mongodb query on nodeJS say cannot read property remove of 'null' - node.js

Question

This is my entry in database in mongodb which is of type object in schema
"_id" : ObjectId("5539bed4b417d75d1fee5df7"),
"favMovies" : {
"alternate_ids" : {
"imdb" : "2820852"
},
"studio" : "Universal Pictures",
"abridged_directors" : [
{
"name" : "James Wan"
}
],
"abridged_cast" : [
{
"characters" : [
"Dominic Toretto"
],
"id" : "162652472",
"name" : "Vin Diesel"
},
{
"characters" : [
"Brian O'Conner"
],
"id" : "162654234",
"name" : "Paul Walker"
},
{
"characters" : [
"Louie Tran"
],
"id" : "162684066",
"name" : "Tony Jaa"
},
{
"characters" : [
"Deckard Shaw"
],
"id" : "162653720",
"name" : "Jason Statham"
},
{
"characters" : [
"Luke Hobbs"
],
"id" : "770893686",
"name" : "Dwayne \"The Rock\" Johnson"
}
],
"synopsis" : "Continuing the global exploits in the unstoppable franchise built on speed, Vin Diesel, Paul Walker and Dwayne Johnson lead the returning cast of Fast & Furious 7. James Wan directs this chapter of the hugely successful series that also welcomes back favorites Michelle Rodriguez, Jordana Brewster, Tyrese Gibson, Chris \"Ludacris\" Bridges, Elsa Pataky and Lucas Black. They are joined by international action stars new to the franchise including Jason Statham, Djimon Hounsou, Tony Jaa, Ronda Rousey and Kurt Russell.",
"ratings" : {
"audience_score" : 88,
"audience_rating" : "Upright",
"critics_score" : 82,
"critics_rating" : "Certified Fresh"
},
"release_dates" : {
"theater" : "2015-04-03"
},
"critics_consensus" : "",
"runtime" : 140,
"mpaa_rating" : "PG-13",
"genres" : [
"Mystery & Suspense",
"Action & Adventure"
],
"year" : 2015,
"title" : "Furious 7",
"id" : 771354922
},
"username" : "punk",
"__v" : 0
}
In my Node JS code I use the following query
app.delete('/favMovies/:user/:movid',function(req, res){
var user = req.params.user;
var mid = req.params.movid;
console.log(mid);
console.log(user);
MovModel.find({username:user,'favMovies.id':mid}, function (err, doc) {
doc.remove();
MovModel.find({username: user},function (err, data) {   
res.json(data);
});
});
});
In the above snippet mid is movie id. For the above entry in database mov
"id" : 771354922
and user is username but I am getting following error for my query which is working fine in mongo client.
/Users/pankajtripathi/Documents/ECLIPSE-FILES/MyProject/server.js:132
doc.remove();
^
TypeError: Cannot read property 'remove' of null
at /Users/pankajtripathi/Documents/ECLIPSE-FILES/MyProject/server.js:132:5
at /Users/pankajtripathi/Documents/ECLIPSE-FILES/MyProject/node_modules/mongoose/lib/query.js:1169:16
at /Users/pankajtripathi/Documents/ECLIPSE-FILES/MyProject/node_modules/mongoose/node_modules/kareem/index.js:103:16
at process._tickCallback (node.js:355:11)

Answer 1

You should use findOneAndRemove()
MovModel.findOneAndRemove({username:user,'favMovies.id':mid}, function (err, doc) {
if (err) console.log(err);
res.json(doc);
}
Finds a matching document, removes it, passing the found document (if
any) to the callback. Executes immediately if callback is passed.

Answer 2

I changed the query and its working fine now.
MovModel.findOneAndRemove({username:user,_id:mid}, function (err, doc) {
console.log(doc);
MovModel.find({username: user},function (err, data) {
res.json(data);
});
});