laravel实现图片上传预览,及编辑时可更换图片,并(2)

**
 * 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) ? $file : null;
    if ($file != null && $file->isValid()) {
      // 获取文件相关信息
      $originalName = $file->getClientOriginalName(); // 文件原名
      $ext = $file->getClientOriginalExtension();   // 扩展名
      //dd($ext);
      $file->getClientOriginalName();
 
      if ($ext == "" && $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;
  }
}

<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">
          <?php $hasUrl = old_or_new_field('thumbnail', $data); ?>
          <div class="form-group {{!$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="{{asset('storage/serve').'/'.old_or_new_field('thumbnail',$data)}}" data-src="{{ asset('storage/serve'.old_or_new_img('thumbnail', $data, false))}}"
                @else
 
                src="{{asset('storage/serve').'/'. (isset($data->merchantInfo->thumbnail)?$data->merchantInfo->thumbnail:' ')}}" data-src="{{ asset('storage/serve').'/'. (isset($data->merchantInfo->thumbnail)?$data->merchantInfo->thumbnail:' ')}}"
                @endif
                id="file-preview" class="img-thumbnail" alt="图片预览" data-magnify="gallery">
 
          </div>
        </div>
        <div>
          <?php $hasUrl = old_or_new_field('interior_figure_one', $data); ?>
          <div class="form-group {{!$hasUrl or 'has-error'}} has-feedback">
            <label class="control-label" for="file">
              <span class="font-red">*</span>
              <span>内景图1:</span>
              <span class="font-gray">(宽高为375px:200px)：</span>
            </label>
            <div class="input-group">
              @if( $hasUrl )
                <input type="file" class="file-preview-second form-control" name="image1" id="image1" accept="image/*"
                    value="{{ old_or_new_field('interior_figure_one',$data) }}">
              @else
                <input type="file" class="file-preview-second form-control validate" name="image1" required id="image1"
                    accept="image/*"
                    value="{{ old_or_new_field('interior_figure_one',$data) }}">
              @endif
            </div>
          </div>
          <div class="file-preview-wrap">
            <img
                @if( old_or_new_field('interior_figure_one',$data) )
                src="{{asset('storage/serve').'/'.old_or_new_field('interior_figure_one',$data)}}" data-src="{{ asset('storage/serve'.old_or_new_img('interior_figure_one', $data, false))}}"
                @else
                src="{{asset('storage/serve').'/'.(isset($data->merchantInfo->interior_figure_one)?$data->merchantInfo->interior_figure_one:'')}}" data-src="{{ asset('storage/serve').'/'.(isset($data->merchantInfo->interior_figure_one)?$data->merchantInfo->interior_figure_one:'')}}"
 
                @endif
                width="375px" height="200px" id="file-preview-second" class="img-thumbnail" alt="图片预览" data-magnify="gallery">
          </div>
        </div>
        <div >
          <?php $hasUrl = old_or_new_field('interior_figure_two', $data); ?>
          <div class="form-group {{!$hasUrl or 'has-error'}} has-feedback">
            <label class="control-label" for="file">
              <span class="font-red">*</span>
              <span>内景图2:</span>
              <span class="font-gray">(宽高为375px:200px)：</span>
            </label>
            <div class="input-group">
              @if( $hasUrl )
                <input type="file" class="file-preview-third form-control" name="image2" id="image2" accept="image/*"
                    value="{{ old_or_new_field('interior_figure_two',$data) }}">
              @else
                <input type="file" class="file-preview-third form-control validate" name="image2" required id="image2"
                    accept="image/*"
                    value="{{ old_or_new_field('interior_figure_two',$data) }}">
              @endif
            </div>
          </div>
          <div class="file-preview-wrap">
            <img
                @if( old_or_new_field('interior_figure_two',$data) )
                {{--src="{{route('Img.uploads.file',[old_or_new_field('url',$data)])}}"--}}
                src="{{asset('storage/serve').'/'.old_or_new_field('interior_figure_two',$data)}}" data-src="{{ asset('storage/serve'.old_or_new_img('interior_figure_two', $data, false))}}"
                @else
                src="{{asset('storage/serve').'/'.(isset($data->merchantInfo->interior_figure_two)?$data->merchantInfo->interior_figure_two:'')}}" data-src="{{ asset('storage/serve').'/'.(isset($data->merchantInfo->interior_figure_two)?$data->merchantInfo->interior_figure_two:'')}}"
                @endif
                width="375px" height="200px" id="file-preview-third" class="img-thumbnail" alt="图片预览" data-magnify="gallery">
          </div>
        </div>
        <div>
          <?php $hasUrl = old_or_new_field('interior_figure_three', $data); ?>
          <div class="form-group {{!$hasUrl or 'has-error'}} has-feedback">
            <label class="control-label" for="file">
              <span class="font-red">*</span>
              <span>缩略图3:</span>
              <span class="font-gray">(宽高为375px:200px)：</span>
            </label>
            <div class="input-group">
              @if( $hasUrl )
                <input type="file" class="file-preview-forth form-control" name="image3" id="image3" accept="image/*"
                    value="{{ old_or_new_field('interior_figure_three',$data) }}">
              @else
                <input type="file" class="file-preview-forth form-control validate" name="image3" required id="image3"
                    accept="image/*"
                    value="{{ old_or_new_field('interior_figure_three',$data) }}" >
              @endif
            </div>
          </div>
          <div class="file-preview-wrap">
            <img
                @if( old_or_new_field('interior_figure_three',$data) )
                {{--src="{{route('Img.uploads.file',[old_or_new_field('url',$data)])}}"--}}
                src="{{asset('storage/serve').'/'.old_or_new_field('interior_figure_three',$data)}}" data-src="{{ asset('storage/serve'.old_or_new_img('interior_figure_three', $data, false))}}"
                @else
                src="{{asset('storage/serve').'/'.(isset($data->merchantInfo->interior_figure_three)?$data->merchantInfo->interior_figure_three:'')}}" data-src="{{ asset('storage/serve').'/'.(isset($data->merchantInfo->interior_figure_three)?$data->merchantInfo->interior_figure_three:'')}}"
                @endif
                width="375px" height="200px" id="file-preview-forth" class="img-thumbnail" alt="图片预览" data-magnify="gallery">
          </div>
        </div>
      </div>
 
      <div class="text-center margin-bottom-sm">
        <button class="pretty-btn"> 编辑商户</button>
      </div>
      {{ Form::close() }}
    </div>
  </div>
</div>