将布尔值从mongodb传递到html的问题

如何解决将布尔值从mongodb传递到html的问题

我在尝试将布尔值传递给html时遇到问题。我正在使用node.js，mongodb和mongoose。我有一个带有两个复选框的表单。在我的猫鼬模式中，我有一个checkbox1和checkbox2。它们都是布尔类型，默认值为false

现在，在我的表单中，如果用户选中该框，它将触发PUT路由并应更新mongodb。从假到真，反之亦然。我可以将值从false更改为true，但无法将值从true更改为false。在终端中，我收到错误消息“无法读取null的属性'checkbox1'。

这是我的app.js：

const express = require("express");
const bodyParser = require("body-parser");
const mongoose = require("mongoose");
const methodOverride = require("method-override");
const _ = require("lodash");

const app = express();
app.use(bodyParser.urlencoded({ extended: true }));

app.set("view engine","ejs");
app.use(express.static("public"));
app.use(methodOverride("_method"));

mongoose.connect("mongodb://localhost:27017/budgetDB",{
  useNewUrlParser: true,useUnifiedTopology: true,useFindAndModify: false,});

const itemSchema = {
  item: {
    type: String,required: true,},dueDate: {
    type: String,amount1: {
    type: mongoose.Decimal128,amount2: {
    type: mongoose.Decimal128,notes: {
    type: String,checkbox1: {
    type: Boolean,checkbox2: {
    type: Boolean,};

const Item = mongoose.model("Item",itemSchema);

app.get("/",function (req,res) {
  res.render("index");
});

app.get("/month",res) {
  Item.find({},function (err,itemFound) {
    res.render("monthTemplate",{ newItems: itemFound });
  });
});

app.post("/month",res) {
  const itemDesc = req.body.item;
  const billDueDate = req.body.billDueDate;
  let checkboxStatusA = req.body.checkboxA;
  const amountForA = req.body.amountForA;
  let checkboxStatusU = req.body.checkboxU;
  const amountForU = req.body.amountForU;
  const notesForItem = req.body.notes;

  if (checkboxStatusA === "on") {
    checkboxStatusA = true;
  } else {
    false;
  }

  if (checkboxStatusU === "on") {
    checkboxStatusU = true;
  } else {
    false;
  }

  const newItem = new Item({
    item: itemDesc,dueDate: billDueDate,checkbox1: checkboxStatusA,amount1: amountForA,amount2: amountForU,checkbox2: checkboxStatusU,notes: notesForItem,});

  newItem.save();

  res.redirect("/month");
});

app.get("/items/:itemId",res) {
  const requestItemId = req.params.itemId;

  Item.findOne({ _id: requestItemId },item) {
    res.render("item",{
      itemDesc: item.item,billDueDate: item.dueDate,amountForA: item.amount1,checkboxA: item.checkbox1,amountForU: item.amount2,checkboxU: item.checkbox2,billNotes: item.notes,});
  });
});

app.put("/checkbox",res) {
  const checkboxCheckedID = req.body.checkboxA;
  console.log(checkboxCheckedID);

  Item.findById(checkboxCheckedID,itemFound) {
    if (err) {
      console.log("Did not find the item");
    } else if (itemFound.checkbox1 === false) {
      Item.findByIdAndUpdate(
        req.body.checkboxA,{ $set: { checkbox1: true } },{ new: true },itemFound) {
          if (err) {
            console.log(err);
          } else {
            console.log("changed successful");
            res.redirect("/month");
          }
        }
      );
    } else if (itemFound.checkbox1 === true) {
      Item.findByIdAndUpdate(
        req.body.checkboxA,{ $set: { checkbox1: false } },itemFound) {
          res.redirect("/month");
        }
      );
    }
  });

  // end of PUT route
});

app.listen(3000,function () {
  console.log("Server running on port 3000");
});

这是我表格的摘录：

<% newItems.forEach(function(item){ %>
            <tr>
              <th scope="row"><a href="/items/<%=item._id %>"><%=item.item %></a></th>
              <td><%=item.dueDate %></td>
              <form action="/checkbox?_method=PUT" method="POST">
                <td>
                  <% const aCheckbox = item.checkbox1 %>
                  <% if ( aCheckbox === true){ %>
                  <input type="checkbox" name="checkboxA" checked value="<%= item._id%>" onChange="this.form.submit()">
                  <% } else if (aCheckbox === false) {%>
                  <% console.log("checkbox not checked") %>
                  <input type="checkbox" name="checkboxA" value="<%= item._id%>" onChange="this.form.submit()">
                  <% } %>
                  <span>$<%=item.amount1 %></span>

任何帮助将不胜感激！

谢谢。