如何在 jquery 发布请求后从 Django 中的 HttpResponse 显示 pdf？

编程问答 2022-05-26

问题描述

我正在使用 xhtml2pdf 在我的平台上介绍 pdf 报告下载。目的是通过ajax将包含一些数据的字典发送到视图，以便它触发utils.py中的render_to_pdf函数。问题是，虽然一切似乎都在工作，但由于请求有效且数据已发送，因此未生成 pdf。对此有什么想法吗？提前致谢！

views.py

int* pIn;
int* pOut;
for(int i = 0; i < Number; ++i) {     
     for(int Input_number = 0; Input_number < 100 / 2; ++Input_number) {
        pIn = pInputArr[i];
        pOut = pOutputArr[i];
        Some_fun(pIn,pOut);
        Some_fun(pOut,pIn);
    }
}

utils.py

 def ViewPDF(request,*args,**kwargs):
   
       if request.is_ajax():
          print('ajax')
       else:
          print('NOT ajax')
 

       s_id = kwargs['pk']

       customer = request.user
       search = searches_history.objects.get(id=s_id)
       product_id = search.product

       b = Products.objects.get(id=5)

       if product_id== b:
          print(b)
        

          search1 = ofac_lists.objects.filter(name__contains=search)
        
          context = {'id': customer,'search_id' : s_id,'nombre_buscado': search,'results' : search1,'date': search.date_created }
        
          pdf = render_to_pdf('core/reports/free_search.html',context)     
          return HttpResponse(pdf,content_type='application/force-download')
      else:
          
          context = {'id': customer,'date': search.date_created }
          pdf = render_to_pdf('core/reports/free_search.html',context)
          return HttpResponse(pdf,content_type='application/pdf')

main.js

def render_to_pdf(template_src,context_dict={}):
    template = get_template(template_src)


    html  = template.render(context_dict)
    result = BytesIO()
    pdf = pisa.pisaDocument(BytesIO(html.encode("UTF-8")),result)
    if not pdf.err:
    # Force pdf download
        response = HttpResponse(result.getvalue(),content_type='application/pdf')  
        response['Content-disposition'] = 'inline; filename=" .pdf"'    

        return response
    # view pdf in browser
    #        return http.HttpResponse(result.getvalue(),mimetype='application/pdf',content_type='application/force-download')

    return HttpResponse('We had some errors %s ' % cgi.escape(html))

响应POST REQUEST looks like the request is working fine

In response you can see that some type of doc is generated,but nor displayed in the browser or downloaded

解决方法

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ajaxdjangojavascriptpythonxhtml2pdf