是否可以在MongoDB中插入和使用JSON格式的javascript变量?

时间:2013-09-01 15:42:30

标签: php javascript jquery json mongodb

我正在尝试格式化一个巨大的js文件,所以我可以将它插入一个MongoDB集合并通过AJAX读取它,但我的语法有问题。它是这样的:

var MyVariable1 = [ { 
  ThingsToGet: [ 
  { 
     first_thing: "SOMETHING ONE",
     second_thing: [[1, 0], [2, 0], [3, 4], [4, 4], [5, "x"], [6, "x"]]
     third_thing: 0,
     fourth_thing: []
     },{ 
     first_thing: "SOMETHING TWO",
     second_thing: [[1, 0], [2, 5], [3, 4], [4, 4], [5, "x"], [6, "x"]],
     third_thing: 0,
     fourth_thing: []
     },{ 
     first_thing: "SOMETHING THREE",
     second_thing: [[1, 0], [2, 0], [3, 4], [4, 4], [5, 2], [6, 2]],
     third_thing: 0,
     fourth_thing: []
     },
   ]
   }
 ];


 var MyVariable2 = [ { 
     ThingsToGet: [ etc, etc, etc...

我打算用PHP查询它:

$variable_to_send_to_jquery = "MyVariable1";

$filter = array(
    'var'=>"MyVariable1";
);


$results = $collection->findone($filter);

1 个答案:

答案 0 :(得分:1)

我建议如果这是一次性的事情,你得到Node.JS安装并使用如下代码,如果你有很多预先存在的JSON类文件要加载(你有的语法)实际上是JavaScript)。虽然我不理解你的数据模型(并且稍微改变了它以便编译),但基本上我所做的只是创建一个包含你添加的所有“变量”数组的变量。

通过将它们放在一个数组中,您可以调用MongoDB的insert方法一次插入一大批文档。回调是文档(设置了_id字段)。如果您有数千个文档,则可能需要使用JavaScript的数组slice将数组拆分为较小的块,这样就不会导致驱动程序超时时出现非常大的insert

var mongo = require('mongodb').MongoClient
    , Server = require('mongodb').Server;

var allVariables = [ {
    ThingsToGet: [
        {
            first_thing: "SOMETHING ONE",
            second_thing: [[1, 0], [2, 0], [3, 4], [4, 4], [5, "x"], [6, "x"]],
            third_thing: 0,
            fourth_thing: []
        },{
            first_thing: "SOMETHING TWO",
            second_thing: [[1, 0], [2, 5], [3, 4], [4, 4], [5, "x"], [6, "x"]],
            third_thing: 0,
            fourth_thing: []
        },{
            first_thing: "SOMETHING THREE",
            second_thing: [[1, 0], [2, 0], [3, 4], [4, 4], [5, 2], [6, 2]],
            third_thing: 0,
            fourth_thing: []
        },
    ]
}
,
    {
        ThingsToGet: [
            {
                first_thing: "SOMETHING ONE",
                second_thing: [[1, 0], [2, 0], [3, 4], [4, 4], [5, "x"], [6, "x"]],
                third_thing: 0,
                fourth_thing: []
            },{
                first_thing: "SOMETHING TWO",
                second_thing: [[1, 0], [2, 5], [3, 4], [4, 4], [5, "x"], [6, "x"]],
                third_thing: 0,
                fourth_thing: []
            },{
                first_thing: "SOMETHING THREE",
                second_thing: [[1, 0], [2, 0], [3, 4], [4, 4], [5, 2], [6, 2]],
                third_thing: 0,
                fourth_thing: []
            },
        ]
    }
];


mongo.connect('mongodb://127.0.0.1:27017/test', function(err, db) {
    if(err) throw err;
    var collection = db.collection('variables');

    // you may want to do them in batches rather than all at once
    collection.insert(allVariables, function(err,docs){
        if(err) throw err;
        if(docs) {
            console.log("Docs inserted: " + docs.length)
            // you could do something here with the docs
        }
    });
});

另一种选择是在PHP中实际使用json-decodedocs)功能来加载JSON,然后使用MongoDB PHP驱动程序插入文档。您需要将JSON文件的语法更改为纯JSON。例如,它不能在文件中包含变量声明。

它可能会是这样的:

$bigJsonFile = file_get_contents('./variables.json', false)
$bigJsonObject = json_decode($json)
$collection->insert($bigJsonObject)