TypeError: Cannot read property 'length' of undefined
在执行这段代码：
_movie.save(function(err, movie){
if (err) {
console.log(err)
}
res.redirect('/movie/' + movie._id)
})
然后出现如下错误：
TypeError: Cannot read property 'length' of undefined
at eval (eval at <anonymous> (G:\git\Imovie\node_modules\jade\lib\index.js:216:8), <anonymous>:93:31)
at eval (eval at <anonymous> (G:\git\Imovie\node_modules\jade\lib\index.js:216:8), <anonymous>:370:4)
at eval (eval at <anonymous> (G:\git\Imovie\node_modules\jade\lib\index.js:216:8), <anonymous>:386:22)
at res (G:\git\Imovie\node_modules\jade\lib\index.js:217:38)
at Object.exports.renderFile (G:\git\Imovie\node_modules\jade\lib\index.js:360:38)
at View.exports.renderFile [as engine] (G:\git\Imovie\node_modules\jade\lib\index.js:350:21)
at View.render (G:\git\Imovie\node_modules\express\lib\view.js:93:8)
at EventEmitter.app.render (G:\git\Imovie\node_modules\express\lib\application.js:530:10)
at ServerResponse.res.render (G:\git\Imovie\node_modules\express\lib\response.js:933:7)
at Promise.<anonymous> (G:\git\Imovie\app.js:40:8)
