如何对nodeJS rest api中的对象ID数组进行适当的验证

Question

我目前正在努力在nodeJS，mongoDB，express中实现rest api构建。字段之一采用对象ID数组（模型项目中的字段sprint）。问题是在执行post方法时如何在路由文件（projects.js）中进行正确的验证（请记住，不需要字段sprint）？

我试图检查typeof req.body.sprints并对此进行lenght，但没有结果。我也在试图找到关于stackoverflow等的答案，但没有遇到类似的问题。

project.js（模型文件）

const mongoose = require("mongoose");

const Project = mongoose.model(
    "Project",
    new mongoose.Schema({
        name: {
...
        sprints: [
            {
                type: new mongoose.Schema({
                    name: {
                        type: String,
                        required: true,
                        minlength: 5,
                        maxlength: 255
                    },
                    isClosed: { type: Boolean, default: false }
                })
            }
        ]
    })
);

function validateProject(project) {
    const schema = {
        name: Joi.string()
            .min(5)
            .max(255)
            .required(),
        createdBy: Joi.objectId().required(),
        isClosed: Joi.boolean(),
        sprints: Joi.array().items(Joi.objectId())
    };

    return Joi.validate(project, schema);
}

exports.Project = Project;
exports.validate = validateProject;

projects.js（路由文件）

const express = require("express");
const { User } = require("../models/user");
const { Sprint } = require("../models/sprint");
const { Project, validate } = require("../models/project");
const router = express.Router();

...

/* POST project */
router.post("/", async (req, res) => {
    const { error } = validate(req.body);
    if (error) return res.status(400).send(error.details[0].message);

    const user = await User.findById(req.body.createdBy);
    if (!user) return res.status(400).send("Invalid user");

    const sprint = await Sprint.findById(req.body.sprints);
    if (!sprint) return res.status(400).send("Invalid sprint");
    //i think that here i have to validate if sprint has even one 
    element and only then do object id validation

    const project = new Project({
        name: req.body.name,
        createDate: req.body.createDate,
        createdBy: { _id: user._id, name: user.name },
        isClosed: req.body.isClosed,
        sprints: [
            {
                _id: sprint._id,
                name: sprint.name,
                isClosed: sprint.isClosed
            }
        ]
    });
    await project.save();

    res.send(project);
});

...

module.exports = router;

在我的发布方法中，我正在检查表Sprint中是否存在给定的ID，但是如果没有提供Sprint ID（我收到“无效的Sprint”消息），我会遇到问题。预期结果将是：我可以提供一组sprint，一个sprint或根本不提供。

Answer 1

尝试一下

function validateProject(project) {
    const schema = {
        name: Joi.string()
            .min(5)
            .max(255)
            .required(),
        createdBy: Joi.objectId().required(),
        isClosed: Joi.boolean(),
        sprints: Joi.object().keys({
            Joi.array().items(
                Joi.object({
                    name: Joi.string(),
                    isClosed: Joi.boolean
                })
            )
        })
    };

    return Joi.validate(project, schema);
}