Question

我正在使用node.js开发一个网页并进行表达。我开发了一种表单，用户可以在其中填写自己的详细信息并上传其图像。图像文件应存储在目录中，而路径应存储在数据库中。

我正在将Node.js与mongodb数据库一起使用。该图像已成功存储在预期目录中，但该路径未存储在数据库中而不是路径中，我发现了用于在数据库中存储该路径的代码（/posts/${image.name} ，请问我该如何实现？

{

//Index.js

const path = require('path');
const express = require('express');
const mongoose = require('mongoose');
const bodyParser = require('body-parser');
const Post = require('./database/models/Post');
const fileUpload = require("express-fileupload");

const app = new express();
mongoose.connect('mongodb://localhost/node-js-test-blog', {   useNewUrlParser: true })
app.use(express.static('public'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(fileUpload());

//the route responsible for storing the image in  posts directory and the path in the database

app.post('/posts/store', (req, res) => {
const { image } = req.files
image.mv(path.resolve(__dirname, 'public/posts', image.name), (error) => {

    Post.create({
        ...req.body,
        image: '/posts/${image.name}'//this code is what I get in the database instead of the path
    }, (error, post) => {
        res.redirect("/");
    });
})
});
app.listen(4000, () => {
console.log("application listening on port 4000")
})

}

//model
const mongoose = require('mongoose');
//collections represents entities in the application e.g users, posts, etc
//schema represents how to structure in the collections
const PostSchema = new mongoose.Schema({
description: String,
title: String,
content: String,
username: String,
image: String,
createdAt: {
    type: Date,
    default: new Date()
}
});

//the model itself is what will communicate with the database
const Post = mongoose.model('Post', PostSchema);


module.exports = Post;

}

//the code to display the (image) view from the database using node.js directive
<style="background-image: url('{{post.image}}')">

}

Answer 1

使用${}时需要使用反引号，否则字符串将按字面意义进行解释：

更改此：

    image: '/posts/${image.name}'

对此：

    image: `/posts/${image.name}`

如何使用Node.js在数据库中保存图像路径？

1 个答案: