laravel实现图片上传预览,及编辑时可更换图片,并实时变化的例子

网络编程 2024/11/18 佚名

3 2 1

首先先看下效果图

这是添加的时候可以上传照片

这是编辑的时候可以修改照片

代码部分:

先看控制器:

/***
   * 添加商户
   * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
   */
  public function add()
  {
 
    $data = null;
    return _view('admin.merchant.merchant.edit', compact('data'));
  }
 
  /***
   * 添加商户
   * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
   */
  public function store(StoreMenchantRequest $request)
  {
    //判断手机号是否重复 重复不能添加
    //后面开发可能会去掉这个判断
    $merchant = Merchant::where('mobile', $request->mobile)->first();
    if (!empty($merchant)) {
      return back()->withErrors('该用户已存在');
    }
    $token = str_random(60);
    $api_token = $this->getToken($token);
    $newMerchantData = [
      'mobile' => $request->mobile,
      'api_token' => $api_token,
    ];
    DB::beginTransaction();
    $newMerchant = Merchant::create($newMerchantData);
    $newData = [
      'merchant_id' => $newMerchant->id,//Merchantid
      'merchant_principal' => $request->merchant_principal,//负责人
      'merchant_name' => $request->merchant_name,//商家名称
      'merchant_short_name' => $request->merchant_short_name,//商家简称
      'merchant_address' => $request->merchant_address,//商家地址
      'business_num' => $request->business_num,//注册号
      'business_address' => $request->business_address,//营业地址
      'business_name' => $request->business_name,//营业执照名称
      'business_person' => $request->person,//营业执照法人
      'identity_name' => $request->person,//身份证姓名
      'identity_num' => $request->identity_num,//身份证号
    ];
    //上传缩略图
    $input = $request->all();
    if (isset($input['file']) && is_object($input['file'])) {
 
      $file_name = save_image_file($input['file'], 'merchant_infos');
      if (!$file_name) {
        return back()->with('msg', '图片上传失败,请重试!');
      }
//      dd($file_name);
      $input['thumbnail'] = $file_name;
      unset($input['_token']);
      unset($input['file']);
    } else {
      return back()->with('msg', '请上传图片');
    }
    //上传内景图1
    if (isset($input['image1']) && is_object($input['image1'])) {
 
      $file_name_1 = save_image_file($input['image1'], 'merchant_infos');
      if (!$file_name_1) {
        return back()->with('msg', '图片上传失败,请重试!');
      }
 
      $input['interior_figure_one'] = $file_name_1;
      unset($input['_token']);
      unset($input['image1']);
    } else {
      return back()->with('msg', '请上传图片');
    }
    //上传内景图2
    if (isset($input['image2']) && is_object($input['image2'])) {
 
      $file_name_2 = save_image_file($input['image2'], 'merchant_infos');
      if (!$file_name_2) {
        return back()->with('msg', '图片上传失败,请重试!');
      }
      $input['interior_figure_two'] = $file_name_2;
      unset($input['_token']);
      unset($input['image2']);
    } else {
      return back()->with('msg', '请上传图片');
    }
    //上传内景图3
    if (isset($input['image3']) && is_object($input['image3'])) {
 
      $file_name_3 = save_image_file($input['image3'], 'merchant_infos');
      if (!$file_name_3) {
        return back()->with('msg', '图片上传失败,请重试!');
      }
      $input['interior_figure_three'] = $file_name_3;
      unset($input['_token']);
      unset($input['image3']);
    } else {
      return back()->with('msg', '请上传图片');
    }
 
    $merchantInfo = MerchantInfo::where('merchant_id', $newMerchant->id)->first();
    if (!empty($merchantInfo)) {
      return back()->withErrors('该用户已录入信息');
    }
    $homestayInfo = HomestayInfo::where('merchant_id', $newMerchant->id)->first();
    if (!empty($homestayInfo)) {
      return back()->withErrors('该用户已录入信息');
    }
    //录入商户信息
    $newData['thumbnail'] = $input['thumbnail'];
    $newData['interior_figure_one'] = $input['interior_figure_one'];
    $newData['interior_figure_two'] = $input['interior_figure_two'];
    $newData['interior_figure_three'] = $input['interior_figure_three'];
    $newData['content'] = $input['content'];
    $newMerchantInfo = MerchantInfo::create($newData);
    $newHomestayInfo = HomestayInfo::create($newData);
    if ($newMerchantInfo && $newHomestayInfo && $newMerchant) {
      DB::commit();
      admin_action_logs($newMerchant, "添加商户成功");
      return redirect()->route('admin.merchant.index')->with('msg', '添加成功');
    } else {
      DB::rollback();
      return back()->withErrors('添加失败，请联系管理员');
    }
 
 
  }

这边封装了一个上传图片的方法,调用即可

**
 * 调用的文件中需要 use Illuminate\Support\Facades\Input; Illuminate\Support\Facades\Storage;
 * save_image_file 保存图片文件 ,存在Storage::disk('uploads') 目录下
 * @var $file object 上传的图片文件,具体是在 request 中的 UploadedFile 类型的对象
 * @var $prefix_name string 可选保存的文件名前缀
 * @var $path string 文件路径
 * @return bool/string 如果通过验证 则返回在新的文件名
 */
if (!function_exists('save_image_file')) {
 
  function save_image_file(&$file, $prefix_name = '', $path = 'serve')
  {
    $file = isset($file) "" && $file->getClientOriginalName() == 'blob') {
        $ext = 'png';
      }
      if (!preg_match('/jpg|png|gif$/is', $ext)) {
        return false;
      }
      //dd($file->getRealPath());
      $realPath = $file->getRealPath();  //临时文件的绝对路径
      $type = $file->getClientMimeType();   // image/jpeg
      // 上传文件
      $filename = $prefix_name . '-' . date('Y-m-d-H-i-s') . '-' . uniqid() . '.' . $ext;
      //dd($filename);
      $bool = Storage::disk($path)->put($filename, file_get_contents($realPath));
      if (!$bool) return false;
      return $filename;
    }
    return false;
  }
}

接下来是编辑时候显示已经上传的图片并且可以进行修改:

<div class="row">
  <div class="col-lg-6 col-sm-8 col-xs-12">
    <div class="panel panel-default">
      {{ Form::open(['method'=>'post','route' => ['admin.merchant.add_img_store'],'enctype'=>'multipart/form-data']) }}
      <div class="panel-heading">商户图片</div>
      <div class="panel-body">
        <input type="hidden" name="id" value="{{$data->id}}">
        <div class=" form-group">
          <"form-group {{!$hasUrl or 'has-error'}} has-feedback">
            <label class="control-label" for="file">
              <span class="font-red">*</span>
              <span>缩略图:</span>
              <span class="font-gray">(宽高为120px:120px)：</span>
            </label>
            <div class="input-group">
              @if( $hasUrl )
                <input type="file" class="file-preview form-control" name="file" id="file" accept="image/*"
                    value="{{ old_or_new_field('thumbnail',$data) }}">
              @else
                <input type="file" class="file-preview form-control validate" name="file" required id="file"
                    accept="image/*"
                    value="{{ old_or_new_field('thumbnail',$data) }}">
              @endif
            </div>
          </div>
          <div class="file-preview-wrap">
            <img
                @if( old_or_new_field('thumbnail',$data) )
                src="/UploadFiles/2021-04-02/'.old_or_new_field('thumbnail',$data)}}">

编辑这边 的控制器代码是:


/***
 * 添加图片
 * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
 */
public function add_img()
{
  $data = null;
  return _view('admin.merchant.merchant.add', compact('data'));
}
 
/***
 * 保存图片
 * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
 */
public function add_img_store(Request $request)
{
  //上传缩略图
  $input = $request->all();
 
  if (isset($input['file']) && is_object($input['file'])) {
 
    $file_name = save_image_file($input['file'], 'merchant_infos');
    if (!$file_name) {
      return back()->with('msg', '图片上传失败,请重试!');
    }
 
    $input['thumbnail'] = $file_name;
    unset($input['_token']);
    unset($input['file']);
  } else {
    return back()->with('msg', '请上传图片');
  }
  //上传内景图1
  if (isset($input['image1']) && is_object($input['image1'])) {
 
    $file_name_1 = save_image_file($input['image1'], 'merchant_infos');
    if (!$file_name_1) {
      return back()->with('msg', '图片上传失败,请重试!');
    }
 
    $input['interior_figure_one'] = $file_name_1;
    unset($input['_token']);
    unset($input['image1']);
  } else {
    return back()->with('msg', '请上传图片');
  }
  //上传内景图2
  if (isset($input['image2']) && is_object($input['image2'])) {
 
    $file_name_2 = save_image_file($input['image2'], 'merchant_infos');
    if (!$file_name_2) {
      return back()->with('msg', '图片上传失败,请重试!');
    }
    $input['interior_figure_two'] = $file_name_2;
    unset($input['_token']);
    unset($input['image2']);
  } else {
    return back()->with('msg', '请上传图片');
  }
  //上传内景图3
  if (isset($input['image3']) && is_object($input['image3'])) {
 
    $file_name_3 = save_image_file($input['image3'], 'merchant_infos');
    if (!$file_name_3) {
      return back()->with('msg', '图片上传失败,请重试!');
    }
    $input['interior_figure_three'] = $file_name_3;
    unset($input['_token']);
    unset($input['image3']);
  } else {
    return back()->with('msg', '请上传图片');
  }
  //录入商户信息
 
  $merchang_info = MerchantInfo::where('merchant_id', '=', $input['id'])->first();
  if (empty($merchang_info)) {
    $newData['thumbnail'] = $input['thumbnail'];
    $newData['merchant_id'] = $input['id'];
    $newData['interior_figure_one'] = $input['interior_figure_one'];
    $newData['interior_figure_two'] = $input['interior_figure_two'];
    $newData['interior_figure_three'] = $input['interior_figure_three'];
    $newData['content']='';
    $result = MerchantInfo::create($newData);
  } /* $newData['thumbnail']=$input['thumbnail'];
  $newData['interior_figure_one']=$input['interior_figure_one'];
  $newData['interior_figure_two']=$input['interior_figure_two'];
  $newData['interior_figure_three']=$input['interior_figure_three'];
  // $newData['content']=$input['content'];
  $newMerchantInfo = MerchantInfo::create($newData);*/
  else {
    $merchang_info->thumbnail = $input['thumbnail']"编辑商户成功");
    return redirect()->route('admin.merchant.index')->with('msg', '编辑成功');
  } else {
    DB::rollback();
    return back()->withErrors('编辑失败，请联系管理员');
  }
}



以上这篇laravel实现图片上传预览,及编辑时可更换图片,并实时变化的例子就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。

laravel,图片,上传,预览,更换