[other] python django 4无法使用include
Tofloor
poster avatar
流浪的小李子吖
deepin
2023-09-22 04:20
Author

这不,我在做灵墨的下载网页嘛,偏偏好事多磨,非得出错并无法执行migrate(相当于无法创建数据库)

但是我没法,只好找你们求救了

刚从百度AI找来了下载网页的代码,结果运行一看,完了,坏了,没办法,问一下有没有解决方法

百度AI给的:

下面是一个使用 Django 框架来编写一个网页,当用户点击链接时,就会向用户发送文件的示例代码。注意,以下代码不包括文件上传或文件存储的部分,只是文件下载的功能。

首先,我们需要创建一个 Django 项目。可以使用以下命令创建:

django-admin startproject myproject

然后,在 myproject 文件夹中创建一个新的 Django 应用,例如 file_download

bashpython manage.py startapp file_download

file_download 应用中,我们需要创建一个视图函数,该函数会处理文件下载请求。以下是一个简单的示例视图函数:

python# file_download/views.py
from django.http import HttpResponseRedirect, HttpResponse
from django.shortcuts import render
from django.template.response import TemplateResponse
from django.urls import path
import os

def download_file(request):
    file_path = "/path/to/your/file.txt"  # 这里替换成你的文件路径
    file_name = os.path.basename(file_path)  # 获取文件名
    with open(file_path, 'rb') as file:
        response = HttpResponse(file.read(), content_type='application/octet-stream')  # 以二进制流的形式返回文件内容
        response['Content-Disposition'] = f'attachment; filename={file_name}'  # 设置响应头为文件下载
    return response

接下来,我们需要在 Django 的 URL 配置文件中配置这个视图函数:

python# myproject/urls.py
from django.contrib import admin
from django.urls import include, path

urlpatterns = [
    path('admin/', admin.site.urls),
    path('file_download/', include('file_download.urls')),  # 引入我们自己创建的 `file_download` 应用的 URL 配置文件
]

然后,在 file_download 应用中创建一个 URL 配置文件:

python# file_download/urls.py
from django.urls import path
from . import views  # 引入本地的视图函数模块

urlpatterns = [
    path('download/', views.download_file, name='download'),  # 为视图函数 `download_file` 配置 URL 路径和名称
]

最后,创建一个 HTML 模板用于展示下载链接:

html



    File Download Page


    Download File  


现在,当你访问 Download File 链接时,就会触发 download_file 视图函数,下载指定的文件。请确保替换代码中的文件路径为你实际的文件路径。

运行后:

下面是一个使用 Django 框架来编写一个网页,当用户点击链接时,就会向用户发送文件的示例代码。注意,以下代码不包括文件上传或文件存储的部分,只是文件下载的功能。

首先,我们需要创建一个 Django 项目。可以使用以下命令创建:

django-admin startproject myproject

然后,在 myproject 文件夹中创建一个新的 Django 应用,例如 file_download

bashpython manage.py startapp file_download

file_download 应用中,我们需要创建一个视图函数,该函数会处理文件下载请求。以下是一个简单的示例视图函数:

python# file_download/views.py
from django.http import HttpResponseRedirect, HttpResponse
from django.shortcuts import render
from django.template.response import TemplateResponse
from django.urls import path
import os

def download_file(request):
    file_path = "/path/to/your/file.txt"  # 这里替换成你的文件路径
    file_name = os.path.basename(file_path)  # 获取文件名
    with open(file_path, 'rb') as file:
        response = HttpResponse(file.read(), content_type='application/octet-stream')  # 以二进制流的形式返回文件内容
        response['Content-Disposition'] = f'attachment; filename={file_name}'  # 设置响应头为文件下载
    return response

接下来,我们需要在 Django 的 URL 配置文件中配置这个视图函数:

python# myproject/urls.py
from django.contrib import admin
from django.urls import include, path

urlpatterns = [
    path('admin/', admin.site.urls),
    path('file_download/', include('file_download.urls')),  # 引入我们自己创建的 `file_download` 应用的 URL 配置文件
]

然后,在 file_download 应用中创建一个 URL 配置文件:

python# file_download/urls.py
from django.urls import path
from . import views  # 引入本地的视图函数模块

urlpatterns = [
    path('download/', views.download_file, name='download'),  # 为视图函数 `download_file` 配置 URL 路径和名称
]

最后,创建一个 HTML 模板用于展示下载链接:

html



    File Download Page


    Download File  


现在,当你访问 Download File 链接时,就会触发 download_file 视图函数,下载指定的文件。请确保替换代码中的文件路径为你实际的文件路径。

运行后:

(lmos) lldxlz@lldxlz-x201e:~/lingmo_os/lmosdold$ python manage.py migrate
Traceback (most recent call last):
File "/home/lldxlz/lingmo_os/lmosdold/manage.py", line 22, in
main()
File "/home/lldxlz/lingmo_os/lmosdold/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/core/management/init.py", line 442, in execute_from_command_line
utility.execute()
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/core/management/init.py", line 436, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/core/management/base.py", line 412, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/core/management/base.py", line 458, in execute
output = self.handle(*args, **options)
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/core/management/base.py", line 106, in wrapper
res = handle_func(*args, **kwargs)
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/core/management/commands/migrate.py", line 100, in handle
self.check(databases=[database])
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/core/management/base.py", line 485, in check
all_issues = checks.run_checks(
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/core/checks/registry.py", line 88, in run_checks
new_errors = check(app_configs=app_configs, databases=databases)
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/core/checks/urls.py", line 14, in check_url_config
return check_resolver(resolver)
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/core/checks/urls.py", line 24, in check_resolver
return check_method()
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/urls/resolvers.py", line 494, in check
for pattern in self.url_patterns:
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/utils/functional.py", line 57, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/urls/resolvers.py", line 715, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/utils/functional.py", line 57, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/lldxlz/lingmo_os/lmos/lib/python3.9/site-packages/django/urls/resolvers.py", line 708, in urlconf_module
return import_module(self.urlconf_name)
File "/usr/lib/python3.9/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1030, in _gcd_import
File "", line 1007, in _find_and_load
File "", line 986, in _find_and_load_unlocked
File "", line 680, in _load_unlocked
File "", line 790, in exec_module
File "", line 228, in _call_with_frames_removed
File "/home/lldxlz/lingmo_os/lmosdold/lmosdold/urls.py", line 23, in
path('file_download/',include('file_download.urls')),
NameError: name 'include' is not defined

这个nameerror我还看得清楚

是找不到include

但是离谱的就来了

这是urls的解释说明

"""

URL configuration for lmosdold project.

The `urlpatterns` list routes URLs to views. For more information please see:

https://docs.djangoproject.com/en/4.2/topics/http/urls/

Examples:

Function views

1. Add an import:  from my\_app import views

2. Add a URL to urlpatterns:  path('', views.home, name='home')

Class-based views

1. Add an import:  from other\_app.views import Home

2. Add a URL to urlpatterns:  path('', Home.as\_view(), name='home')

Including another URLconf

1. Import the include() function: from django.urls import include, path

2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))

"""

请问这个

  1. Add a URL to urlpatterns: path('blog/', include('blog.urls'))我可否理解为:
  2. 添加url方法:path('blog/', include('blog.urls'))
    真的服了
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All Replies
流浪的小李子吖
deepin
2023-09-22 04:22
#1

求回复啊!!!!!!!!(加急求回复)

Reply View the author
fslong
deepin beta test group
2023-09-22 05:19
#2
流浪的小李子吖

求回复啊!!!!!!!!(加急求回复)

建议看django官网教程,很详细了,有include的详细用法,这是没导入进来的报错。

Reply View the author
dgmenghuan
deepin
2023-09-22 16:30
#3

太深奥了

Reply View the author
流浪的小李子吖
deepin
2023-09-24 00:49
#4

非常感谢2楼,现在变成了404错误

无语了

稍后见5楼

给错误信息

Reply View the author
流浪的小李子吖
deepin
2023-09-24 21:41
#5

Page not found (404)

Request Method: GET
Request URL: http://127.0.0.1:8000/

Using the URLconf defined in lmosdold.urls, Django tried these URL patterns, in this order:

  1. admin/
  2. download/

The empty path didn’t match any of these.

服了django4.2.0

Reply View the author
流浪的小李子吖
deepin
2023-09-24 21:42
#6
流浪的小李子吖

Page not found (404)

Request Method: GET
Request URL: http://127.0.0.1:8000/

Using the URLconf defined in lmosdold.urls, Django tried these URL patterns, in this order:

  1. admin/
  2. download/

The empty path didn’t match any of these.

服了django4.2.0

@floatingdream帮忙啊!!!

Reply View the author