我在哪里可以找到我的数据库 URL 以在数据库中成功存储项目？

Question

我正在按照本教程https://appdividend.com/2018/03/23/react-js-laravel-file-upload-tutorial/ 将图像文件路径存储在 MySQL DB 中。

在我的 axios 发布请求中，URL 是一个虚拟的。如何找出我的数据库的 URL 是什么？我似乎在任何地方都找不到它。如果这很重要，我正在使用 MySQL 工作台。

import React, { Component } from 'react';
import axios, { post } from 'axios';

class Wall extends Component {
    constructor(props) {
        super(props);

        this.state = {
            image: ''
        };

        this.onFormSubmit = this.onFormSubmit.bind(this);
        this.onChange = this.onChange.bind(this);
        this.fileUpload = this.fileUpload.bind(this);
    }

    onFormSubmit(e) {
        e.preventDefault();
        this.fileUpload(this.state.image);
    }

    onChange(e) {
        let files = e.target.files || e.dataTransfer.files;
        if(!files.length) {
            return;
        }

        this.createImage(files[0]);
    }

    createImage(file) {
        let reader = new FileReader();
        reader.onload = (e) => {
            this.setState({
                image: e.target.result
            });
        };
        reader.readAsDataURL(file);
    }

    fileUpload(image){
        const url = 'http://localhost:8000/api/fileupload';
        const formData = {file: this.state.image};
        return  axios.post(url, formData)
            .then(response => console.log(response));
    }

    render() {
        return (
            <div>
                <h1>File Upload</h1>
                <input type="file" />
                <button type="submit">Upload</button>
            </div>
        );
    }
}

export default Wall;

这是我的 FileUploadController.php 文件：

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class FileuploadController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        //
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        //
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        if($request->get('file'))
        {
            $image = $request->get('file');
            $name = time().'.' . explode('/', explode(':', substr($image, 0, strpos($image, ';')))[1])[1];
            \Image::make($request->get('file'))->save(public_path('images/').$name);
        }



        $fileupload = new Fileupload();
        $fileupload->filename=$name;
        $fileupload->save();
        return response()->json('Successfully added');

    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show($id)
    {
        //
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit($id)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, $id)
    {
        //
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id)
    {
        //
    }
}

Answer 1

转到您的config/app.php 并查找aliases 'DB' => Illuminate\Support\Facades\DB::class

您可以通过以下方式将其用于您的控制器：

use DB; 

见下文

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use DB;

class FileuploadController extends Controller
{

    // ......

}

并在此处查看有关DB 查询的更多详细信息https://laravel.com/docs/5.8/queries