关于在fastadmin后台AJAX上传图片或者视频增加额外参数的办法

后台的AJAX上传 封装的上传函数  想不同的功能上传到不同的文件夹

所以需要在添加或者编辑页面增加额外的参数 告诉upload函数

直接来吧

1 add.html

<form id="add-form" class="form-horizontal" role="form"   data-toggle="validator" method="POST" action="">

    <div class="form-group">
        <label class="control-label col-xs-12 col-sm-2">{:__('Coursename')}:</label>
        <div class="col-xs-12 col-sm-8">
            <input id="c-act_name" class="form-control" name="row[course_name]" type="text" value="">
        </div>
    </div>
    
    <div class="form-group">
        <label class="control-label col-xs-12 col-sm-2">{:__('Chapter')}:</label>
        <div class="col-xs-12 col-sm-8">
            {:build_select('row[chapter_id]', $chapterdata, null, ['class'=>'form-control', 'required'=>''])}
        </div>
    </div>
 
 
    
 

    <div class="form-group">
    <label for="c-video_url" class="control-label col-xs-12 col-sm-2">{:__('Coursevideo')}:</label>
    <div class="col-xs-12 col-sm-8">
        <div class="input-group">
            <input id="c-video_url" data-url='ajax/uploadvideo'     data-rule="" class="form-control" size="50" name="row[course_video]" type="text" >
            <div class="input-group-addon no-border no-padding">
                <span><button type="button" id="plupload-video_url" class="btn btn-danger plupload" data-multipart={"folder":"online_course_video"} data-input-id="c-video_url" data-mimetype="mp4,avi,ogg" data-multiple="false" data-preview-id="p-video_url"><i class="fa fa-upload"></i>{:__('Upload')}</button></span>
            </div>
            <span class="msg-box n-right" for="c-video_url"></span>
        </div>
        <ul class="row list-inline plupload-preview" id="p-video_url"></ul>
    </div>
</div>
    
     
    <div class="form-group layer-footer">
        <label class="control-label col-xs-12 col-sm-2"></label>
        <div class="col-xs-12 col-sm-8">
            <button type="submit" class="btn btn-success btn-embossed disabled">{:__('OK')}</button>
            <button type="reset" class="btn btn-default btn-embossed">{:__('Reset')}</button>
        </div>
    </div>
</form>

红色部分是关键

那么后端的代码是怎么获取的呢  其实很简单 和普通的变量获取一样

        //获取上传到哪个文件夹
        $folder=$this->request->post('folder');