Cannot read property 'name' of null node

Question

Schema

var campgroundSchema = new mongoose.Schema({
     name: String,
     image: String,
     description: String,
     _id: String
});

var Campground = mongoose.model("Campground", campgroundSchema);

app.get("/campgrounds/:id",function(req , res){
    Campground.findById(req.params._id, function(err, foundCampgrounds){
        if(err){
            console.log(err);
        }else{
            res.render("show", {campground: foundCampgrounds});
        }
    });
});

show.ejs

<%- include('partials/header')  %> 
<h1>this is a show template</h1>
<p><%= campground.name %></p>
<img src="<%=campground.image%>">

<%- include('partials/footer')  %>

error

TypeError: /home/ec2-user/environment/Yelpcamp/v2/views/show.ejs:3`
    1| <%- include('partials/header')  %> `
    2| <h1>this is a show template</h1>`
 >> 3| <p><%= campground.name %></p>`
    4| <img src="<%=campground.image%>">`
    5| 
    6| <%- include('partials/footer')  %>`

Cannot read property 'name' of null at eval (/home/ec2-user/environment/Yelpcamp/v2/views/show.ejs:13:37) at show (/home/ec2-user/environment/Yelpcamp/v2/node_modules/ejs/lib/ejs.js:656:17) at tryHandleCache (/home/ec2-user/environment/Yelpcamp/v2/node_modules/ejs/lib/ejs.js:254:36) at View.exports.renderFile [as engine] (/home/ec2-user/environment/Yelpcamp/v2/node_modules/ejs/lib/ejs.js:459:10) at View.render (/home/ec2-user/environment/Yelpcamp/v2/node_modules/express/lib/view.js:135:8) at tryRender (/home/ec2-user/environment/Yelpcamp/v2/node_modules/express/lib/application.js:640:10) at Function.render (/home/ec2-user/environment/Yelpcamp/v2/node_modules/express/lib/application.js:592:3) at ServerResponse.render (/home/ec2-user/environment/Yelpcamp/v2/node_modules/express/lib/response.js:1012:7) at /home/ec2-user/environment/Yelpcamp/v2/app.js:74:17 at /home/ec2-user/environment/Yelpcamp/v2/node_modules/mongoose/lib/model.js:4828:16 at /home/ec2-user/environment/Yelpcamp/v2/node_modules/mongoose/lib/query.js:4390:12 at model.Query.Query._completeOne (/home/ec2-user/environment/Yelpcamp/v2/node_modules/mongoose/lib/query.js:2074:12) at Immediate.Query.base.findOne.call (/home/ec2-user/environment/Yelpcamp/v2/node_modules/mongoose/lib/query.js:2136:10) at Immediate. (/home/ec2-user/environment/Yelpcamp/v2/node_modules/mquery/lib/utils.js:116:16) at runCallback (timers.js:705:18) at tryOnImmediate (timers.js:676:5)

i am getting this error even after restarting mongodb and how can i check if the name is null or not

Are you sure you're getting a result from mongoose? It seems foundCampgrounds is null. can you console.log it? — i.brod, Feb 22 '20 at 20:32
yeah it is showing that the foundCampgrounds is null ,but i can't understand why — Nitin Priyadarshi, Feb 24 '20 at 13:05
`var curid = req.params.id;` `curid = curid.replace(/\s/g,'');` — Nitin Priyadarshi, Feb 24 '20 at 14:48
since i am having a blank space after the objectid. for more info search [CastError: Cast to ObjectId failed for value “undefined” at path “_id” — Nitin Priyadarshi, Feb 24 '20 at 14:49

score 1 · Accepted Answer · answered Oct 22 '20 at 17:55

1

bruh it has to be req.params.id without underscores : )

answered Oct 22 '20 at 17:55

Vinay Singh

26
1

4

Good answer but please provide a more professional oriented answer. Use examples and documentation sources to harden your point. Specifically more on the topic of request and params with different examples. – xIsra Oct 22 '20 at 19:57
please add some explanation to the answer – Zig Razor Oct 23 '20 at 06:47

Diptarka Roy · Answer 2 · 2020-08-05T16:51:31.670

0

The solution is:

After restarting the server, open the "/campgrounds" page, which in my case is "http://localhost:3000/campgrounds"
Thereafter click on more info.

I also faced the same problem, but when I opened from /campgrounds page it was solved

edited Aug 05 '20 at 16:51

answered Aug 05 '20 at 16:46

Diptarka Roy

1
1

score 0 · Answer 3 · edited Jun 17 '21 at 22:23

0

The solution of the problem is bit simple and it is in this line of code

res.redirect("/campgrounds"{campground:newCampgrounds})

You might be missing referencing the newCampgrounds to the campground that will be going to be used in the show.ejs as campground.name or campground.image so on..

edited Jun 17 '21 at 22:23

Todd

652
2
19
37

answered Jun 17 '21 at 05:40

iAMmrMACKENCHI

1
1

Cannot read property 'name' of null node

3 Answers3