每次使用jQuery UI Sortable Widget重新排序后,我都有要重新提交给Express应用程序的名称列表,然后保存到我的Mongo数据库中。我可以成功地对列表项进行重新排序,在浏览器的控制台中数据顺序是正确的,但是我无法确定如何在节点侧正确地发送/接收它。如果我对数据数组进行字符串化处理,则将整个数组保存为第一个对象的键,但是如果我不对数据进行字符串化处理,则不会发送任何内容(数据对象为空)。为简洁起见,这是我的代码缩写:
在我的前端/ jQuery javascript文件中
$(".favList")
.sortable({
connectWith: ".favDetail",
update: function (event, ui) {
var lis = $(".favList .favDetail");
var ids = lis
.map(function (i, el) {
return {
first: el.dataset.first,
last: el.dataset.last,
};
})
.get();
var data = JSON.stringify(ids);
// var data = ids;
$.ajax({
type: "POST",
url: "/people/" + id + "/sortPeople",
data: data,
})
.done(function (response) {
console.log("OK", data);
})
.fail(function (response) {
console.log("Error", response);
});
},
})
.disableSelection();
浏览器的控制台日志输出(一切正常):
data: [{id: "5fbf6cdabec1197e4514e7cb", first: "Boba", last: "Fett"},
{id: "5fbf6cdabec1197e4514e7ca", first: "Jango", last: "Fett"},
{id: "5fbf6cdabec1197e4514e7cc", first: "Aurra", last: "Sing"}]
我的Express JS控制器和路由器:
const people = await People.findOne({
_id: req.params.id,
});
await People.findOneAndUpdate(
{ _id: req.params.id },
{ favPeople: req.body },
).exec();
router.route('/:id/sortPeople').post(sortPeople);
我的“人” Mongoose 模型
const mongoose = require('mongoose');
const peopleSchema = new mongoose.Schema(
{
title: {
type: String,
trim: true,
required: true,
},
favPeople: [
{
id: mongoose.Schema.ObjectId,
first: String,
last: String,
},
],
// favPeople: [],
},
{
timestamps: true,
},
);
module.exports = mongoose.model('People', peopleSchema);
节点的控制台日志输出:( 不正常-数组被保存为第一个也是唯一的对象的键,而不是对象数组):
data: {
'{"id": "5fbf6cdabec1197e4514e7cb", first: "Boba", last: "Fett"},{"id": "5fbf6cdabec1197e4514e7ca", first: "Jango", last: "Fett"},{"id": "5fbf6cdabec1197e4514e7cc", first: "Aurra", last: "Sing"}': ''
}
如果我不使用JSON.stringify()方法,则Express应用程序中什么也不会收到:(Node的控制台日志输出):
data: { undefined: [ '', '', '' ] }
我想在Express应用程序中收到的内容与我在浏览器控制台中拥有的更新数组相同(即):
data: [{id: "5fbf6cdabec1197e4514e7cb", first: "Boba", last: "Fett"},
{id: "5fbf6cdabec1197e4514e7ca", first: "Jango", last: "Fett"},
{id: "5fbf6cdabec1197e4514e7cc", first: "Aurra", last: "Sing"}]
任何帮助深表感谢!谢谢!
我找到了解决方案。为了将数据正确地传递到控制器,必须包含“ dataType”和“ contentType”。这是我更新的工作代码:
$.ajax({
type: "POST",
dataType: "json",
contentType: "application/json",
url: "/people/" + id + "/sortPeople",
data: JSON.stringify(ids),
})