Не удается прочитать свойство «равно» неопределенного

Question

Я получаю следующую ошибку при попытке обновить сообщение в моем приложении node / express. Я также использую mongoDB.

Cannot read property 'equals' of undefined
at eval (eval at compile 
(/home/ubuntu/workspace/node_modules/ejs/lib/ejs.js:549:12), 
<anonymous>:78:42)
at returnedFn 
(/home/ubuntu/workspace/node_modules/ejs/lib/ejs.js:580:17)
at tryHandleCache 
(/home/ubuntu/workspace/node_modules/ejs/lib/ejs.js:223:34)
at View.exports.renderFile [as engine] 
(/home/ubuntu/workspace/node_modules/ejs/lib/ejs.js:437:10)

Здесь появляется ошибка

<% if(currentUser && 
bodhi.author.id.equals(currentUser._id) || currentUser && 
currentUser.isAdmin === true){ %>

Может ли это быть проблемой с версиями узла / npm, которые я использую?

Я использую узел -v v10.9.0 и npm -v 6.4.1

У меня похожая функциональность, работающая с приложением, которое использует v10.5.0 и npm -v 6.2.0

Вот моя модель:

    var mongoose = require("mongoose");
    var bodhiSchema = new mongoose.Schema({
    name: String,
    donation: String,
    BTCaddress: String,
    image: String,
    imageId: String,
    description: String,
    createdAt: { type: Date, default: Date.now },
     author: {
     id: {
        type: mongoose.Schema.Types.ObjectId,
        ref: "User"
    },
    username: String
    },
    comments: [
    {
        type: mongoose.Schema.Types.ObjectId,
        ref: "Comment"
    }
    ]
    });

    module.exports = mongoose.model("Bodhi", bodhiSchema);

Вот блок, на который указывает ошибка:

    <div class="col-md-12">
        <div class="row"> 
            <div class="thumbnail">
               <img class="img-responsive" src="<%= bodhi.image %>">
            <div class="caption-full">
               <h4>suggested donation <%= bodhi.donation %>/BTC<h4> 
               <hr>
               <h5><a><%=bodhi.name%></a></h5>
               <p><%= bodhi.description %></p>
               <p>
                  <em>Submitted by: <%= bodhi.author.username %>, <%= 
                moment(bodhi.createdAt).fromNow() %></em>
              </p>
               <% if(currentUser && 
              bodhi.author.id.equals(currentUser._id) || currentUser 
              && currentUser.isAdmin === true){ %>
                    <a class="btn btn-xs btn-warning" 
              href="/bodhis/<%=bodhi._id %>/edit">Edit</a>
                    <form class="delete-form" 
              action="/bodhis/<%=bodhi._id %>?_method=DELETE" 
              method="POST"
                          onsubmit="return confirm('Are You Sure You 
              Want To Delete This Bodhi?');">
                        <button class="btn btn-xs btn- 
              danger">Delete</button>
                    </form>
                <% }%>
               </div>
             </div>
           </div>

Вот мой файл app.js:

    var dotenv     = require('dotenv').config(),
        express    = require("express"),
        app        = express(),
        bodyParser = require("body-parser"), 
        mongoose   = require("mongoose"),
        flash      = require("connect-flash"),
        passport   = require("passport"),
        cookieParser = require("cookie-parser"),
        LocalStrategy = require("passport-local"),
        methodOverride = require("method-override"),
        Bodhi      = require("./models/bodhi"),
        Comment    = require("./models/comment"),
        User       = require("./models/user"),
        session = require("express-session"),
        moment = require('moment'),
        seedDB     = require("./seeds"),


    //requiring routes
    commentRoutes = require("./routes/comments"),
    bodhiRoutes   = require("./routes/bodhis"),
    indexRoutes   = require("./routes/index"),
    contactRoutes = require("./routes/contact");

    console.log(process.env.DATABASEURL);
    var url = process.env.DATABASEURL || 
    "mongodb://localhost/bodhishare";
    mongoose.connect(url);




    app.use(bodyParser.urlencoded({extended: true}));
    app.set("view engine", "ejs");
    app.use(express.static(__dirname + "/public"));
    app.use(methodOverride("_method"));
    app.use(cookieParser());
    app.use(session({secret: process.env.secret}));
    app.use(flash());
    //seedDB(); //uncomment this line to seed the database

    app.locals.moment = require("moment");
    //passport config
    app.use(require("express-session")({
      secret: process.env.secret,
      resave: false,
      saveUninitialized: false
    }));

    app.use(passport.initialize());
    app.use(passport.session());
    passport.use(new LocalStrategy(User.authenticate()));
    passport.serializeUser(User.serializeUser());
    passport.deserializeUser(User.deserializeUser());

    app.use(function(req, res, next){
      res.locals.currentUser = req.user;
      res.locals.error = req.flash("error");
      res.locals.success = req.flash("success");
      next();
    });

    app.use("/", indexRoutes);
    app.use("/bodhis", bodhiRoutes);
    app.use("/bodhis/:id/comments", commentRoutes);
    app.use("/contact", contactRoutes);



    app.listen(process.env.PORT, process.env.IP ,function(){
      console.log("The bodhishare server has started!");
    });