Media' object has no attribute 'add_js'

在Django2.1开发的时候和xadmin会遇到很多错误，前面的一般错误 大家看我上个博客分享的连接，基本上能解决今天这个错误是

‘Media’ object has no attribute ‘add_js’，只需要将xadmin的util.py文件下的vendor这个方法改下就行了

def vendor(*tags):
    media = Media()
    for tag in tags:
        file_type = tag.split('.')[-1]
        files = xstatic(tag)
        if file_type == 'js':
            media.add_js(files)
        elif file_type == 'css':
            media.add_css({'screen': files})
    return media

改成

def vendor(*tags):
  	css = {'screen': []}
    js = []
    for tag in tags:
        file_type = tag.split('.')[-1]
        files = xstatic(tag)
        if file_type == 'js':
            js.extend(files)
        elif file_type == 'css':
            css['screen'] += files
    return Media(css=css, js=js)