Question

从前端向后端发送数据时出现以下错误

       message:
         'Cast to Array failed for value "[object Object]" at path "tickets"',
        name: 'CastError',
        stringValue: '"[object Object]"',
        kind: 'Array',
        value: '[object Object]',
        path: 'tickets',
        reason: [MongooseError] } },
  _message: 'event validation failed',
  name: 'ValidationError' }

我不认为问题在于模式的设置方式。我认为这是因为我正在将图像发布到后端并使用data.append附加其余数据。这是multer文档建议发送数据的方式。

这是我的功能，用于将数据发送到后端（我删除了其他变量以使其易于阅读）：

createEvent = e => {
    e.preventDefault()

    let data = this.state.userEvent.image
    data.append("tickets", this.state.userEvent.tickets)
    console.log('tickets', this.state.userEvent.tickets)
    console.log('datasent', data)
    axios.post(`${process.env.REACT_APP_API}/image`, data)
        .then().catch(err => {
            console.log("imgerr", err)
        })
    }

控制台日志不会让我看到发送到后端的确切信息，但是从当前状态看，它是正确的。

这是后端架构的相关部分（我删除了其他变量以使其易于阅读）：

const mongoose = require('mongoose')

const Event = mongoose.model('event', {

    tickets: {
    type: [{
        ticketType: String,
        price: Number,
        numberOfTickets: Number,
        startSelling: String,
        stopSelling: String,
        startSellingTime: Date,
        stopSellingTime: Date,
        ticketDescription: String,
        refunds: {
            optionSelected: String,
            refundUntil: Date,
            howToResell: String,
            resellAtSpecificPrice: Number,
            minimumPrice: Number,
            nameOfResoldTickets: String
        }
    }]
},


})


module.exports = Event

这是控制器的相关部分（我删除了其他变量以使其易于阅读）

const Event = require('../models/events')

module.exports = (req, res) => {

console.log('req body', req.body)
console.log('req body tickets', req.body.tickets)

let newEvent = {

    tickets: req.body.tickets
 }

    Event.create(newEvent)
    .then(data => {
        console.log('data', data)
        res.send(data)
    })
    .catch(err => console.log(err))

}

当我使用邮递员发布以下内容时：

{
    "title": "Postman",
        "tickets": [{
        "ticketType": "Early Bird",
        "price": "10",
        "numberOfTickets": "100",
        "startSelling": "eventstarts",
        "stopSelling": "eventends",
        "startSellingTime": "2019-12-31T12:30:00",
        "stopSellingTime": "2019-12-31T12:30:00",
        "ticketDescription": "ticketzzz",
        "refunds": {
        "optionSelected": "yes",
        "refundUntil": "2019-12-31T12:30:00",
        "howToResell": "xyz",
        "resellAtSpecificPrice": "40",
        "minimumPrice": "30",
        "nameOfResoldTickets": "asdf"
    }
    }]
}

我没有收到该错误，但它返回：

{
    "_id": "5ddedd850504750620e620bb",
    "title": "Postman",
    "tickets": [
        {
            "_id": "5ddedd850504750620e620bc",
            "ticketType": "Early Bird",
            "price": 10,
            "numberOfTickets": 100,
            "startSelling": "eventstarts",
            "stopSelling": "eventends",
            "startSellingTime": "2019-12-31T12:30:00.000Z",
            "stopSellingTime": "2019-12-31T12:30:00.000Z",
            "ticketDescription": "ticketzzz"
        }
    ],
    "__v": 0
}

奇怪的是它有两个单独的ID

知道我要去哪里哪里吗？

data.append（）在将数据发送到后端之前是否弄乱了我的数据？

0 个答案: