我正在嘗試在前端顯示我帖子的作者姓名。所以我想根據它的用戶ID找到帖子。但在模型模式中,我在后模式中使用了用戶的物件 ID。這是我的用戶架構:
const mongoose = require('mongoose');
// user schema
const userSchema = new mongoose.Schema(
{
email: {
type: String,
trim: true,
required: true,
unique: true,
lowercase: true
},
name: {
type: String,
trim: true,
},
password: {
type: String,
required: true
},
salt: String,
bio: {
type: String,
trim: true
},
role: {
type: String,
default: 'subscriber'
},
resetPasswordToken: String,
resetPasswordExpire: Date,
},
{
timestamps: true
}
);
module.exports = mongoose.model('User', userSchema);
這是我的 postSchema 模型:
const mongoose = require("mongoose");
const PostSchema = new mongoose.Schema({
title: {
type: String,
required: true,
},
content: {
type: String,
required: true,
},
comments: [{
text: String,
created: { type: Date, default: Date.now },
postedBy: { type: mongoose.Schema.ObjectId, ref: 'User'}
}],
created: {
type: Date,
default: Date.now
},
creator: {
type: mongoose.Schema.Types.ObjectId,
ref: "User",
},
},
{
timestamps: true,
},
);
const Post = mongoose.model("Post", PostSchema);
module.exports = Post;
這是我的路由器,用于按特定用戶 ID 列出的帖子串列:
exports.postByUser=async(req,res)=>{
try
{
const userID=async()=>{
await User.findById({ _id:req.params.id})
.then(posts=>{
res.status(200).json(posts.name)
})
}
await Post.find({creator: req.params.id})
.then(posts=>{
res.status(200).json(posts)
})
}catch(error){
res.status(500).send({error: error.message});
};
}
router.route('/post/mypost/:id').get(requireSignin,postByUser);
我的目標是獲得一個帖子串列,其中每個帖子的創建者都有用戶名。我怎樣才能在nodejs中實作這一點?
uj5u.com熱心網友回復:
我已經這樣解決了:
exports.postByUser=async(req,res)=>{
try
{
await Post.find({creator: req.params.id})
.populate({path:'creator', select:'name -_id'})
.then(post=>{
res.status(200).json(post)
})
}catch(error){
res.status(500).send({error: error.message});
};
}
它奏效了
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