Django's version is now "3.0".

Notes:
 - django.utils.encoding.force_text() => force_str()
 - django.utils.html.escape() converts now ' to ' instead of '.
 - django.utils.http.urlquote() => urllib.parse.quote()
 - django.utils.http.is_safe_url() => url_has_allowed_host_and_scheme()
 - Use the old ContentType__str__() method.
 - The decorator @xframe_options_sameorigin has been used on views which are designed to be displayed in <iframe> (HTML bodies of emails).

CHANGELOG.txt

@@ -1,7 +1,22 @@
 == Version 2.3 Work in progress (not released -- this is a draft) ==
 
+  UPGRADE NOTE :
+    - You should create a all new virtual environment based on Python 3.6+
+      (eg: "mkvirtualenv -p /usr/bin/python3XX" if you use 'mkvirtualenv')
+      and populate it with "pip install -e .[mysql|pgsql]" of course.
+    - Execute the well known commands "migrate", "generatemedia" & "creme_populate".
+
+  Users side :
+  ------------
+    # The version of Django has been upgraded to 3.0.
+
+
   Developers side :
   -----------------
+    - The version of Django is now "3.0".
+      You should probably read the following releases notes for Django versions :
+        - https://docs.djangoproject.com/en/3.2/releases/3.0/
+
 
     Non breaking changes :
     ----------------------

README.md

@@ -69,7 +69,7 @@ virtual env, in order to keep the old one working).
  - These python packages :
    (exact versions of Python packages are indicated in the 'setup.cfg' file)
    - Mandatory :
-     - Django 2.2
+     - Django 3.0
      - redis 3.4
      - python-dateutil 2.8
      - bleach 3.1
@@ -92,7 +92,7 @@ Installation with 'pip':
  - You should probably use "virtualenv" (on a Python >= 3.6).
  - Creme should be installed using 'pip install -e .'
  - About DB server :
-   - If you use MySQL, you must add the 'mysql' flag:
+   - If you use MySQL/MariaDB, you must add the 'mysql' flag:
      'pip install .[mysql]'
    - For PostGreSQL, use 'pip install .[pgsql]' instead.
    - SQLite doesn't require a specific flag (see RECOMMENDATIONS).

creme/activities/tests/test_activity.py

@@ -9,7 +9,7 @@
 from django.forms import ModelMultipleChoiceField
 from django.forms.utils import ValidationError
 from django.urls import reverse
-from django.utils.encoding import force_text
+from django.utils.encoding import force_str  # force_text
 from django.utils.timezone import now
 from django.utils.translation import gettext as _
 
@@ -2325,7 +2325,8 @@ def test_dl_ical(self):
         self.assertEqual('text/calendar', response['Content-Type'])
         self.assertEqual('attachment; filename=Calendar.ics', response['Content-Disposition'])
 
-        content = force_text(response.content)
+        # content = force_text(response.content)
+        content = force_str(response.content)
         self.assertStartsWith(
             content,
             'BEGIN:VCALENDAR\nVERSION:2.0\nPRODID:-//CremeCRM//CremeCRM//EN\n'

creme/billing/tests/test_convert.py

@@ -7,7 +7,7 @@
 from django.contrib.contenttypes.models import ContentType
 from django.db.models.query_utils import Q
 from django.urls import reverse
-from django.utils.encoding import force_text
+from django.utils.encoding import force_str  # force_text
 from django.utils.timezone import now
 from django.utils.translation import gettext as _
 
@@ -214,8 +214,9 @@ def test_convert02_ajax(self):
         self.assertEqual(1, SalesOrder.objects.count())
 
         self.assertEqual(
-            force_text(response.content),
-            SalesOrder.objects.first().get_absolute_url()
+            # force_text(response.content),
+            force_str(response.content),
+            SalesOrder.objects.first().get_absolute_url(),
         )
 
     @skipIfCustomQuote

creme/creme_core/apps.py

@@ -156,6 +156,10 @@ def ready(self):
         for fname in ('app_label', 'model'):
             get_ct_field(fname).set_tags(viewable=False)
 
+        # NB: the original prefix with app's name => ugly choices for final users
+        #     => use gettext+context had smooth translation instead
+        ContentType.__str__ = lambda this: this.name
+
 
 class CremeAppConfig(AppConfig):
     # True => App can be used by some services

creme/creme_core/management/commands/build_secret_key.py

@@ -49,7 +49,7 @@ def handle(self, **options):
             from hashlib import sha256
             from time import time
 
-            from django.utils.encoding import force_text
+            from django.utils.encoding import force_str  # force_text
 
             choice = random.choice
 
@@ -66,7 +66,8 @@ def handle(self, **options):
 
             random.seed(
                 sha256(
-                    f'{random.getstate()}{time()}{force_text(kb_seed)}'.encode('utf-8')
+                    # f'{random.getstate()}{time()}{force_text(kb_seed)}'.encode('utf-8')
+                    f'{random.getstate()}{time()}{force_str(kb_seed)}'.encode('utf-8')
                 ).digest()
             )
 

creme/creme_core/management/commands/creme_uninstall.py

@@ -29,7 +29,7 @@
 from django.db import DEFAULT_DB_ALIAS, connections
 from django.db.migrations.recorder import MigrationRecorder
 from django.dispatch import receiver
-from django.utils.encoding import force_text
+from django.utils.encoding import force_str  # force_text
 
 from creme.creme_core.core.setting_key import setting_key_registry
 from creme.creme_core.gui.bricks import Brick
@@ -470,7 +470,8 @@ def _delete_tables(self, app_config, app_label, verbosity):
                     ' [KO] Original error: {error}.\n'
                     'Remaining tables:\n'
                     '{models}\n'.format(
-                        error=force_text(e),  # PostGreSQL returns localized errors...
+                        # error=force_text(e),  # PostGreSQL returns localized errors...
+                        error=force_str(e),  # PostGreSQL returns localized errors...
                         models='\n'.join(model._meta.db_table for model in models),
                     )
                 )

creme/creme_core/management/commands/entity_factory.py

@@ -290,7 +290,6 @@ class Command(BaseCommand):
 
     SQL_OPTIMISERS = {
         'django.db.backends.mysql': OptimizeMySQLContext,
-        'django.db.backends.postgresql_psycopg2': OptimizePGSQLContext,
         'django.db.backends.postgresql': OptimizePGSQLContext,
         # TODO: other DBRMS ?
     }

creme/creme_core/management/commands/i18n_overload.py

@@ -2,7 +2,7 @@
 
 ################################################################################
 #
-# Copyright (c) 2009-2020 Hybird
+# Copyright (c) 2009-2021 Hybird
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -32,7 +32,7 @@
 from django.apps import apps
 from django.conf import settings
 from django.core.management.base import BaseCommand, CommandError
-from django.utils.encoding import smart_text
+from django.utils.encoding import smart_str
 
 APP_NAME = 'locale_overload'  # TODO: can configure it with command options ??
 
@@ -181,7 +181,7 @@ def _overload_terms(self, language, verbosity, polib, file_name, *args):
                                                     .localize(datetime.now()) \
                                                     .strftime('%Y-%m-%d %H:%M%z')
 
-        terms = [smart_text(arg) for arg in args]
+        terms = [smart_str(arg) for arg in args]
         entry_count = 0
 
         for app_pofile in self._iter_pofiles(language, polib, file_name):

creme/creme_core/middleware/exceptions.py

@@ -2,7 +2,7 @@
 
 ################################################################################
 #    Creme is a free/open-source Customer Relationship Management software
-#    Copyright (C) 2009-2020  Hybird
+#    Copyright (C) 2009-2021  Hybird
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as published by
@@ -25,7 +25,7 @@
 from django.http import Http404, HttpResponse
 from django.shortcuts import render
 from django.utils.deprecation import MiddlewareMixin
-from django.utils.encoding import smart_text
+from django.utils.encoding import smart_str  # smart_text
 
 from creme.creme_core.core import exceptions as creme_exceptions
 
@@ -41,7 +41,8 @@ class _AlternativeErrorMiddleware(MiddlewareMixin):
 
     def process_exception(self, request, exception):
         if self.error is None or isinstance(exception, self.error):
-            msg = smart_text(exception)
+            # msg = smart_text(exception)
+            msg = smart_str(exception)
 
             if request.is_ajax():
                 if self.log_ajax:
@@ -52,9 +53,10 @@ def process_exception(self, request, exception):
             if self.template is None:
                 return
 
-            return render(request, self.template,
-                          {'error_message': msg}, status=self.status,
-                         )
+            return render(
+                request, self.template,
+                {'error_message': msg}, status=self.status,
+            )
 
 
 class BadRequestMiddleware(_AlternativeErrorMiddleware):

creme/creme_core/models/fields.py

@@ -198,6 +198,7 @@ def formfield(self, **kwargs):
 
 
 # TODO: factorise with CTypeForeignKey
+#       (NB: using <descriptor_class> is harder than just move __get__/__set__ in a class...)
 class CTypeOneToOneField(models.OneToOneField):
     def __init__(self, **kwargs):
         kwargs['to'] = 'contenttypes.ContentType'

creme/creme_core/templatetags/creme_core_tags.py

@@ -31,7 +31,7 @@
 from django.template import Template, TemplateSyntaxError
 from django.template.defaulttags import TemplateLiteral
 from django.template.library import token_kwargs
-from django.utils.encoding import force_text
+from django.utils.encoding import force_str  # force_text
 from django.utils.html import escape, format_html_join
 from django.utils.safestring import mark_safe
 
@@ -658,7 +658,8 @@ def render(self, context):
             logger.warning('jsondatablock tag do not accept custom "type" attribute')
 
         attrs = ''.join(
-            f' {k}="{escape(force_text(v.resolve(context)))}"'
+            # f' {k}="{escape(force_text(v.resolve(context)))}"'
+            f' {k}="{escape(force_str(v.resolve(context)))}"'
             for k, v in kwargs.items()
         )
 

creme/creme_core/tests/gui/test_field_printers.py

@@ -1119,7 +1119,8 @@ def test_registry_fk(self):
         self.assertEqual(str(casca.image), get_csv_val(casca, 'image', user))
 
         self.assertEqual(
-            '<p>Casca&#39;s selfie</p>',
+            # '<p>Casca&#39;s selfie</p>',
+            '<p>Casca&#x27;s selfie</p>',
             get_html_val(casca, 'image__description', user)
         )
         self.assertEqual(
@@ -1310,7 +1311,8 @@ def test_registry_credentials(self):
             get_html_val(judo, 'image', user)
         )
         self.assertEqual(
-            '<p>Judo&#39;s selfie</p>',
+            # '<p>Judo&#39;s selfie</p>',
+            '<p>Judo&#x27;s selfie</p>',
             get_html_val(judo, 'image__description', user)
         )
 

creme/creme_core/tests/models/test_custom_field.py

@@ -517,12 +517,13 @@ def test_multi_enum02(self):
             entity=orga,
         )
 
-        with self.assertNumQueries(3):
+        # with self.assertNumQueries(3):
+        with self.assertNumQueries(2):
             cf_value.set_value_n_save([enum_value1, enum_value2])
 
         self.assertSetEqual(
             {enum_value1, enum_value2},
-            {*self.refresh(cf_value).value.all()}
+            {*self.refresh(cf_value).value.all()},
         )
 
     def test_delete(self):

creme/creme_core/tests/views/test_job.py

@@ -6,7 +6,7 @@
 from django.db.models import Max
 from django.test.utils import override_settings
 from django.urls import reverse
-from django.utils.encoding import smart_text
+from django.utils.encoding import smart_str
 from django.utils.formats import date_format
 from django.utils.timezone import localtime, now
 from django.utils.translation import gettext as _
@@ -51,7 +51,7 @@ def tearDown(self):
 
     # TODO: move to base class ?
     def _assertCount(self, response, found, count):
-        self.assertEqual(count, smart_text(response.content).count(found))
+        self.assertEqual(count, smart_str(response.content).count(found))
 
     def _build_enable_url(self, job):
         return reverse('creme_core__enable_job', args=(job.id,))

creme/creme_core/tests/views/test_listview.py

@@ -5,15 +5,16 @@
 from functools import partial
 from json import dumps as json_dump
 from random import shuffle
+from urllib.parse import quote
 from xml.etree.ElementTree import tostring as html_tostring
 
 from django.conf import settings
 from django.contrib.contenttypes.models import ContentType
 from django.db.models import Q
 from django.test.utils import override_settings
 from django.urls import reverse
-from django.utils.encoding import force_text
-from django.utils.http import urlquote
+from django.utils.encoding import force_str  # force_text
+# from django.utils.http import urlquote
 from django.utils.timezone import now
 from django.utils.translation import gettext as _
 from django.utils.translation import pgettext
@@ -429,7 +430,8 @@ def post(selection):
             self.assertInHTML(
                 f'<input class="lv-state-field" value="{selection}" '
                 f'name="selection" type="hidden" />',
-                force_text(response.content),
+                # force_text(response.content),
+                force_str(response.content),
             )
 
         post('none')
@@ -450,7 +452,8 @@ def get(selection):
             self.assertInHTML(
                 f'<input class="lv-state-field" value="{selection}" '
                 f'name="selection" type="hidden" />',
-                force_text(response.content),
+                # force_text(response.content),
+                force_str(response.content),
             )
 
         get('none')
@@ -1003,7 +1006,8 @@ def test_ordering_fastmode_01(self):
             r'.creme_core_fakecontact.\..birthday. ASC( NULLS FIRST)?, '
             r'.creme_core_fakecontact.\..last_name. ASC( NULLS FIRST)?, '
             r'.creme_core_fakecontact.\..first_name. ASC( NULLS FIRST)?, '
-            r'.creme_core_fakecontact.\..cremeentity_ptr_id. ASC( NULLS FIRST)?  LIMIT'
+            # r'.creme_core_fakecontact.\..cremeentity_ptr_id. ASC( NULLS FIRST)?  LIMIT'
+            r'.creme_core_fakecontact.\..cremeentity_ptr_id. ASC( NULLS FIRST)? LIMIT'
         )
 
     @override_settings(FAST_QUERY_MODE_THRESHOLD=2)
@@ -1014,7 +1018,8 @@ def test_ordering_fastmode_02(self):
             sql,
             r'ORDER BY'
             r' .creme_core_fakecontact.\..birthday. ASC( NULLS FIRST)?,'
-            r' .creme_core_fakecontact.\..cremeentity_ptr_id. ASC( NULLS FIRST)?  LIMIT'
+            # r' .creme_core_fakecontact.\..cremeentity_ptr_id. ASC( NULLS FIRST)?  LIMIT'
+            r' .creme_core_fakecontact.\..cremeentity_ptr_id. ASC( NULLS FIRST)? LIMIT'
         )
 
     def test_efilter01(self):
@@ -1176,8 +1181,10 @@ def test_header_buttons(self):
         dl_uri = data_hrefs[1]
         self.assertStartsWith(dl_uri, dl_url)
         self.assertIn(f'hfilter={hf.id}', dl_uri)
-        self.assertIn(f'&extra_q={urlquote(q_filter)}', dl_uri)
-        self.assertIn(f'&search-regular_field-phone={urlquote(searched_phone)}', dl_uri)
+        # self.assertIn(f'&extra_q={urlquote(q_filter)}', dl_uri)
+        self.assertIn(f'&extra_q={quote(q_filter)}', dl_uri)
+        # self.assertIn(f'&search-regular_field-phone={urlquote(searched_phone)}', dl_uri)
+        self.assertIn(f'&search-regular_field-phone={quote(searched_phone)}', dl_uri)
 
         dl_header_uri = data_hrefs[2]
         self.assertStartsWith(dl_header_uri, dl_url)