Javascript 猫鼬填充文档
我在mongoose中得到了3个数据库模型,如下所示:Javascript 猫鼬填充文档,javascript,mongodb,mongoose,Javascript,Mongodb,Mongoose,我在mongoose中得到了3个数据库模型,如下所示: //profile.js var ProfileSchema = new Schema({ username: { type: String, required: true }, password: { type: String, required: true }, matches: [{ type: Schema.Ty
//profile.js
var ProfileSchema = new Schema({
username: { type: String, required: true },
password: { type: String, required: true },
matches: [{ type: Schema.Types.ObjectId, ref: 'Match' }]
});
//match.js
var MatchSchema = new Schema({
scores: [{ type: Schema.Types.ObjectId, ref: 'Score', required: true }],
});
//score.js
var ScoreSchema = new Schema({
score: {type: Number, required: true},
achivement: [{type: String, required: true}],
});
我试着用
Profile.findOne({ _id: mongoose.Types.ObjectId(profile_id) })
.populate('matches')
.populate('matches.scores')
.exec(function(err, profile) {
if (err) {...}
if (profile) {
console.log(profile);
}
});
比赛被填充,但是我没有得到要填充的比赛的分数。这是猫鼬不支持的还是我做错了什么?他给了我这个:
{
user_token: "539b07397c045fc00efc8b84"
username: "username002"
sex: 0
country: "SE"
friends: []
-matches: [
-{
__v: 1
_id: "539eddf9eac17bb8185b950c"
-scores: [
"539ee1c876f274701e17c068"
"539ee1c876f274701e17c069"
"539ee1c876f274701e17c06a"
]
}
]
}
但是我想在匹配数组中填充分数数组。我能这样做吗?是的,你说得对。我尝试使用填充的链接,但得到了相同的输出 对于您的查询,请使用下面提到的方法,然后进行填充 有关更多详细信息,请查看此代码。根据您的查询,它是一个工作的、经过测试的示例代码。请仔细阅读注释代码,以便更好地理解下面的代码和提供的代码段链接
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//Find the profile and populate all matches related to that profile
Profile.findOne({
_id: mongoose.Types.ObjectId(profile_id)
})
.populate('matches')
.exec(function(err, profile) {
if (err) throw err;
//We got the profile and populated matches in Array Form
if (profile) {
// Now there are multiple Matches
// We want to fetch score of each Match
// for that particular profile
// For each match related to that profile
async.forEach(profile.matches, function(match) {
console.log(match, 'match')
// For each match related to that profile
// Populate score achieved by that person
Match.find({
_id:match.id
})
.populate('scores', 'score')
.exec(function (err, score) {
if (err) throw err;
// here is score of all the matches
// played by the person whose profile id
// is passed
console.log(score);
})
})
}
});
Profile.findOne({ _id: mongoose.Types.ObjectId(profile_id) })
.populate('matches.scores')
.exec(function(err, profile) {
if (err) {...}
if (profile) {
console.log(profile);
}
});