Mongoose - Unable to create more than 4 fields using `findOrCreate`

问题

I am using Node.js, MongoDB with Mongoose and am using passport.js for authentication.

Here is my user schema:

const userSchema = new mongoose.Schema({
  email: String,
  password: String,
  googleId: String,
  facebookId: String,
  profilePic: String,
  fName: String,
  lName: String
});

And my google strategy:

passport.use(
  new GoogleStrategy(
    {
      clientID: process.env.CLIENT_ID,
      clientSecret: process.env.CLIENT_SECRET,
      callbackURL: "http://localhost:3000/auth/google/dashboard",
      profileFields: ["id", "displayName", "photos", "email"]
    },
    function(accessToken, refreshToken, profile, cb) {
      console.log(profile);
      console.log(profile.photos[0].value);
      User.findOrCreate(
        { googleId: profile.id },
        { profilePic: profile.photos[0].value },
        { email: profile.emails[0].value },

        function(err, user) {
          return cb(err, user);
        }
      );
    }
  )
);

When I console.log my result I see my profile, along with profile photo url and profile email but I am unable to see my email id. Only 4 fields are getting created :

_id
googleId
profilePic
_v

Can someone tell me how to get the email field to save too?

回答1:

Why you are having the issue:
You are not using the findOrCreate method well. findOrCreate can take up to four arguments.
findOrCreate(conditions, doc, options, callback):

conditions: This is used to specify the selection-filter to find the document.
doc[optional]: If a document that matches the selection-filter(conditions) is not found, this doc is merged with what is you have in conditions and then inserted into the DB.
options[optional]: From the plugin codebase, I figured you can use options.upsert(if set to true) to update the document if it already exist.
callback: The function executed after the operation is done.

What you are doing wrong is passign { email: profile.emails[0].value } as the third argument where options is expected, you are supposed to include it in the doc i.e the second argument.

The Fix
Try this:

passport.use(
  new GoogleStrategy(
    {
      clientID: process.env.CLIENT_ID,
      clientSecret: process.env.CLIENT_SECRET,
      callbackURL: "http://localhost:3000/auth/google/dashboard",
      profileFields: ["id", "displayName", "photos", "email"]
    },
    function(accessToken, refreshToken, profile, cb) {
      console.log(profile);
      console.log(profile.photos[0].value);
      User.findOrCreate(
        { googleId: profile.id },
        // Notice that this function parameter below 
        // includes both the profilePic and email
        { profilePic: profile.photos[0].value, email: profile.emails[0].value },
        function(err, user) {
          return cb(err, user);
        }
      );
    }
  )
);

来源：https://stackoverflow.com/questions/60393424/mongoose-unable-to-create-more-than-4-fields-using-findorcreate

标签

node.js

mongodb

mongoose

passport.js