如何在猫鼬的数组中推送子文档？

Question

我正在尝试在主题中添加一系列步骤。但每次我发出一个帖子请求。它只存储一个带有 _id 的空数组。 这是我的模型：

const mongoose = require('mongoose');
//const Step = require('./Step');

const StepSchema = mongoose.Schema({
    title: String,
    status: String,
    date: {
        type: Date,
        default: Date.now
    }
});

const TopicSchema = mongoose.Schema({
    name: String,
    description: String,
    steps: [StepSchema],
    date: {
        type: Date,
        default: Date.now
    }
});

module.exports = mongoose.model('Topic', TopicSchema);

这是我的 router.js：

const express = require('express');
const router = express.Router();
const Topic = require('../models/Topic');

router.post('/', async (req, res) => {
    const topic = new Topic({
        name: req.body.name,
        description: req.body.description,
    });
    topic.steps.push({
        title: req.body.title,
        status: req.body.status
    })
    try {
        const saveTopic = await topic.save();
        res.json(saveTopic);
    } catch (err) {
        res.json({ message: err });
    }
});

module.exports = router;

这是我的邮递员请求：

{
    "name": "t",
    "description": "y",
    "steps": {
        "title": "a",
        "status": "b"
    }
}

提前致谢。

Answer 1

在您的 POSTMAN 请求中，标题和状态包含在 steps 对象中。

你需要做的：

topic.steps.push({
    title: req.body.steps.title,
    status: req.body.steps.status
});

代替：

topic.steps.push({
    title: req.body.title,
    status: req.body.status
});