我正在嘗試將多個物件推送到一個子陣列中，但我不確定它是否正確。（我認為這是不正確的，因為我有一個錯誤。）
TypeError：無法讀取未定義的屬性（讀取'product_identifier'）；
console.log(req.body.delivery[0].toDeliver.product_identifier);
它給出了 undefined 并且瀏覽器中的 http 錯誤是 500。
這是我的后端代碼。
export const delivery = async (req,res) => {
const { id } = req.params;
console.log(id);
console.log(req.body.delivery[0]);
try {
if(!id) return res.status(404).json({ message: 'ID not found' });
await OwnerModels.findByIdAndUpdate(id,
{
$push: {
delivery:
{
clientname: req.body.delivery[0].clientname,
address: req.body.delivery[0].address,
email: req.body.delivery[0].email,
number: req.body.delivery[0].number,
toDeliver: [
{
product_identifier: req.body.delivery[0].toDeliver.product_identifier,
productname: req.body.delivery[0].toDeliver.productname,
price: req.body.delivery[0].toDeliver.price
}
],
toDeliverPaidViaPaypal: []
}
}
},
{
new: true
},(err,res)=> {
if(err) return console.log(err);
console.log(res);
})
} catch (error) {
console.error(error);
res.status(500).json({ message: 'Server error' });
}
}
這是我的架構。
const OwnerSchema = mongoose.Schema({
username: {
require: true,
type: String,
},
password: {
require: true,
type: String,
},
isAdmin: {
type: Boolean,
default: true,
},
store: [
{
product_identifier: {
type: String,
require: true,
},
productname: {
type: String,
required: true,
},
price: {
type: Number,
required: true,
},
quantity: {
type: Number,
required: true,
},
categoryfilter: {
type: String,
required: true
},
description: {
type: String,
required: true,
},
specs: {
type: String,
required: true
},
imageBase64: {
type: String,
required: true,
},
timestamp: {
type: String,
required: true,
}
}
],
delivery: [
{
clientname: {
type: String,
required: true
},
address: {
type: String,
required: true
},
email: {
type: String,
required: true
},
number: {
type: Number,
required: true
},
toDeliver: [
{
product_identifier: {
type: String,
require: true,
},
productname: {
type: String,
required: true
},
price: {
type: Number,
required: true
},
}
],
toDeliverPaidViaPaypal: [
{
product_identifier: {
type: String,
require: true,
},
productname: {
type: String,
required: true
},
price: {
type: Number,
required: true
},
}
]
}
]
});
這是我的 Axios 請求。
export const delivery = (adminID,clientname,address,email,number,todeliver,viapaypal) => api.patch(`/checkout/${adminID}`,
{
delivery: [
{
clientname: clientname,
address: address,
email: email,
number: number,
todeliver: todeliver, // array with 3 objects
toDeliverPaidViaPaypal: viapaypal // empty array
}
]
}
)
這是我要發送的資料。
{
clientname: 'Gino Dela Vega',
address: '008 Estrella.st Santo Cristo City of Malolos,Bulacan',
email: '[email protected]',
number: 9922325221,
todeliver: [
{
product_identifier: 'tl9d3g1ut9pb2o13-87r0c',
productname: 'DELL E2219HN',
price: 7500,
imageBase64: ........,
quantity: '99',
date: '1652347791630',
_id: '627cd4d28c7976e1f02817a3'
},
{
product_identifier: 'd173prauc2-t93ln1o6t58',
productname: 'Hanns.G HL195',
price: 4500,
imageBase64: ........,
quantity: '99',
date: '1652347791630',
_id: '627cd4d58c7976e1f02817aa'
},
{
product_identifier: '87l2bu3o971tt1drcwp-3t',
productname: 'LG E1941T',
price: 4500,
imageBase64: ........,
quantity: '99',
date: '1652347791630',
_id: '627cd4da8c7976e1f02817b1'
}
],
toDeliverPaidViaPaypal: []
uj5u.com熱心網友回復：
因為您的后端呼叫toDeliver，req.body.delivery[0].toDeliver但在 axios 請求中您發送todeliver。只需將 axios 請求從更改todeliver為toDeliver以下是：
delivery: [
{
clientname: clientname,
address: address,
email: email,
number: number,
toDeliver: todeliver, // <============ **HERE IS**
toDeliverPaidViaPaypal: viapaypal // empty array
}
]
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