json - 如何将 JSON 数组保存到 mongodb 集合中

Question

我正在尝试将以下数组保存到我在 mongodb 中的文档中

    {"Category_Id":"54c9c206e1f512456ada778b","Sub_category_Id":"54c9c24ee1f512456ada778d",
 "features":[{"specification_field_type":"textbox","specification_name":"color","_id":"551e5f2e3bbe4691142bdeba","__v":0,"$$hashKey":"object:95"},
             {"specification_field_type":"textbox","specification_name":"Call Features","_id":"551e616d3bbe4691142bdebf","__v":0,"$$hashKey":"object:97"}]}

这是我的 node.js 代码，用于将帖子值保存在 mongodb

var Category_Id = req.body.Category_Id;
var Sub_category_Id = req.body.Sub_category_Id;
        var features = req.body.features;
var property =new db.properties();
            property.Category_Id = Category_Id;
            property.Sub_category_Id = Sub_category_Id;
            property.features = features;

property.save(function (err){
                            var message = JSON.parse('{"status":"success","message":"Features added"}');
                            return res.send(200, message);
    }

虽然执行了查询，但是features信息是这样保存的

集合架构是

var properties = new Schema({
    Category_Id : { type: String},
    Sub_category_Id : { type: String},
    features : { type: String}      
});

谁能帮我解决这个问题。谢谢。

Answer 1

您似乎将 features 声明为架构中的字符串，而不是子文档数组。因此，Mongoose 在保存之前将数组从 req.body 转换为字符串。对您的模式进行以下调整应该会让您走上正确的轨道:

var properties = new Schema({
  Category_Id : { type: String},
  Sub_category_Id : { type: String},
  features : [{
    specification_field_type": String,
    specification_name: String
    // any other paths for features
  }]      
});