Question

在下面的代码中，我通过自定义在管理页面中添加了一个“另存为pdf”按钮。当我点击另存为pdf按钮时，它应以pdf格式显示当前页面的详细信息。我无法检索当前页面的单独数据，无法以pdf格式显示（my_template.html）。怎么做？提前谢谢。

views.py：

# -*- coding: utf-8 -*-
from __future__ import unicode_literals

# Create your views here.
from django.http import HttpResponse
from django.views.generic import View
from django.db import models
from details.utils import render_to_pdf #created in step 4
from .models import UserDetails

class GeneratePdf(View): 
    def get(self, request, *args, **kwargs):
      #THIS IS THE PLACE WHERE I GET STUCK
      all = {
          "Name": "obj.name",
          "Email": "obj.email",
          "Address": "obj.address",
          "DOB": "obj.dob",
          "Gender": "obj.gender",
      } 
      pdf = render_to_pdf('my_template.html', all)
      return HttpResponse(pdf, content_type='application/pdf')

urls.py：

"""myapp URL Configuration

The `urlpatterns` list routes URLs to views. For more information please see:
    https://docs.djangoproject.com/en/1.11/topics/http/urls/
Examples:
Function views
    1. Add an import:  from my_app import views
    2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
Class-based views
    1. Add an import:  from other_app.views import Home
    2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
Including another URLconf
    1. Import the include() function: from django.conf.urls import url, include
    2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
"""
from django.conf.urls import url
from django.contrib import admin

from details.views import GeneratePdf
urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^pdf/$', GeneratePdf.as_view(),name='generatepdf'),
]

Answer 1

Anton Shurashov's answer是正确的。除此之外，在模板中指定所需标记中的URL时，您应该知道要访问它的数据的ID。它仅在数据保存在数据库中时才有效。

{%url 'generatepdf' adminform.form.instance.id  %}

"""adminform.form.instance.id"""是指示当前页面数据ID的一般实例。

只有在保存数据后，该按钮才可见。

Answer 2

urls.py：

from details.views import GeneratePdf

urlpatterns = [
  url(r'^admin/', admin.site.urls),
  url(r'^pdf/(?P<user_id>[0-9]+)/$', GeneratePdf.as_view(), name='generatepdf'),
]

views.py：

from django.http import HttpResponse
from django.views.generic import View
from django.db import models
from details.utils import render_to_pdf
from .models import UserDetails

class GeneratePdf(View): 
    def get(self, request, *args, **kwargs):
        obj = UserDetails.objects.get(id=kwargs.get('user_id'))
        all = {
            "Name": obj.name,
            "Email": obj.email,
            "Address": obj.address,
            "DOB": obj.dob,
            "Gender": obj.gender,
        } 
        pdf = render_to_pdf('my_template.html', all)
        return HttpResponse(pdf, content_type='application/pdf')

Django管理页面添加另存为pdf按钮

2 个答案: