Compatibility with Django 2, and functional fixes.

Ignore migrations and a lot more in .gitignore.
Solved stack trace in mgaitan#155
Transfer page instance on page_save in signals.
assignment_tag -> simple_tag in waliki_tags.

.gitignore

@@ -1,49 +1,125 @@
-# preciosa
-site_media
-datasets
-backups
-local_settings.py
-waliki_data
-waliki_attachments
-.nose*
-.noseids
-*.db
-*.sqlite3
-*.swp
-docs/_build/*
-
+# Byte-compiled / optimized / DLL files
+__pycache__/
 *.py[cod]
+*$py.class
 
 # C extensions
 *.so
 
-# Packages
-*.egg
-*.egg-info
-dist
-build
-eggs
-parts
-bin
-var
-sdist
-develop-eggs
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
 .installed.cfg
-lib
-lib64
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
 
 # Installer logs
 pip-log.txt
+pip-delete-this-directory.txt
 
 # Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
 .coverage
-.tox
+.coverage.*
+.cache
 nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.pytest_cache/
 
 # Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
 
-# Mr Developer
-.mr.developer.cfg
-.project
-.pydevproject
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
 .ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# project specific
+waliki_data
+
+# Django
+*/migrations/
+
+# tags file
+tags

waliki/models.py

@@ -1,30 +1,34 @@
 # -*- coding: utf-8 -*-
-import os
 import codecs
-import shutil
+import os
 import os.path
+import shutil
+
 from django import VERSION
+from django.conf import settings
+from django.contrib.auth import get_user_model
+from django.contrib.auth.models import AnonymousUser, Group, Permission
+from django.core.cache import cache
 from django.db import models
 from django.db.models import Q
+from django.db.models.signals import post_save, pre_delete
 from django.db.utils import IntegrityError
-from django.conf import settings
-if VERSION[:2] >= (1, 10):
-    from django.urls import reverse
-else:
-    from django.core.urlresolvers import reverse
 from django.dispatch import receiver
+from django.utils.encoding import python_2_unicode_compatible
 from django.utils.six import string_types
 from django.utils.translation import ugettext_lazy as _
-from django.utils.encoding import python_2_unicode_compatible
-from django.contrib.auth.models import Permission, Group, AnonymousUser
-from django.contrib.auth import get_user_model
-from django.core.cache import cache
-from django.db.models.signals import post_save, pre_delete
+
 from docutils.utils import SystemMessage
+from waliki.settings import (WALIKI_CACHE_TIMEOUT, WALIKI_DATA_DIR,
+                             WALIKI_DEFAULT_MARKUP, WALIKI_MARKUPS_SETTINGS,
+                             get_slug, sanitize)
+
 from . import _markups
-from waliki.settings import (get_slug, sanitize, WALIKI_DEFAULT_MARKUP,
-                             WALIKI_MARKUPS_SETTINGS, WALIKI_DATA_DIR,
-                             WALIKI_CACHE_TIMEOUT)
+
+if VERSION[:2] >= (1, 10):
+    from django.urls import reverse
+else:
+    from django.core.urlresolvers import reverse
 
 @python_2_unicode_compatible
 class Page(models.Model):
@@ -120,7 +124,7 @@ def get_markup_instance(markup):
 
     @staticmethod
     def preview(markup, text):
-        content = Page.get_markup_instance(markup).get_document_body(text)
+        content = Page.get_markup_instance(markup).convert(text).get_document_body()
         content= sanitize(content)
         return content
 
@@ -132,7 +136,7 @@ def markup_(self):
 
     def _get_part(self, part):
         try:
-            return getattr(self.markup_, part)(self.raw)
+            return getattr(self.markup_.convert(self.raw), part)
         except SystemMessage:
             return ''
 
@@ -158,7 +162,6 @@ def get_cached_content(self):
 
         if cached_content is None:
             cached_content = self._get_part('get_document_body')
-            cached_content = sanitize(cached_content)
             cache.set(cache_key, cached_content, WALIKI_CACHE_TIMEOUT)
         return cached_content
 

waliki/signals.py

@@ -1,5 +1,5 @@
 import django.dispatch
 
 page_preedit = django.dispatch.Signal(providing_args=["page"])
-page_saved = django.dispatch.Signal(providing_args=["raw", "author", "message"])
+page_saved = django.dispatch.Signal(providing_args=["raw", "page", "author", "message"])
 page_moved = django.dispatch.Signal(providing_args=["page", "old_path", "author", "message"])

waliki/templatetags/waliki_tags.py

@@ -1,14 +1,14 @@
-from django import VERSION
-from django import template
+from django import VERSION, template
+from django.utils.translation import ugettext_lazy as _
+from waliki import settings
+from waliki.acl import check_perms as check_perms_helper
+from waliki.forms import PageForm
+from waliki.models import Page
+
 if VERSION[:2] >= (1, 10):
     from django.urls import reverse
 else:
     from django.core.urlresolvers import reverse
-from django.utils.translation import ugettext_lazy as _
-from waliki.acl import check_perms as check_perms_helper
-from waliki.models import Page
-from waliki.forms import PageForm
-from waliki import settings
 
 
 register = template.Library()
@@ -169,7 +169,7 @@ def waliki_box(context, slug, show_edit=True, *args, **kwargs):
     }
 
 
-@register.assignment_tag
+@register.simple_tag
 def waliki_breadcrumbs(slug):
     if not settings.WALIKI_BREADCRUMBS:
         return None