Question

我在Mongoose.js中收到以下错误。它不会一直发生，有时候也不会发生。

TypeError: this.isSelected is not a function 
    at model.Model.$__version (/app/node_modules/mongoose/lib/model.js:589:13) 
    at model.Model.$__delta (/app/node_modules/mongoose/lib/model.js:511:10) 
    at model.Model.$__handleSave (/app/node_modules/mongoose/lib/model.js:147:22) 
    at model.Model.$__save (/app/node_modules/mongoose/lib/model.js:185:9) 
    at model.Model.save (/app/node_modules/mongoose/lib/model.js:283:15) 
    at model._done (/app/node_modules/mongoose/node_modules/hooks-fixed/hooks.js:101:24) 
    at _next (/app/node_modules/mongoose/node_modules/hooks-fixed/hooks.js:64:28) 
    at fnWrapper (/app/node_modules/mongoose/node_modules/hooks-fixed/hooks.js:186:8) 
    at model.Object.defineProperty.value.fn (/app/node_modules/mongoose/lib/schema.js:221:11) 
    at _next (/app/node_modules/mongoose/node_modules/hooks-fixed/hooks.js:62:30) 
    at fnWrapper (/app/node_modules/mongoose/node_modules/hooks-fixed/hooks.js:186:8) 
    at /app/node_modules/mongoose/lib/schema.js:196:17 
    at /app/node_modules/mongoose/node_modules/kareem/index.js:127:16 
    at wrapped (/app/node_modules/newrelic/lib/transaction/tracer/index.js:161:28) 
    at nextTickCallbackWith0Args (node.js:420:9) 
    at process._tickDomainCallback [as _tickCallback] (node.js:390:13)

我认为产生该错误的相关代码如下：

exports.updateTheme = function(req, res) {
  var theme = req.theme;
  delete req.body.created;
  delete req.body.modified;
  delete req.body.user;
  delete req.body._id;

  theme.modified = new Date().getTime();
  theme = _.extend(theme, req.body);
  theme.markModified('copyMinNumericalAttsColorNodes');
  theme.markModified('copyMaxNumericalAttsColorNodes');
  theme.save(function(err, theme) {
    if(err) {
      console.log(err);
      res.status(500).send(err);
    } else {
      res.json(theme);
    }
  });
};

我真的很感激任何关于可能产生此错误的想法。谢谢！

Answer 1

将代码更改为以下似乎可以解决问题：

def temp(x):      
    return sum(v for k, v in Counter(x).items() if k.lower() in 'aeiuo')

this.isSelected不是Mongoose.js中的函数错误

1 个答案: