Part 26

book/views.py

@@ -31,7 +31,8 @@
 from django.views.decorators.csrf import csrf_exempt
 from .forms import BookCreateEditForm,PubCreateEditForm,MemberCreateEditForm,ProfileForm,BorrowRecordCreateForm
 
-from .utils import get_n_days_ago,create_clean_dir,change_col_format
+# from .utils import get_n_days_ago,create_clean_dir,change_col_format
+from util.useful import get_n_days_ago,create_clean_dir,change_col_format
 from .groups_permissions import check_user_group,user_groups,check_superuser,SuperUserRequiredMixin
 from .custom_filter import get_item
 from datetime import date,timedelta,datetime
@@ -813,13 +814,12 @@ def get(self, request, *args, **kwargs):
 
 
 # Data center
-@method_decorator(user_passes_test(lambda u: check_user_group(u,"download_data")), name='dispatch')
 class DataCenterView(LoginRequiredMixin,TemplateView):
     template_name = 'book/download_data.html'
     login_url = 'login'
-
 
     def get(self,request,*args, **kwargs):
+        check_user_group(request.user,"download_data")
         data = {m.objects.model._meta.db_table:
         {"source":pd.DataFrame(list(m.objects.all().values())) ,
           "path":f"{str(settings.BASE_DIR)}/datacenter/{m.__name__}_{TODAY}.csv",

core/settings.py

@@ -42,6 +42,7 @@
     'rest_framework',
     'ckeditor',
     'comment',
+    'mptt',
 ]
 
 CRISPY_ALLOWED_TEMPLATE_PACKS = "tailwind"

datacenter/Category_20210827.csv

@@ -0,0 +1,13 @@
+id,name,created_at
+2,Economics,2021-07-31 18:19:30.473140+00:00
+3,Finance,2021-07-31 18:19:43.229982+00:00
+4,Historical,2021-07-31 18:19:49.221871+00:00
+5,Fantasy,2021-07-31 18:19:56.916918+00:00
+6,Cooking,2021-07-31 18:20:02.315268+00:00
+7,Computers & Tech,2021-07-31 18:20:10.279309+00:00
+8,Fiction,2021-07-31 18:20:17.988670+00:00
+9,Watch,2021-07-31 18:20:31.205351+00:00
+10,Detective and Mystery,2021-07-31 18:20:36.975123+00:00
+11,Literary Fiction,2021-07-31 18:20:41.851775+00:00
+12,Comic,2021-07-31 18:20:54.997368+00:00
+20,Fashion,2021-08-09 17:29:13.408340+00:00

env/Lib/site-packages/django_mptt-0.13.2.dist-info/INSTALLER

@@ -0,0 +1 @@
+pip

env/Lib/site-packages/django_mptt-0.13.2.dist-info/LICENSE

@@ -0,0 +1,21 @@
+Django MPTT
+-----------
+
+Copyright (c) 2007, Jonathan Buchanan
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

env/Lib/site-packages/django_mptt-0.13.2.dist-info/METADATA

@@ -0,0 +1,141 @@
+Metadata-Version: 2.1
+Name: django-mptt
+Version: 0.13.2
+Summary: Utilities for implementing Modified Preorder Tree Traversal with your Django Models and working with trees of Model instances.
+Home-page: https://github.com/django-mptt/django-mptt/
+Author: Craig de Stigter
+Author-email: [email protected]
+License: MIT-License
+Platform: OS Independent
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Environment :: Web Environment
+Classifier: Framework :: Django
+Classifier: Framework :: Django :: 2.2
+Classifier: Framework :: Django :: 3.0
+Classifier: Framework :: Django :: 3.1
+Classifier: Framework :: Django :: 3.2
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: BSD License
+Classifier: Operating System :: OS Independent
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Programming Language :: Python :: 3.8
+Classifier: Programming Language :: Python :: 3.9
+Requires-Python: >=3.6
+Description-Content-Type: text/x-rst
+Requires-Dist: django-js-asset
+Provides-Extra: tests
+Requires-Dist: coverage ; extra == 'tests'
+Requires-Dist: mock-django ; extra == 'tests'
+
+==========================================
+**This project is currently unmaintained**
+==========================================
+
+Alternatives to django-mptt include:
+
+* `django-treebeard <https://pypi.org/project/django-treebeard/>`_ includes a MPTT
+  implementation (called nested set)
+* Maybe you do not need MPTT, especially when using newer databases. See
+  `django-tree-queries <https://github.com/matthiask/django-tree-queries>`_ for an
+  implementation using recursive Common Table Expressions (CTE). See the 
+  `announcement blog post <https://406.ch/writing/django-tree-queries/>`__.
+
+
+===========
+django-mptt
+===========
+
+Utilities for implementing Modified Preorder Tree Traversal with your
+Django Models and working with trees of Model instances.
+
+.. image:: https://secure.travis-ci.org/django-mptt/django-mptt.svg?branch=master
+    :alt: Build Status
+    :target: https://travis-ci.org/django-mptt/django-mptt
+
+Project home: https://github.com/django-mptt/django-mptt/
+
+Documentation: https://django-mptt.readthedocs.io/
+
+Discussion group: https://groups.google.com/forum/#!forum/django-mptt-dev
+
+What is Modified Preorder Tree Traversal?
+=========================================
+
+MPTT is a technique for storing hierarchical data in a database. The aim is to
+make retrieval operations very efficient.
+
+The trade-off for this efficiency is that performing inserts and moving
+items around the tree is more involved, as there's some extra work
+required to keep the tree structure in a good state at all times.
+
+Here are a few articles about MPTT to whet your appetite and provide
+details about how the technique itself works:
+
+* `Trees in SQL`_
+* `Storing Hierarchical Data in a Database`_
+* `Managing Hierarchical Data in MySQL`_
+
+.. _`Trees in SQL`: https://www.ibase.ru/files/articles/programming/dbmstrees/sqltrees.html
+.. _`Storing Hierarchical Data in a Database`: https://www.sitepoint.com/hierarchical-data-database/
+.. _`Managing Hierarchical Data in MySQL`: http://mikehillyer.com/articles/managing-hierarchical-data-in-mysql/
+
+What is ``django-mptt``?
+========================
+
+``django-mptt`` is a reusable Django app which aims to make it easy for you
+to use MPTT with your own Django models.
+
+It takes care of the details of managing a database table as a tree
+structure and provides tools for working with trees of model instances.
+
+Requirements
+------------
+
+* Python 3.6+
+* A supported version of Django (currently 2.2+)
+
+Feature overview
+----------------
+
+* Simple registration of models - fields required for tree structure will be
+  added automatically.
+
+* The tree structure is automatically updated when you create or delete
+  model instances, or change an instance's parent.
+
+* Each level of the tree is automatically sorted by a field (or fields) of your
+  choice.
+
+* New model methods are added to each registered model for:
+
+  * changing position in the tree
+  * retrieving ancestors, siblings, descendants
+  * counting descendants
+  * other tree-related operations
+
+* A ``TreeManager`` manager is added to all registered models. This provides
+  methods to:
+
+  * move nodes around a tree, or into a different tree
+  * insert a node anywhere in a tree
+  * rebuild the MPTT fields for the tree (useful when you do bulk updates
+    outside of django)
+
+* `Form fields`_ for tree models.
+
+* `Utility functions`_ for tree models.
+
+* `Template tags and filters`_ for rendering trees.
+
+* `Admin classes`_ for visualizing and modifying trees in Django's administration
+  interface.
+
+.. _`Form fields`: https://django-mptt.readthedocs.io/en/latest/forms.html
+.. _`Utility functions`: https://django-mptt.readthedocs.io/en/latest/utilities.html
+.. _`Template tags and filters`: https://django-mptt.readthedocs.io/en/latest/templates.html
+.. _`Admin classes`: https://django-mptt.readthedocs.io/en/latest/admin.html
+
+

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env/Lib/site-packages/django_mptt-0.13.2.dist-info/WHEEL

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+Wheel-Version: 1.0
+Generator: bdist_wheel (0.34.2)
+Root-Is-Purelib: true
+Tag: py3-none-any
+

env/Lib/site-packages/django_mptt-0.13.2.dist-info/top_level.txt

@@ -0,0 +1 @@
+mptt

env/Lib/site-packages/mptt/__init__.py

@@ -0,0 +1,22 @@
+import django
+
+
+__version__ = "0.13.2"
+VERSION = tuple(__version__.split("."))
+
+if django.VERSION < (3, 2):  # pragma: no cover
+    default_app_config = "mptt.apps.MpttConfig"
+
+
+def register(*args, **kwargs):
+    """
+    Registers a model class as an MPTTModel, adding MPTT fields and adding MPTTModel to __bases__.
+    This is equivalent to just subclassing MPTTModel, but works for an already-created model.
+    """
+    from mptt.models import MPTTModelBase
+
+    return MPTTModelBase.register(*args, **kwargs)
+
+
+class AlreadyRegistered(Exception):
+    "Deprecated - don't use this anymore. It's never thrown, you don't need to catch it"