ERROR:

core.es5.js?0445:1084 ERROR SyntaxError: Unexpected token < in JSON at position 0

    at JSON.parse (<anonymous>

SITUATION:

What I am trying to achieve is to pre-select the choice the user already made previously and prevent him from voting twice.

CODE:

component.html

<article class=panel panel-default>

    <div class=panel-body>

      {{ poll.title }}

      <br>

      <br>

      <form #form=ngForm>

        <fieldset [disabled]=alreadyVotedFor(-1)>

          {{ poll.counter1 }} votes <input type=radio id={{ poll.choice1 }} name=my_radio value={{ poll.choice1 }} (click)=onChoice1(form) [checked]=alreadyVotedFor(1)>  {{ poll.choice1 }}

          <br>

          {{ poll.counter2 }} votes <input type=radio id={{ poll.choice2  }} name=my_radio value={{ poll.choice2 }} (click)=onChoice2(form) [checked]=alreadyVotedFor(2)>  {{ poll.choice2 }}

        </fieldset>

      </form>



    </div>

    <footer class=panel-footer>

        <div class=author>

            {{ poll.username }}

        </div>

        <div class=config *ngIf=belongsToUser()>

            <a (click)=onEdit()>Edit</a>

            <a (click)=onDelete()>Delete</a>

        </div>

    </footer>

</article>

component.ts

votes: any;



    ngOnInit() {

        this.pollService.voted(this.poll, localStorage.getItem('userId')).subscribe(

            data => {

                this.votes = data.votes;

                console.log(NGONINIT this.votes: + this.votes);

            },

            err => { console.log(NGONINIT ERROR: + err) },

            () => { console.log(SUBSCRIBE COMPLETE this.votes: + this.votes); }

        );

    }



    alreadyVotedFor(choice: number) {

      let result = ;

      if (this.votes) {

          console.log(THIS.VOTES: +this.votes);

          for (var i = 0; i < this.votes.length; i ++) {

              if (this.votes[i].poll == this.poll.pollId) {

                  result = disabled;

                  if (this.votes[i].choice == choice) {

                      result =  selected;

                  }

              }

          }

      }

      return result;

  }

service

voted(poll: Poll, userID: string) {

    return this.http.get('http://localhost:3000/'+userID)

                    .map(response => response.json());

}

routes/user.js

router.get('/:userid', function (req, res, next) {

  var userId = req.params.userid;

  User.findById(userID, function (err, user) {

    console.log(USER JSON? :+user.json());

    return res.send(user.json());

  });

});

models/user

var mongoose = require('mongoose');

var Schema = mongoose.Schema;

var mongooseUniqueValidator = require('mongoose-unique-validator');



var schema = new Schema({

    firstName: {type: String, required: true},

    lastName: {type: String, required: true},

    password: {type: String, required: true},

    email: {type: String, required: true, unique: true},

    polls: [{type: Schema.Types.ObjectId, ref: 'Poll'}],

    votes: [{

      poll: {type: Schema.Types.ObjectId, ref: 'Poll'},

      choice: {type: Number},

    }],

});



schema.plugin(mongooseUniqueValidator);



module.exports = mongoose.model('User', schema);