为什么我的 model 不能使用 mongoose 和 mongodb 保存？

Question

I have a simple Post model and a route to create posts at. When I create one using postman, it loads for a bit and then I get the error json back. A model is never saved.

here is the model:

const PostSchema = mongoose.Schema({
    title: {
        type: String,
        required: true
    },
    body: {
        type: String,
        required: true
    },
    data: {
        type: Date,
        default: Date.now
    }

});

here is the route:

router.post('/', (req, res) => {

    console.log(req.body.title);
    console.log(req.body.body);

    const post = new Post({
        title: req.body.title,
        body: req.body.body
    });

    post.save()
    .then(data => {
        console.log(data);
        res.json(post);
    })
    .catch(err => {
        res.json({
            error: err
        });
    });
});

Everything needed is imported. Please help!

Answer 1

Try using a try{}catch{} like this let me know if there is still an error

router.post("/", (req, res) => {
  try {
    const post = new Post({
      title: req.body.title,
      body: req.body.body,
    });

    post.save();
    res.status(200).send(`Post created!`);
  } catch (err) {
    res.status(400).send({ message: err });
  }
});

Also check your model is being exported

const PostSchema = mongoose.Schema({
    title: {
        type: String,
        required: true
    },
    body: {
        type: String,
        required: true
    },
    data: {
        type: Date,
        default: Date.now
    }

});

module.exports = mongoose.model("Post", PostSchema);