![[PukiWiki]](image/taikyoku.gif "[PukiWiki]")
[local] munakata:~/source/python/vlman$ pip3 install django [local] munakata:~/source/python/vlman$ python3 -m django --version 2.2.2
[local] munakata:~/source/python/vlman$ django-admin startproject vlmanui [local] munakata:~/source/python/vlman/vlmanui$ django-admin startapp file_viewer
[local] munakata:~/source/python/vlman/vlmanui$ python3 manage.py createsuperuser Username (leave blank to use 'munakata'): Email address: magu775@gmail.com Password: Password (again): Superuser created successfully.
LANGUAGE_CODE = 'ja' TIME_ZONE = 'Asia/Tokyo'
[local] munakata:~/source/python/vlman$ tree
.
├── video_top
│ ├── sample_A.mp4
├── vlman.py
├── vlmandb.sqbpro
├── vlmandb.sqlite3
├── file_viewer <--------- application definition
│ ├── __init__.py
│ ├── admin.py
│ ├── apps.py
│ ├── migrations
│ │ └── __init__.py
│ ├── models.py <----------- database access definition
│ ├── tests.py
│ └── views.py <--------- look & feel definition
└── vlmanui <------------ total system settings
├── manage.py
└── vlmanui
├── __init__.py
├── settings.py <---------- application directory
├── urls.py <------------ URL entry point definition
└── wsgi.py[local] munakata:~/source/python/vlman/vlmanui$ python3 manage.py runserver 8000
path('abc/', include('(プロジェクト名).urls', name = 'reverse serch name')
rpath(r'^abc*$', include('application name.urls'), name='reverse name')
[local] munakata:~/source/python/vlman/vlmanui$ python3 manage.py makemigrations
Migrations for 'fview':
fview/migrations/0001_initial.py
- Create model Filedir
[local] munakata:~/source/python/vlman/vlmanui$ python3 manage.py migrate
Operations to perform:
Apply all migrations: admin, auth, contenttypes, fview, sessions
Running migrations:
Applying contenttypes.0001_initial... OK
Applying auth.0001_initial... OK
Applying admin.0001_initial... OK
Applying admin.0002_logentry_remove_auto_add... OK
Applying admin.0003_logentry_add_action_flag_choices... OK
Applying contenttypes.0002_remove_content_type_name... OK
Applying auth.0002_alter_permission_name_max_length... OK
Applying auth.0003_alter_user_email_max_length... OK
Applying auth.0004_alter_user_username_opts... OK
Applying auth.0005_alter_user_last_login_null... OK
Applying auth.0006_require_contenttypes_0002... OK
Applying auth.0007_alter_validators_add_error_messages... OK
Applying auth.0008_alter_user_username_max_length... OK
Applying auth.0009_alter_user_last_name_max_length... OK
Applying auth.0010_alter_group_name_max_length... OK
Applying auth.0011_update_proxy_permissions... OK
Applying fview.0001_initial... OK
Applying sessions.0001_initial... OK
(vman) munakata@muna-E450:~/code/python/vman/vmanhmi$ python manage.py shell Python 3.6.8 (default, Jan 14 2019, 11:02:34) [GCC 8.0.1 20180414 (experimental) [trunk revision 259383]] on linux Type "help", "copyright", "credits" or "license" for more information. (InteractiveConsole) >>> from django.core.cache import cache >>> cache.clear()
sqlite> select * from django_migrations; <------- 該当アプリの変更履歴が記録されている sqlite> delete from django_migrations where app='fview (=アプリ名)'; sqlite>.exit (vman) munakata@muna-E450:~/code/python/vman/vmanhmi$ python manage.py makemigrations (vman) munakata@muna-E450:~/code/python/vman/vmanhmi$ python manage.py migrate
(vman) munakata@muna-E450:~/code/python/vman/vmanhmi$ python manage.py makemigrations fview
(vman) munakata@muna-E450:~/code/python/vman/vmanhmi$ python manage.py migrate --fake fview zero (vman) munakata@muna-E450:~/code/python/vman/vmanhmi$ python manage.py migrate fview
"python.linting.pylintArgs": [
"--load-plugins=pylint_django"
],munakata@muna-E450:~/code/python/vman/vmanhmi$ python manage.py shell Python 3.6.8 (default, Jan 14 2019, 11:02:34) [GCC 8.0.1 20180414 (experimental) [trunk revision 259383]] on linux Type "help", "copyright", "credits" or "license" for more information. (InteractiveConsole) >>> from django.core.cache import cache >>> cache.clear()
munakata@muna-E450:~/code/python/vman/vmanhmi$ tree (project root) ├── fview (application root) │ (snip) │ ├── static <------ 各アプリの下に専用の css/js を配置する │ │ └── fview │ │ ├── css │ │ │ ├── bootstrap.min.css │ │ │ └── bootstrap.min.css.map │ │ └── js │ │ ├── bootstrap.bundle.min.js │ │ ├── bootstrap.bundle.min.js.map │ │ ├── jquery-3.4.1.min.js │ │ └── jquery-3.4.1.min.map
pip3 install django-bootstrap4
munakata@muna-E450:~/code/python/vman/vmanhmi$ pip install django-bootstrap4 Collecting django-bootstrap4 Downloading https://files.pythonhosted.org/packages/02/5a/485d61f6dafa4e4d001a7880b04f40f04fe485a54b2756b0536ed2052342/django-bootstrap4- 0.0.8.tar.gz Building wheels for collected packages: django-bootstrap4 Running setup.py bdist_wheel for django-bootstrap4 ... done Stored in directory: /home/munakata/.cache/pip/wheels/f6/58/7f/fcdbcc8c631cc8f775cb8b9349ded99aff7a3f5b28e0f40ef3 Successfully built django-bootstrap4 Installing collected packages: django-bootstrap4 Successfully installed django-bootstrap4-0.0.8
<script src="https://kit.fontawesome.com/f70a45d16f.js"></script>
munakata@muna-E450:~/code/python/vman/vmanhmi$ pip install pipenv munakata@muna-E450:~/code/python/vman/vmanhmi$ pipenv install django-fontawesome-5
<a href="{% url 'fview:list_view' %}" class="btn btn-primary btn-sm my-3">ファイル一覧に戻る</a><a href={% url 'app:table' table.id %}>{{ table.name }}</a> <a scope="row" href="{% url 'fview:detail_view' fid=vfile.file_ID %}" class="btn btn-outline-primary btn-sm">{{ vfile.file_ID }}</a><form action="" method="POST">
{% csrf_token %}
<button type="submit" class="btn btn-outline-success btn-sm">お気に入りに登録</button>
</form>munakata@muna-E450:~/code/python/vmanhmi/fview/templates/fview$ pip install pillow Collecting pillow Using cached https://files.pythonhosted.org/packages/d2/c2/f84b1e57416755e967236468dcfb0fad7fd911f707185efc4ba8834a1a94/Pillow-6.0.0-cp36-cp36m-manylinux1_x86_64.whl Installing collected packages: pillow Successfully installed pillow-6.0.0
# media file for "pillow" MEDIA_ROOT = os.path.join(BASE_DIR, 'media') MEDIA_URL = '/media/'
# To support media directory path finding from . import settings from django.contrib.staticfiles.urls import static from django.contrib.staticfiles.urls import staticfiles_urlpatterns urlpatterns += staticfiles_urlpatterns() urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
class Document(models.Model):
description = models.CharField(max_length=255, blank=True)
photo = models.ImageField(upload_to='documents/', default='defo')
uploaded_at = models.DateTimeField(auto_now_add=True)
ImageField 型を宣言することが重要な意味を持つ
<div class="container">
<div class="row">
<div class="col-lg-8">
<div class="row">
<div class="col-xs-6"></div>
<div class="col-xs-6"></div>
<div class="col-xs-6"></div>
<div class="col-xs-6"></div>
</div>
</div>
<div class="col-lg-4"></div>
</div>
</div>
(vman) munakata@muna-E450:~/code/python/vman$ pip3 install channels channels_redis asgi_redis
munakata@mvc:~$ sudo apt install redis munakata@mvc:~$ redis-server -v Redis server v=4.0.9 sha=00000000:0 malloc=jemalloc-3.6.0 bits=64 build=9435c3c2879311f3 munakata@mvc:~$ ss -nlt State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 128 0.0.0.0:111 0.0.0.0:* (snip) LISTEN 0 128 127.0.0.1:6379 0.0.0.0:* <------ Radis はデフォルトで 127.0.0.1 だけを受け付ける設定
from channels.routing import ProtocolTypeRouter
application = ProtocolTypeRouter({
# (http->django views is added by default)
})INSTALLED_APPS = [
'channels',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'fview',
'bootstrap4',
'fontawesome_5',
]Delay server
If you used the delay server before to put things on hold for a few seconds, you can now instead use an AsyncConsumer and asyncio.sleep:
class PingConsumer(AsyncConsumer):
async def websocket_receive(self, message):
await asyncio.sleep(1)
await self.send({
"type": "websocket.send",
"text": "pong",
})# websocket (channels) のために ASGIの起点を指定 ASGI_APPLICATION = 'vmanhmi.routing.application'
System check identified no issues (0 silenced). July 20, 2019 - 15:43:38 Django version 2.2.2, using settings 'vmanhmi.settings' Starting ASGI/Channels version 2.2.0 development server at http://127.0.0.1:8000/ Quit the server with CONTROL-C.
Listen failure: Couldn't listen on 127.0.0.1:8000: [Errno 98] Address already in use.
munakata@muna-E450:~/code/python/vman/vmanhmi$ lsof -i:8000 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME chrome 3143 munakata 57u IPv4 57585 0t0 TCP localhost:56236->localhost:8000 (ESTABLISHED) python3 4055 munakata 26u IPv4 57446 0t0 TCP localhost:8000 (LISTEN) python3 4055 munakata 29u IPv4 57621 0t0 TCP localhost:8000->localhost:56242 (CLOSE_WAIT) python3 4055 munakata 30u IPv4 55067 0t0 TCP localhost:8000->localhost:56236 (ESTABLISHED) python3 4055 munakata 31u IPv4 58463 0t0 TCP localhost:8000->localhost:56246 (CLOSE_WAIT) python3 4055 munakata 32u IPv4 57175 0t0 TCP localhost:8000->localhost:56244 (CLOSE_WAIT) munakata@muna-E450:~/code/python/vman/vmanhmi$ sudo kill 3143 4055 munakata@muna-E450:~/code/python/vman/vmanhmi$ lsof -i:8000 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME python3 4055 munakata 26u IPv4 57446 0t0 TCP localhost:8000 (LISTEN) python3 4055 munakata 29u IPv4 57621 0t0 TCP localhost:8000->localhost:56242 (CLOSE_WAIT) python3 4055 munakata 30u IPv4 55067 0t0 TCP localhost:8000->localhost:56236 (CLOSE_WAIT) python3 4055 munakata 31u IPv4 58463 0t0 TCP localhost:8000->localhost:56246 (CLOSE_WAIT) python3 4055 munakata 32u IPv4 57175 0t0 TCP localhost:8000->localhost:56244 (CLOSE_WAIT)
munakata@muna-E450:~/code/python/vman/vmanhmi$ kill -s QUIT 4055 munakata@muna-E450:~/code/python/vman/vmanhmi$ lsof -i:8000
通常はcheck_allやcheck_output（およびrun）などを使えばよいのですが、子プロセスの終了をまたずに何か処理をしたいとかそういうことをしたい場合にはPopenを使います。
The Fool - real-time progress updates with django channels.pdf# -- test.py --
from time import sleep
print('child start!')
sleep(1)
print('child end!')
# -- main.py --
import subprocess
print('parent start!')
ps = subprocess.Popen(['python','test.py'])
print('parent end!')
$ py main.py parent start! parent end! child start! child end!
import os
if os.fork()==0:
long_process()
else:
return HttpResponse()import subprocess
p = subprocess.Popen([sys.executable, '/path/to/script.py'],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT)
(where the script is likely to be a manage.py command)import threading
t = threading.Thread(target=long_process,
args=args,
kwargs=kwargs)
t.setDaemon(True)
t.start()
return HttpResponse()
from multiprocessing import Process p = Process(target=_bulk_action,args=(action,objs)) p.start() return HttpResponse()
