Question

151

Cannot use 'in' operator to search for '_id' in

rated 0 times [ 156] [ 5] / answers: 1 / hits: 18382 / 12 Years ago, thu, january 31, 2013, 12:00:00

I'm trying to get an existing user document using mongoose with express but I only get this:

/webroot/api.domain.com/production/node_modules/mongoose/lib/document.js:162

      if (obj && '_id' in obj) continue;

                          ^

TypeError: Cannot use 'in' operator to search for '_id' in Account

    at model.Document._buildDoc (/webroot/api.domain.com/production/node_modules/mongoose/lib/document.js:162:27)

    at model.Document (/webroot/api.domain.com/production/node_modules/mongoose/lib/document.js:67:20)

    at model.Model (/webroot/api.domain.com/production/node_modules/mongoose/lib/model.js:33:12)

    at new model (/webroot/api.domain.com/production/node_modules/mongoose/lib/model.js:1663:11)

    at Object.model (/webroot/api.domain.com/production/node_modules/mongoose/lib/model.js:1662:14)

    at Object.findOrCreateOneForTwitter (/webroot/api.domain.com/production/models/account.coffee:60:17)

    at module.exports.callback.error (/webroot/api.domain.com/production/endpoints/twitter.coffee:67:34)

    at Twitter.get (/webroot/api.domain.com/production/node_modules/ntwitter/lib/twitter.js:85:7)

    at passBackControl (/webroot/api.domain.com/production/node_modules/oauth/lib/oauth.js:361:11)

    at IncomingMessage.exports.OAuth._performSecureRequest.request.on.callbackCalled (/webroot/api.domain.com/production/node_modules/oauth/lib/oauth.js:380:9)

Is there any known fix for that? Thanks.

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isham

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answered 12 Years ago allans · Accepted Answer

This error is not specific to Mongoose; it would show if obj is not an object, but a string for instance:

var obj = 'Account';

'id' in obj;

// TypeError: Cannot use 'in' operator to search for 'id' in Account

Assuming that it's not a Mongoose issue, you'd be looking somewhere here:

at Object.findOrCreateOneForTwitter 

    (/webroot/api.domain.com/production/models/account.coffee:60:17)