mongodb and authenticate and passport in node.js

Question

i have a collection like this in mongodb

{
   username:silver,
   Email:[email protected],
   password:silvester,
}

so to authenticate i will fetch data from database and then i will check given email is exist or not with if statement like this

app.post("/login",function(req,res){

   var email=req.body['emailid'];

   collection.find({email:[email protected]}).toArray(function(err,res)
   {
      if(res.length==0){
         console.log("name is not exist");
      }else{
         if(res.email==email){
            console.log("email is exist");
         }else{
            console.log("not exist");
         }
      }
   });
});

so here how to use passport module for authentication.let me know it with sample code with configuration. i am using express3.x framework .so how to configure it also.

msmirnov · Accepted Answer · 2013-03-08 08:51:21Z

3

Here you can read about local strategies, and here about configure.

Your local strategy should look like this:

passport.use(new LocalStrategy({
        emailField: 'email',
        passwordField: 'passw',
    },

    function (emailField, passwordField, done) {
        process.nextTick(function () {
            db.collection(dbCollection, function (error, collection) {
                if (!error) {
                    collection.findOne({
                        'email': [email protected]
                        'password': silvester // use there some crypto function
                    }, function (err, user) {
                        if (err) {
                            return done(err);
                        }
                        if (!user) {
                            console.log('this email does not exist');
                            return done(null, false);
                        }
                        return done(null, user);
                    });
                } else {
                    console.log(5, 'DB error');
                }
            });
        });
    }));

answered Mar 8, 2013 at 8:51

msmirnov

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6 Comments

silvesterprabu Over a year ago

should i write above coding within post request like app.post('/login',function(req,res){passport.use(new LocalStrategy({ emailField: 'email', passwordField: 'passw', }, }) let me know it..

msmirnov Over a year ago

I'm not sure that's a good idea. Also, do not forget to about passport.serializeUser and passport.deserializeUser.

silvesterprabu Over a year ago

how to use passport for authenticate the data of mongodb.

msmirnov Over a year ago

In your app.post, you can use passport.authenticate. All of this information is in the documentation

silvesterprabu Over a year ago

my doubt is after give login data like emailid and password i will post that to server by using app.post() so i will keep that value in different variable in post method after how to pass that data by using passport.use() or passport.authenticate() and then how to check that data exist is database (i am not telling about query,i am asking that where i have to write that query and how to comapre that data) i am not a familiar for node.js so let me know it.thanks

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