'mongo-connect error with mongo-connect(session)
After searching around about it, I can't find any solution or mistake in my code
about this error. I've got my app.js
files inside my node JS application with the mongo-connect
declaration :
const MongoStore = require('connect-mongo')(session)
And I've got this error :
TypeError: Class constructor MongoStore cannot be invoked without 'new' at Object. (/Users/souhailmohamed/project/devops/story website/app.js:11:20) at Module._compile (internal/modules/cjs/loader.js:1063:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10) at Module.load (internal/modules/cjs/loader.js:928:32) at Function.Module._load (internal/modules/cjs/loader.js:769:14) at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12) at internal/main/run_main_module.js:17:47
There is my app.use
code beloww :
app.use(session({
secret: 'story book',
resave: false,
saveUninitialized: false,
store: new MongoStore({ mongooseConnection: mongoose.connection })
}))
I understand pretty well about the
const MongoStore = require('connect-mongo')(session)
but I didn't understand the error. But it's from a tutorial from youtube by traversy media LinK
Solution 1:[1]
connect-mongo
v4 introduces new signature (compared to v3).
Here is the official migration guide.
Also, here is a quick diff of what I changed in my specific project (using mongoose
and dotenv
) to upgrade from connect-mongo
v3 to v4:
Solution 2:[2]
I had the same problem in my code and solved it using this:
const MongoDbStore = require('connect-mongo');
Remove (session) from the require statement and update the app.use() like this:
// Session Config
app.use(
session({
secret: 'story book',
resave: false,
saveUninitialized: false,
store: MongoDbStore.create({
mongoUrl: YourDatabaseURL
})
})
);
Solution 3:[3]
I was following the same so I discovered an npm pakage connect-mongodb-session. Install it and use the same code of session as Brad uses in his video
const MongoDBStore = require('connect-mongodb-session')(session);
//sessions
app.use(session({
secret: 'keyboard cat',
resave: false,
saveUnitialized: false,
store: new MongoDBStore({
mongooseConnection: mongoose.connection
})
//cookie: { secure: true }
}))
const store = new MongoStore({
uri: 'your mongo uri' ,
collection:'mySessions'
})
//express middleware
app.use(session({
secret: 'keyboard cat',
resave: false,
saveUninitialized: false,
store: store
// Don't create a session until something is stored
// cookie: { secure: true } - this wont work without https
}))
It solved my relogging issue also. If you close the tab and renter to localhost you get yourself logged in already
Solution 4:[4]
Ok so i've found a way to resolve it, i don't about the reason, on which version of express to use but i removed the (session) after mongo-connect and change the app.use to this :
app.use(session({
secret: 'story book',
resave: false,
saveUninitialized: false,
store: MongoStore.create({ mongoUrl: 'mongodb+srv://<id+ password>@cluster0.cq7f2.mongodb.net/DBname?retryWrites=true&w=majority' })
}))
Solution 5:[5]
Certain rule are changed for the syntax in "connect-mongo" document here
const MongoStore = require("connect-mongo");
secret: 'keyboard cat',
resave: false,
saveUninitialized: false,
store: MongoStore.create({
mongoUrl: process.env.MONGO_URI //(URI FROM.env file)
})
//stroed it in database
}));
Solution 6:[6]
In your app.js
make the following changes:
let MongoStore = require('connect-mongo');
app.use(
session({
secret: 'keyboard cat',
resave: false,
saveUninitialized: false,
store: MongoStore.create({
mongoUrl: 'your mongo url'
})
});
);
References:
Solution 7:[7]
I have same problem. Here is the solution:
var session = require('express-session');
var MongoStore = require('connect-mongo');
var mongoose = require('mongoose');
mongoose.Promise = global.Promise;
app.use(session({
secret : 'mysecretkey',
resave : true,
saveUninitialized : true,
store :MongoStore.create({ mongoUrl: DBUrl })
}));
Solution 8:[8]
app.use(session({
store: MongoStore.create({ mongoUrl: 'mongodb://localhost/test-app' })
}));
// Advanced usage
app.use(session({
store: MongoStore.create({
mongoUrl: 'mongodb://user12345:foobar@localhost/test-app?authSource=admin&w=1',
mongoOptions: advancedOptions // See below for details
})
}));
Solution 9:[9]
Here is the solution:
const session = require('express-session');
const MongoStore = require('connect-mongo');
const mongoose = require('mongoose');
app.use(session({
secret: 'story book',
resave: false,
saveUninitialized: false,
store: new MongoStore({
mongoUrl: mongoose.connection._connectionString,
mongoOptions: {}
})
}))
Solution 10:[10]
Just use the another npm package connect-mongodb-session and it should work https://www.npmjs.com/package/connect-mongodb-session
const MongoDBStore = require('connect-mongodb-session')(session);
Sources
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Source: Stack Overflow