Question

我用猫鼬写了2个模型。首先是用户，另一个是电影。我在下面写了这个模型。首先，我将所有用户保存在用户集合中。之后，我要将电影保存到电影收藏中。但是当我要定义我的导演字段时，出现错误“ ReferenceError：未定义导演”

const userSchema = new Schema({
imdbId: String,
name: String,

});
var User = mongoose.model('user', userSchema);

const movieSchema = new Schema({
imdbId: String,
title: String,
rank: Number,
year: Number,
stars:[{
    type: Schema.Types.ObjectId,
    ref: 'userSchema'

}],
director:{
    type: Schema.Types.ObjectId,
    ref: 'userSchema'

}
});
var Movie = mongoose.model('movie', movieSchema);

module.exports = {Movie, User}

这是我的功能：

 async function findObjectIdByImdbId(str) {
const result = await User.findOne({ imdbId: str})
return result._id

}


 async function insertMovieToDb (obj) {


var movie = new Movie ({
    imdbId: obj.id,
    title: obj.name,
    rank: obj.rank,
    rating: obj.rating,
    year: obj.year,
    director: await findObjectIdByImdbId(obj.director)
})

await movie.save(function(err) {
    if (err) {console.log(err)
        return
    }})
  }
  insertJsonFileToDb().catch(console.log)

Answer 1

将await findObjectIdByImdbId(obj.director)从电影初始化中移出

例如

var directorObjId = await findObjectIdByImdbId(obj.director);
var movie = new Movie ({
    imdbId: obj.id,
    title: obj.name,
    rank: obj.rank,
    rating: obj.rating,
    year: obj.year,
    director: directorObjId
})

如何在nodejs中使用objectId

1 个答案: