fetch all the users with specific attribute

Hey everybody Im new with node and mongo hope for your help with it.I defined a user schema with mongoose:

var userSchema = mongoose.Schema({local            : {    email        : String,    password     : String,    name         : String},facebook         : {    id           : String,    email        : String,    token        : String,    firstName    : String,    familyName   : String},google           : {    id           : String,    email        : String,    token        : String,    firstName    : String,    familyName   : String}});

Im tring to fetch all the users (from local google and facebook) with specific email.How do I write it ? I tried something like:

var User = require('./models/user');app.get('/api/user/:email',function(req,res){    User.findOne({'email':req.params.email},function(err,user){       res.json(user);    })});

How do I fix it ?Thanks.