Question

下面的代码包含两个架构现在Grocery Schema包含用户数组，我想在其中存储与itemName相关的所有用户ID 我不知道如何在mongodb中插入新值

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

var GrocerySchema= new Schema({
itemName: {
    type: String,
    required: true,
    unique: true
},
completed: Boolean,
  date: String,
 users:[{user_id:{type:Schema.Types.ObjectId,ref:user}}]
});

grocerydata=mongoose.model('grocery',GrocerySchema);
var UserSchema = new Schema({

      fname: {
       type:String,
       required:true
       },
     lname:{type:String},

     email: {
      type: String,
      unique: true,
      required: true
    },
    password: {
      type: String,
      required: true
     }
});
 module.exports = mongoose.model('User', UserSchema);

我使用下面的代码来保存多个值并设置数组的值

    var docs=    {
    itemName : req.body.item,
    completed: true,
    date: new Date(),
    $push: {"users": {user_id: req.body._id}}
    }

    }

     grocerydata.create(docs, function(err, results) {
      if (err)
        res.send(err);
      console.log(results);
   });

但是我无法在grocery中推送user_id请帮助我在此先感谢!!

Answer 1

您最后一段代码中有错误。 var docs应该是以下内容：

var docs={
  itemName : req.body.item,
  completed: true,
  date: new Date(),
  //you forgot to wrap $push in {}
  {$push: {"users": {user_id: req.body._id}}}
}

Source

在mongoose中在数组中插入新值

1 个答案: