Question

项目名称：JalaBapa_website

JalaBapa_website \网址：

from django.conf.urls import include, url
from django.contrib import admin

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^about_us/', include('About_Us.urls')),
    url(r'^activities/', include('Activities.urls')),
    url(r'^collections/', include('Collections.urls')),
    url(r'^contact_us/', include('Contact_Us.urls')),
    url(r'^donate/', include('Donate.urls')),
    url(r'^events/', include('Events.urls')),
    url(r'^home/', include('Home.urls')),
    url(r'^publications/', include('Publications.urls')),
]

出版物/ urls.py：

from django.conf.urls import url
from . import views

app_name = "Publications"

urlpatterns = [
    # /publications/
    url(r'^$', views.publications, name='publications'),
    # /publications/Xyz_9999.pdf/
    url(r'(?P<file_name>^[A-Z][a-z]+\_[0-9]{4}\.pdf$)', views.pdfs, name='pdfs')
]

出版物/ views.py

from django.http import HttpResponse, FileResponse
from django.shortcuts import get_object_or_404, render
from .models import *
# Create your views here.


def publications(request):

    all_files = Publications.objects.all()
    uploaded_file_names = []
    for obj in all_files:
        uploaded_file_names.append(str(obj.file_name()))
        context = {
        'uploaded_file_names': uploaded_file_names
        }
    return render(request, 'publications/publications.html', context)


def pdfs(request, file_name):
    with open('media/pdfs/'+file_name, 'r') as pdf:
        response = FileResponse(pdf, content_type='application/pdf')
        return response

一些代码：出版物/模板/出版物/ publications.html

<div class="container-fluid">
    {% for file_name in uploaded_file_names %}
    <a href="{{ file_name }}">
    <!-- <a href="{% url 'Publications:pdfs' file_name %}">

将继续......

上面的代码片段已经注释，因为在此之前显示错误：

/ publications /

的NoReverseMatch

反向＆lt; pdfs＆＃39;有参数＆＃39;（＆＃39; July_2017＆＃39;，）＆＃39;未找到。尝试了1种模式：[＆＃39;出版物/（？P ^ [A-Z] [a-z] + \ _ [0-9] {4} \。pdf $）＆＃39;]

Here is Error Screen Shot image

我想知道为什么这不起作用 - 问题1

ANYHOW，<a href="{{ file_name }}">是硬编码但正在运行所以我暂时继续前进

继续上述文件中途...

        <div style="float: left;" class="boxes black-container text-grow">
            {{ file_name }}
        </div>
    </a>
    {% endfor %}
</div>

问题 - 2：在文件publications.html上方，当我点击{{ file_name }}时，它会显示错误404页面未找到，here is screen shot of that page

链接：127.0.0.1:8000/publications/July_2017

网址匹配为：url(r'^publications/', include('Publications.urls'))和url(r'(?P<file_name>^[A-Z][a-z]+\_[0-9]{4}\.pdf$)', views.pdfs, name='pdfs')

当我访问https://www.regextester.com/88429网站时，它显示我的file_name：July_2017.pdf与正则表达式匹配：^\[A-Z\]\[a-z\]+\_\[0-9\]{4}\.pdf$

Answer 1

这可能不是答案 - 我对django不是很有信心，但我没有足够的声誉来发表评论。

问题1.你的插入符号（'^'）看起来与我的不同 - 我真的只把它看作是引号内的第一个字符（例如r'^ publications /（？P等等）我看不出这会导致问题，但可能需要尝试。

问题2，视图'pdfs'正在尝试提供FileResponse对象，但是你的文件名变量（'July_2017'）被剥去了'.pdf'扩展名，可以让它成功点击文件吗？

Django url正则表达式匹配但页面未找到错误

1 个答案: