php - 拉维尔 5.1 : How to upload multiple files from three different file input fields?

Question

我有一个表单，用户应至少选择一个要上传的文件。我有三个文件输入字段，如下所示:

            <div class="form-group col-lg-4">
                {!! Form::label('file1', 'Select file 1', ['class' => 'control-label']) !!}
                {!! Form::file('files[]', ['id'=>'file1']) !!}
            </div>
            <div class="form-group col-lg-4">
                {!! Form::label('file2', 'Select file 2', ['class' => 'control-label']) !!}
                {!! Form::file('files[]', ['id'=>'file2']) !!}
            </div>
            <div class="form-group col-lg-4">
                {!! Form::label('file3', 'Select file 3', ['class' => 'control-label']) !!}
                {!! Form::file('files[]', ['id'=>'file3']) !!}
            </div>

我应该验证表单请求中是否存在至少一个文件和 MIME 类型。然后在相关表单 Controller 的store方法中，将原始文件名存储在对应的三个数据库字段(即file1、file2、file3)中。

我该如何实现这个？

Answer 1

经过一番查找，终于找到了解决办法。首先，我将 View 修改为如下所示:

<div class="form-group col-lg-4">
            {!! Form::label('file1', 'Select file 1', ['class' => 'control-label']) !!}
            {!! Form::file('file1', ['id'=>'file1']) !!}
        </div>
        <div class="form-group col-lg-4">
            {!! Form::label('file2', 'Select file 2', ['class' => 'control-label']) !!}
            {!! Form::file('file2', ['id'=>'file2']) !!}
        </div>
        <div class="form-group col-lg-4">
            {!! Form::label('file3', 'Select file 3', ['class' => 'control-label']) !!}
            {!! Form::file('file3', ['id'=>'file3']) !!}
        </div>

然后在 Controller 中我使用了您建议的代码:

$files =[];
        if ($request->file('file1')) $files[] = $request->file('file1');
        if ($request->file('file2')) $files[] = $request->file('file2');
        if ($request->file('file3')) $files[] = $request->file('file3');
        foreach ($files as $file)
        {
            if(!empty($file)){
                $filename=$file->getClientOriginalName();
                $file->move(
                    base_path().'/public/uploads/', $filename
                );
            }

        }