javascript - ReferenceError 'model' is not defined in mongoose - Stack Overflow

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I am trying to write a basic mongoose application which has a schema. I had also created a model. The code is as follows.` \

var mongoose=require('mongoose');
dbUrl='mongodb://localhost:27017/trial';
mongoose.connect(dbUrl);

var userSchema=new mongoose.Schema({
    name:String,
    email:String,
    createdOn:Date
},{collection:'users'});

mongoose.model('User', userSchema);
var newUser=new User({name:'Simon',
    email:'[email protected]',
    createdOn:Date.now()
});

newUser.save(function(err){
    if(!err){
        console.log('User Saved');
    }
});


console.log(userOne.name);


mongoose.connection.on('connected',function(){
    console.log('Mongoose connected'+dbUrl);
});

mongoose.connection.on('error',function(err){
    console.log('Error'+err);
});

mongoose.connection.on('disconnected',function(){
    console.log('disconnected');

});

I am trying to write a basic mongoose application which has a schema. I had also created a model. The code is as follows.` \

var mongoose=require('mongoose');
dbUrl='mongodb://localhost:27017/trial';
mongoose.connect(dbUrl);

var userSchema=new mongoose.Schema({
    name:String,
    email:String,
    createdOn:Date
},{collection:'users'});

mongoose.model('User', userSchema);
var newUser=new User({name:'Simon',
    email:'[email protected]',
    createdOn:Date.now()
});

newUser.save(function(err){
    if(!err){
        console.log('User Saved');
    }
});


console.log(userOne.name);


mongoose.connection.on('connected',function(){
    console.log('Mongoose connected'+dbUrl);
});

mongoose.connection.on('error',function(err){
    console.log('Error'+err);
});

mongoose.connection.on('disconnected',function(){
    console.log('disconnected');

});

` But when I tried to instantiate the model, I'm getting the following error.

var newUser=new User({name:'Simon',
                ^
ReferenceError: User is not defined
    at Object.<anonymous> (C:\Users\jijebara\Desktop\IoT\Node+Mongo\m_app.js:12:
17)
    at Module._pile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Function.Module.runMain (module.js:501:10)
    at startup (node.js:129:16)
    at node.js:814:3

I am also sure that the connections are sure since the console messages in connection.on work properly.

Any ideas on how to solve this .. Thanks in advance..

• javascript
• node.js
• mongodb
• mongoose

Share Improve this question Follow edited May 28, 2023 at 19:48 George Lords of Castle 1,69544 gold badges1515 silver badges3333 bronze badges asked Sep 29, 2015 at 15:04 jba065jba065 35111 gold badge66 silver badges1212 bronze badges

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 4

You need to import your newly created model. Just add this before using new User

var User = mongoose.model('User');

Don't use model.

const User = ("User", userSchema);

I am trying to write a basic mongoose application which has a schema. I had also created a model. The code is as follows.` \

var mongoose=require('mongoose');
dbUrl='mongodb://localhost:27017/trial';
mongoose.connect(dbUrl);

var userSchema=new mongoose.Schema({
    name:String,
    email:String,
    createdOn:Date
},{collection:'users'});

mongoose.model('User', userSchema);
var newUser=new User({name:'Simon',
    email:'[email protected]',
    createdOn:Date.now()
});

newUser.save(function(err){
    if(!err){
        console.log('User Saved');
    }
});


console.log(userOne.name);


mongoose.connection.on('connected',function(){
    console.log('Mongoose connected'+dbUrl);
});

mongoose.connection.on('error',function(err){
    console.log('Error'+err);
});

mongoose.connection.on('disconnected',function(){
    console.log('disconnected');

});

I am trying to write a basic mongoose application which has a schema. I had also created a model. The code is as follows.` \

var mongoose=require('mongoose');
dbUrl='mongodb://localhost:27017/trial';
mongoose.connect(dbUrl);

var userSchema=new mongoose.Schema({
    name:String,
    email:String,
    createdOn:Date
},{collection:'users'});

mongoose.model('User', userSchema);
var newUser=new User({name:'Simon',
    email:'[email protected]',
    createdOn:Date.now()
});

newUser.save(function(err){
    if(!err){
        console.log('User Saved');
    }
});


console.log(userOne.name);


mongoose.connection.on('connected',function(){
    console.log('Mongoose connected'+dbUrl);
});

mongoose.connection.on('error',function(err){
    console.log('Error'+err);
});

mongoose.connection.on('disconnected',function(){
    console.log('disconnected');

});

` But when I tried to instantiate the model, I'm getting the following error.

var newUser=new User({name:'Simon',
                ^
ReferenceError: User is not defined
    at Object.<anonymous> (C:\Users\jijebara\Desktop\IoT\Node+Mongo\m_app.js:12:
17)
    at Module._pile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Function.Module.runMain (module.js:501:10)
    at startup (node.js:129:16)
    at node.js:814:3

I am also sure that the connections are sure since the console messages in connection.on work properly.

Any ideas on how to solve this .. Thanks in advance..

• javascript
• node.js
• mongodb
• mongoose

Share Improve this question Follow edited May 28, 2023 at 19:48 George Lords of Castle 1,69544 gold badges1515 silver badges3333 bronze badges asked Sep 29, 2015 at 15:04 jba065jba065 35111 gold badge66 silver badges1212 bronze badges

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 4

You need to import your newly created model. Just add this before using new User

var User = mongoose.model('User');

Don't use model.

const User = ("User", userSchema);

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