laravel实现上传图片,并且制作缩略图,按照日期存放的代码

<form id="form1" name="form1" class="form-horizontal form-label-left" enctype="multipart/form-data" method="post" action="{{asset('/content/add')}}" οnsubmit="submitContent()">
{{method_field('PUT')}}
laravel里面使用method_field()函数来伪造一些http请求；

<div class="form-group">
 <label class="control-label col-md-3 col-sm-3 col-xs-12" for="main_img">展示主图 <span class="required">*</span></label>
 <div class="col-md-6 col-sm-6 col-xs-12">
 <div id="inputBox">
  <input type="file" title="请选择图片" id="mainImg" name="main_img" required multiple accept="image/png,image/jpg,image/gif,image/JPEG"/>
  <div id="mainImgBox"></div>
 </div>
 </div>
</div>
 {!! csrf_field() !!}

<?php
namespace App\Http\Controllers\Admin;
 
use App\Http\Controllers\Controller;
use Image;
use Validator;
 
class ContentController extends Controller{
 public function addProcess(){
 $inputData = request()->all();
 $rules = [
  'main_img' => [ 'file','image','max:10240' ]
 ];
 $validator = Validator::make($inputData,$rules);
 if($validator->fails()){
  return back()->withErrors($validator)->withInput();
 }
 
  $photo = $inputData['main_img'];
  $file_name = uniqid().'.'.$photo->getClientOriginalExtension();
  $file_relative_path = 'assess/images/content/'.date('Y-m-d');
  $file_path = public_path($file_relative_path);
  if (!is_dir($file_path)){
  mkdir($file_path);
  }
  $thumbnail_file_path = $file_path . '/thumbnail-'.$file_name;
  $image = Image::make($photo)->resize(200, null, function ($constraint) {$constraint->aspectRatio();})->save($thumbnail_file_path);
  $file_path .= '/'.$file_name;
  $image = Image::make($photo)->save($file_path);
 
 echo ‘上传成功!';
 }
}