python – Django的基本URL,在Nginx代理后面

2024年1月24日 157次阅读

我有一个简单的Django应用程序,它在Nginx后面托管.我正在使用weasyprint来生成PDF报告. weasyprint需要base_url属性来访问静态文件.

虽然下面的django代码在本地机器上工作正常(在dev服务器下),但在Nginx后面发布时会出现502 Bad Gateway错误.

View.py

html = render_to_string('admin/enquiry/quoterequest/generate.html', {'enquiry': enquiry})

response = HttpResponse(content_type='application/pdf')

response['Content-Disposition'] = 'filename=\"Enquiry_{}.pdf'.format(enquiry.reference)
weasyprint.HTML(string=html,base_url=request.build_absolute_uri()).write_pdf(response, stylesheets=[
    weasyprint.CSS(settings.STATICFILES_DIRS[0] + '/css/print.css')])

如果我删除base_url属性,上面的代码工作正常(没有打印图像).非常感谢您的输入 – 如何设置nginx或从Django中恢复base_url

Nginx配置

# configuration of the server
server {
    listen      80;
    server_name 192.168.33.10;  # Vagrant IP
    root        /home/www/my_project;
    charset     utf-8;

    client_max_body_size 75M;   # max upload size

    location /media  {
        alias /home/www/my_project/assets/uploads;
    }

    location /static {
        alias /home/www/my_project/assets/static;
    }

    location / {
        proxy_pass http://localhost:8001;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }

}

print.css

@page {
  size: letter;
  margin: 1.5in .25in 1.9in .5in;

  @top-center {
    content: url("/uploads/header_footer/header.jpg");
    height: 100%;
    width: 100%;
  }

  @bottom-center {
    background-image: url("/uploads/header_footer/footer.jpg");
    background-repeat: no-repeat;
    background-position: center;
    content: "Page " counter(page);
    height: 100%;
    width: 100%;
    vertical-align: bottom;;
  }
}

这是来自nginx日志的错误消息.

upstream prematurely closed connection while reading response header from upstream, client: 192.168.33.1, server: 192.168.33.10, request: "GET /enquiry/admin/enquiry/quoterequest/view/1/ HTTP/1.1", upstream: "http://127.0.0.1:8001/enquiry/admin/enquiry/quoterequest/view/1/", host: "192.168.33.10", referrer: "http://192.168.33.10/admin/enquiry/quoterequest/"

最佳答案 回答我自己 – 但这是一种解决方法’.对于所以ip 192.168.33.10,并且它的基地址http://192.168.33.10/media/’base_urlparameter forweasyprint`仍然有问题 – 即使手动输入基地址也没有办法解决问题.

这仍然无效,并返回502 Bad Gateway

weasyprint.HTML(string=html, base_url='http://192.168.33.10/media/').write_pdf(response)

所以我决定改变模板.所以无论我在哪里定义URL,我都将它们改为……

<img src="http://{{ request.META.HTTP_HOST }}{{ MEDIA_URL }}{{ myapp.mymodel.my_image }}">

并在我的View.py中添加了context_instance来获取MEDIA_URL.希望有人会为weasyprint的base_url问题找到答案.

html = render_to_string('admin/enquiry/quoterequest/generate.html', {'enquiry': enquiry}, context_instance=RequestContext(request))

response = HttpResponse(content_type='application/pdf')

response['Content-Disposition'] = 'filename=\"Enquiry_{}.pdf'.format(enquiry.reference)

weasyprint.HTML(string=html,base_url=request.build_absolute_uri()).write_pdf(response, stylesheets=[
    weasyprint.CSS(settings.STATICFILES_DIRS[0] + '/css/print.css')])
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