。我得到這個錯誤:Mongodb展開嵌套文檔
exception: $unwind: value at end of field path must be an array
你不能展開包含另一級別的子文檔的子文檔嗎?如果不是,你會如何去做這件事?
在此先感謝!
這是查詢:
$project = array(
'$project' => array(
'_id' => 1,
'items' => 1,
)
);
$unwind = array(
'$unwind' => '$items'
);
$query = $mongo->store->aggregate($project,$unwind_items);
這是結構:
{
"_id": {
"$oid": "526fdc1fd6b0a8182300009c"
},
"items": [
{
"quantity": "1",
"category_id": {
"$oid": "526fdc1fd6b0a81823000029"
},
"category": "test",
"images": [
{
"name": "9by9easy.PNG",
"path": "upload_files/nibh-vulputate-mauris-corporation/",
"file_path": "upload_files/nibh-vulputate-mauris-corporation/68e7c50bde1476e96ca2461dc553cce5528fb70e41b1f.PNG",
"size": 8761
},
{
"name": "9by9hard.PNG",
"path": "upload_files/nibh-vulputate-mauris-corporation/",
"file_path": "upload_files/nibh-vulputate-mauris-corporation/8cd2dcf4fcd476262db2eba3fdb2c39a528fb70e42757.PNG",
"size": 11506
}
],
"link": "fghfhfhfg"
}
],
"name": "Nibh Vulputate Mauris Corporation",
}
PS有一個以上的項目。主要的一點是你可以放鬆和有一個子文件的子文檔 –