好久没玩laravel了，5.6玩下（三）

好了，基础的测试通了，咱们开始增删改了

思路整理

先创建项目功能控制器

然后设置路由访问规则

然后开发项目的增删改功能

1 先创建项目的控制器

php artisan make:controller ProjectsController

生成的文件在 blog\app\Http\Controllers 这个目录下

2 设置路由访问规则，找到文件 blog\app\routes\web.php 添加如下代码

Route::resource('projects', 'ProjectsController');Route::get('projects/show/{id}', 'ProjectsController@show');

意思是可以访问projects的控制器

3 填充项目控制器

blog\app\http\Controllers\ProjectsController

<?phpnamespace App\Http\Controllers;use Illuminate\Http\Request;
use App\Projects;class ProjectsController extends Controller
{/***保存*/public function store(Request $request){$projects = new Projects;$projects->name = $request->input('name');$projects->author = $request->input('author');$projects->description = $request->input('description');if ($projects->save()) {return redirect('projects');} else {return back()->withInput()->withErrors('添加失败，请重试');}}//更新public function update(Request $request,$id){$projects = Projects::find($id); $projects->name = $request->input('name');$projects->author = $request->input('author');$projects->description = $request->input('description');if ($projects->save()) {return redirect('projects');} else {return back()->withInput()->withErrors('更新失败，请重试');}}//添加public function create(){return view('projects.create');}//编辑public function edit($id){$project=Projects::find($id);return view('projects.edit',compact('project'));}//删除public function destroy($id){$project = Projects::find($id);$project->delete();return redirect('projects');}//列表public function index(){$projects = Projects::all();return view('projects.index',compact('projects'));}//显示public function show($id){$project=Projects::find($id);return view('projects.show',compact('project'));}
}

4 设置模板页

模板页面位置在blog\resources\views 这个位置

1）在views\layouts\app.blade.php 改成如下代码

<!DOCTYPE html>
<html lang="{{ str_replace('_', '-', app()->getLocale()) }}">
<head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1"><!-- CSRF Token --><meta name="csrf-token" content="{{ csrf_token() }}"><title>{{ config('app.name', 'Laravel') }}</title><!-- Scripts --><script src="{{ asset('js/app.js') }}" defer></script><!-- Fonts --><link rel="dns-prefetch" href="https://fonts.gstatic.com"><link href="https://fonts.googleapis.com/css?family=Raleway:300,400,600" rel="stylesheet" type="text/css"><!-- Styles --><link href="{{ asset('css/app.css') }}" rel="stylesheet">
</head>
<body><div id="app"><nav class="navbar navbar-expand-md navbar-light navbar-laravel"><div class="container"><a class="navbar-brand" href="{{ url('/') }}">{{ config('app.name', 'Laravel') }}</a><button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="{{ __('Toggle navigation') }}"><span class="navbar-toggler-icon"></span></button><div class="collapse navbar-collapse" id="navbarSupportedContent"><!-- Left Side Of Navbar --><ul class="navbar-nav mr-auto">                       <li><a href="/home">后台首页&nbsp;&nbsp;&nbsp;&nbsp;</a></li><li><a href="/projects">管理项目</a></li></ul><!-- Right Side Of Navbar --><ul class="navbar-nav ml-auto"><!-- Authentication Links -->@guest<li class="nav-item"><a class="nav-link" href="{{ route('login') }}">{{ __('Login') }}</a></li><li class="nav-item"><a class="nav-link" href="{{ route('register') }}">{{ __('Register') }}</a></li>@else<li class="nav-item dropdown"><a id="navbarDropdown" class="nav-link dropdown-toggle" href="#" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" v-pre>{{ Auth::user()->name }} <span class="caret"></span></a><div class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdown"><a class="dropdown-item" href="{{ route('logout') }}"onclick="event.preventDefault();document.getElementById('logout-form').submit();">{{ __('Logout') }}</a><form id="logout-form" action="{{ route('logout') }}" method="POST" style="display: none;">@csrf</form></div></li>@endguest</ul></div></div></nav><main class="py-4">@yield('content')</main></div>
</body>
</html>

其实就是在顶部增加2个链接一个项目管理一个后台首页其他都是原来的代码

2）

我们新建一个projects文件夹

新建4个模板文件

create.blade.php

@extends('layouts.app')@section('content')
<div class="container">  <div class="row"><div class="col-md-10 col-md-offset-1"><div class="panel panel-default"><div class="panel-heading">新增项目</div><div class="panel-body">@if (count($errors) > 0)<div class="alert alert-danger"><strong>Whoops!</strong> There were some problems with your input.<br><br><ul>@foreach ($errors->all() as $error)<li>{{ $error }}</li>@endforeach</ul></div>@endif<form action="{{ URL('projects') }}" enctype="multipart/form-data" method="POST"><input type="hidden" name="_token" value="{{ csrf_token() }}">项目标题：<input type="text" name="name" class="form-control" required="required"><br>项目作者：<input type="text" name="author" class="form-control" required="required"><br>项目内容： <textarea name="description" rows="10" class="form-control"></textarea><br><button class="btn btn-lg btn-info">新增项目</button></form></div></div></div></div>
</div>  
@endsection

edit.blade.php

@extends('layouts.app')@section('content')
<div class="container">  <div class="row"><div class="col-md-10 col-md-offset-1"><div class="panel panel-default"><div class="panel-heading">编辑项目</div><div class="panel-body">@if (count($errors) > 0)<div class="alert alert-danger"><strong>Whoops!</strong> There were some problems with your input.<br><br><ul>@foreach ($errors->all() as $error)<li>{{ $error }}</li>@endforeach</ul></div>@endif<form action="{{ URL('projects/'.$project->id) }}" enctype="multipart/form-data" method="POST"><input name="_method" type="hidden" value="PUT"><input type="hidden" name="_token" value="{{ csrf_token() }}">项目标题：<input type="text" name="name" class="form-control" required="required" value="{{ $project->name }}"><br>项目作者：<input type="text" name="author" class="form-control" required="required" value="{{ $project->author }}">      <br><br>项目内容：<textarea name="description" rows="10" class="form-control" required="required">{{ $project->description }}</textarea><br><button class="btn btn-lg btn-info">编辑项目</button></form></div></div></div></div>
</div>  
@endsection

index.blade.php

@extends('layouts.app')@section('content')
<div class="container">  <div class="row"><div class="col-md-10 col-md-offset-1"><div class="panel panel-default"><div class="panel-heading">管理项目</div><div class="panel-body"><a href="{{ URL('projects/create') }}" class="btn btn-lg btn-primary">新增</a><table class="table table-striped"><tr class="row"><th class="col-lg-2">标题</th><th class="col-lg-2">作者</th><th class="col-lg-4">查看</th><th class="col-lg-1">编辑</th><th class="col-lg-1">删除</th></tr>@foreach ($projects as $project)<tr class="row"><td class="col-lg-2">{{ $project->name }}</td><td class="col-lg-2">{{ $project->author }}</td><td class="col-lg-4"><a href="{{ URL('projects/show/'.$project->id) }}" target="_blank">{{ App\Projects::find($project->id)->name }}</a></td><td class="col-lg-1"><a href="{{ URL('projects/'.$project->id.'/edit') }}" class="btn btn-success">编辑</a></td><td class="col-lg-1"><form action="{{ URL('projects/'.$project->id) }}" method="POST" style="display: inline;"><input name="_method" type="hidden" value="DELETE"><input type="hidden" name="_token" value="{{ csrf_token() }}"><button type="submit" class="btn btn-danger">删除</button></form></td></tr>@endforeach</table></div></div></div></div>
</div>  
@endsection

show.blade.php

@extends('layouts.app')@section('content')
<div class="container"> <div class="row"><div class="col-md-10 col-md-offset-1"><div class="panel panel-default"><div class="panel-heading">显示项目</div><div class="panel-body">@if (count($errors) > 0)<div class="alert alert-danger"><strong>Whoops!</strong> There were some problems with your input.<br><br><ul>@foreach ($errors->all() as $error)<li>{{ $error }}</li>@endforeach</ul></div>@endif<input name="_method" type="hidden" value="PUT"><input type="hidden" name="_token" value="{{ csrf_token() }}">项目标题：{{ $project->name }}<br>项目作者：{{ $project->author }}<br>            <br><br>项目内容：{{ $project->description }}<br></div></div></div></div>
</div> 
@endsection