如何在 laravel 6 上上传图片？

Question

我试图在 laravel 6 上编辑图像，但它没有前进到下一个视图，停留在表单视图上。我看过很多 laravel 5.8 和 6 的教程。我无法让它以任何方式工作这是 de 控制器： public function update(Request $request, $id){    $validator = $request->validate([       'titulo' => 'required | max:50', //campo obligatorio y máximo 50 caracteres       'contenido' => 'required | max:150',        'imagen' => 'required|image|mimes:jpeg,png,jpg,gif,svg|max:4096',    ]);     $image_name = time().'.'.$request->imagen->getClientOriginalExtension();     $request->image->move(public_path('images'), $image_name);     $datos = array(        'titulo' => $request->titulo,        'contenido' => $request->contenido,        'imagen' => $image_name,    );    Noticia::whereId($id)->update($datos);    return redirect('/mostrar');}这是 Web.php 文件：Route::get('/actualizar/{id}', 'crearNoticiaController@update')->name('actualizar');Route::get('/editar/{id}', 'crearNoticiaController@edit')->name('editar');这是表格文件：<div class="subir-imagen">    <form method="get" action="{{ route('actualizar', $noticia->id) }}"  enctype="multipart/form-data">        @csrf           <div class="crear-titulo">            <input class="titulo" type="text" name="titulo" placeholder="Escriba el titulo" value="{{$noticia->titulo}}">        </div>        <div class="crear-contenido">            <textarea  class="ckeditor" name="contenido" placeholder="Escriba el contenido" >                {{$noticia->contenido}}            </textarea>        </div>        <table border="2">            <tr>                <td><img src="{{URL::to('/')}}/images/{{$noticia->imagen}}" alt="imagen" width="250" align="left"/></td>            </tr>        </table>

Answer 1

我用这种方式解决了：

在 web.php 我把补丁而不是得到

Route::patch('/actualizar/{id}', 'crearNoticiaController@update')->name('actualizar');

在我输入的编辑刀片中：@method('PATCH')

这是控制器中的更新：

 public function update(Request $request, $id)

{

    $noticia = Noticia::findOrFail($id);

    $noticia->titulo = $request->get('titulo'); 

    $noticia->contenido = $request->get('contenido');

    $noticia->imagen = $request->file('imagen');

    $validator = $request->validate([

       'imagen' => 'required|image|mimes:jpeg,png,jpg,gif,svg|max:4096',

    ]);

    $imageName = time().'.'.request()->imagen->getClientOriginalExtension();

    request()->imagen->move(public_path('images'), $imageName);

    $noticia->imagen = $imageName;

    $noticia->update();

    return redirect('/mostrar'); //Redirigimos a la la vista para mostrar las noticias 

}

Answer 2

我遇到了同样的问题，但幸运的是我解决了这个问题。我在下面添加了我的解决方案，我认为这会帮助你解决这个问题

   public function updatePost(Request $request, $id)

   {

    $validatedData = $request->validate([

        'title' => 'required|unique:posts|max:25|min:4',

        'image' => 'mimes:jpeg,jpg,png,JPEG,JPG,PNG | max:100000',

    ]);

    $data = array();

    $data['category_id'] = $request->category_id;

    $data['title'] = $request->title;

    $data['details'] = $request->details;

    $image = $request->file('image');

    if($image)

    {

        $image_name = hexdec(uniqid());

        $ext = strtolower($image->getClientOriginalExtension());

        $image_full_name = $image_name.'.'.$ext;

        $upload_path = 'public/assets/img/';

        $image_url = $upload_path.$image_full_name;

        $success = $image->move($upload_path,$image_full_name);

        $data['image'] = $image_url;

        unlink($request->old_photo);

        $posts = DB::table('posts')->where('posts.id', $id)->update($data);

        if($posts)

        {

            return Redirect()->route('all.posts')->with('success','Posts are inserted successfully');

        }

        else

        {

            return back()->with('error', 'Posts are not inserted successfully');

        }

    }

    else

    {

        $data['image'] = $request->old_photo;

        $posts = DB::table('posts')->where('posts.id', $id)->update($data);

        if($posts)

        {

            return Redirect()->route('all.posts')->with('success','Posts are inserted successfully');

        }

        else

        {

            return back()->with('error', 'Posts are not inserted successfully');

        }

    }

}

edit_post.blade.php

@extends('welcome')

@section('content')

<div class="container">

<div class="row">

  <div class="col-lg-8 col-md-10 mx-auto">

    <p>

      <a href="{{ route('all.posts') }}" class="btn btn-danger">List Posts</a>

    </p>

    @if ($errors->any())

    <div class="alert alert-danger">

        <ul>

            @foreach ($errors->all() as $error)

                <li>{{ $error }}</li>

            @endforeach

        </ul>

    </div>

    @endif

<form action="{{ url('posts.update_posts/'.$posts->id) }}" method="post" enctype="multipart/form-data">

    @csrf

        <div class="control-group">

            <div class="form-group floating-label-form-group controls">

              <div>Category Name</div>

              <label>Category ID</label>

             <select class="form-control" name="category_id">

               @foreach($category as $categories)

             <option value="{{ $categories->id }}" <?php if ($categories->id == $posts->category_id)

                echo "selected"; ?> > {{ $categories->name }} </option>

                @endforeach

             </select>

              <p class="help-block text-danger"></p>

            </div>

        </div>

      <div class="control-group">

        <div class="form-group floating-label-form-group controls">

          <label>Product Title</label>

        <input type="text" name="title" class="form-control" value="{{ $posts->title }}" id="title" required data-validation-required-message="Please product name.">

          <p class="help-block text-danger"></p>

        </div>

      </div>

      <div class="control-group">

        <div class="form-group floating-label-form-group controls">

          <label>Details</label>

          <textarea name="details" rows="5" class="form-control" value="{{ $posts->details }}" id="details"></textarea>

          <p class="help-block text-danger"></p>

        </div>

      </div>

      <div class="control-group">

        <div class="form-group floating-label-form-group controls">

          <label>Product Image</label>

          <input type="file" name="image" class="form-control" id="image"><br/>

        Old Image : <img src="{{ URL::to($posts->image) }}" style="hight: 40px; width: 100px">

        <input type="hidden" name="old_photo" value="{{ $posts->image }}">

        </div>

      </div>

      <br>

      <div id="success"></div>

      <div class="form-group">

        <button type="submit" class="btn btn-success" id="sendMessageButton">Update</button>

      </div>

    </form>

  </div>

</div>

</div>

@endsection

Answer 3

首先在您的项目控制台命令上运行：

php artisan storage:link

然后尝试此代码，如果返回任何错误消息，请告诉我 khow：

$imagen = $request->file("imagen");

$extension = $imagen->extension();

$filename = time().".".$extension;

$request->file('imagen')->storeAs("public/images", $filename);

最后检查您的public/images文件夹中是否存在图像文件。