我有一个创建表单，其中包含一些字段，例如：名称、价格、类别……以及图像文件的输入字段。
这是我的 create.blade.php ：
@extends('layouts.app')
@section('content')
<div class="container">
<div class="card mt-5">
<div class="card-body">
<div class="card-title">
create product
</div>
</div>
</div>
<form method="post" action="{{route('books.store')}}" enctype="multipart/form-data">
{{csrf_field()}}
<div class="form-group">
<label for="name">Name</label>
<input type="text" class="form-control" name="name" id="name" aria-describedby="emailHelp" value="{{old('name')}}" placeholder="Enter name">
</div>
<div class="form-group">
<label for="pages">pages</label>
<input type="text" class="form-control" id="pages" name="pages" value="{{old('pages')}}" placeholder="pages">
</div>
<div class="form-group">
<label for="ISBN">ISBN</label>
<input type="text" class="form-control" id="ISBN" name="ISBN" value="{{old('ISBN')}}" placeholder="ISBN">
</div>
<div class="form-group">
<label for="price">price</label>
<input type="text" class="form-control" id="price" name="price" value="{{old('price')}}" placeholder="price">
</div>
<div class="form-group">
<label for="published_at">published_at</label>
<input type="date" class="form-control" id="published_at" name="published_at" value="{{old('published_at')}}" placeholder="published_at">
</div>
<div class="form-group">
<label for="published_at">انتخاب تصویر</label>
<input type="file" name="file" id="file">
</div>
<div class="form-group">
<label for="category_id">CATEGORY ID</label>
<select name="category_id[]" class="form-control" multiple>
@foreach($categories as $category)
<option value="{{$category->id}}">
{{$category->name}}
</option>
@endforeach
</select>
</div>
<div class="form-group">
<label for="author_id"> Author</label>
<select name="author_id[]" class="form-control" multiple>
@foreach($authors as $author)
<option value="{{$author->id}}">
{{$author->name}}
</option>
@endforeach
</select>
</div>
@if ($errors->any())
<div class="alert alert-danger">
<ul>
@foreach ($errors->all() as $error)
<li>{{ $error }}</li>
@endforeach
</ul>
</div>
@endif
<button type="submit" class="btn btn-success">Submit</button>
</form>
</div>
@endsection这是我的控制器：
<?php
namespace App\Http\Controllers;
use App\author;
use App\book;
use App\category;
use App\File;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\App;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Input;
use Illuminate\Support\Facades\Storage;
class BookController extends Controller
{
public $book;
public $file;
/**
public function __construct()
{
$this->middleware('auth')->only('create');
}
*/
public function index()
{
$books = Book::with(['user'])->get();
return view('books.index', compact('books'));
}
public function show($id)
{
$book = Book::with('categories','authors')->find($id);
return view('books.show', compact('book'));
}
public function create()
{
$categories = Category::all();
$authors = Author::all();
$files= File::all();
return view('books.create', compact('categories','authors','files'));
}
public function store(Request $request)
{
$this->validate($request,
[
'name'=>'required|string|max:256',
'pages'=>'required|integer|numeric',
'ISBN'=>'required|string|numeric',
'price'=>'required|integer|numeric',
'published_at'=>'required|date|date',
'file'=>'required',
]
);
if ($request->hasFile('file')) {
$filename = $request->file('file')->getClientOriginalName();
$request->file->storeAs('public', $filename);
$file = new File;
$file->name = $filename;
$file->save();
}
$book = Auth::User()->books()->create($request->except('_token'));
$book->categories()->attach($request->get('category_id'));
$book->authors()->attach($request->get('author_id'));
$book->files()->attach($request->get('book_id'));
return redirect('/books');
}
}
its web.php:
<!-- begin snippet: js hide: false console: true babel: false -->它是 index.blade.php，我们可以在浏览器中看到字段：
@extends('layouts.app')
@section('content')
<div class="container">
<table class="table">
<tr>
<th>
Book Name
</th>
<th>
Creator
</th>
</tr>
@foreach($books as $book)
<tr>
<td><a href={{"/books/".$book->id}}>{{$book->name}}</a></td>
<td>{{$book->user->name}}</td>
@can('update',$book)
<td><a href="{{Route('books.edit',['id'=>$book->id])}}" class="btn btn-primary">edit</a></td>
<!-- Button trigger modal -->
<td> <button type="button" class="btn btn-danger" data-toggle="modal" data-target="#exampleModal">
delete
</button>
</td>
@else
<td>
</td>
@endcan
<td>
</td>
</tr>
@endforeach
</table>
<div class="mt-3"></div>
<a href="{{'/books/create'}}" class="btn btn-success btn-block">Create</a>
</div>
@endsection我的所有代码都运行正确，但我的问题是如何将图像文件显示到浏览器？我的意思是；如何在 index.blade.php 中使用 img 标签来显示浏览器中的图像？（我没有写我所有的代码，因为它太长了，我只想在 img 标签中写一个短代码，像这样：
'<img src="public/' . $file->getClientOriginalName() .'" />';但你知道它在刀片中不起作用。我该怎么办？
