Integration of Django based plug-ins into wagtail - django

Question

Can anyone describe the general actions when integrating addons or widgets built originally for django in to wagtail? For a novice user, it's hard to understand exactly how to edit the code so that it works in wagtail cms.
For example, I'm trying to integrate two very useful Django addons(widgets) into my project and I encounter in both cases the problem, when it comes to customizing and inserting code into settings.py
In both cases i have to customize some code but we don't have settings.py in wagtail and if ill try to put this code:
COUNTRIES_OVERRIDE = {
'XZ': _('Tibet')
}
in to base.py I'm getting an error:
(env) C:\Users\xakep\Documents\GitHub\database\blemmy>manage.py runserver
Traceback (most recent call last):
File "C:\Users\xakep\Documents\GitHub\database\blemmy\manage.py",
line 10, in <module> execute_from_command_line(sys.argv)
File "C:\Python36\lib\site-packages\django\core\management\__init__.py",
line 363, in execute_from_command_line utility.execute()
File "C:\Python36\lib\site-packages\django\core\management\__init__.py",
line 307, in execute settings.INSTALLED_APPS
File "C:\Python36\lib\site-packages\django\conf\__init__.py", line 56,
in__getattr__self._setup(name)
File "C:\Python36\lib\site-packages\django\conf\__init__.py", line 41,
in _setup self._wrapped = Settings(settings_module)
File "C:\Python36\lib\site-packages\django\conf\__init__.py", line 110,
in__init__ mod = importlib.import_module(self.SETTINGS_MODULE)
File "C:\Python36\lib\importlib\__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 978, in _gcd_import
File "<frozen importlib._bootstrap>", line 961, in _find_and_load
File "<frozen importlib._bootstrap>", line 950, in
_find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 205, in
_call_with_frames_removed
File "C:\Users\xakep\Documents\GitHub\database\blemmy\blemmy\settings\
__init__.py", line 1, in <module> from .dev import *
File "C:\Users\xakep\Documents\GitHub\database\blemmy\blemmy\settings\
dev.py", line 2, in <module> from .base import *
File "C:\Users\xakep\Documents\GitHub\database\blemmy\blemmy\settings\
base.py", line 112, in <module> 'XZ': _('Tibet')
NameError: name '_' is not defined
If you can help(explane) me how to use similar projects in wagtail i have tons of good ideas =)
Thanks a lot!!!

Answer 1

base.py is the correct location for settings like this. In the Wagtail project structure, the settings are split up into dev.py (for settings only used in the development environment), production.py (for settings only used in production), and base.py (common to both), as described here: http://docs.wagtail.io/en/v1.11.1/reference/project_template.html#django-settings
The name '_' is not defined error isn't related to Wagtail - it's a detail that's missing from the django-countries documentation. Defining a function called _ is a standard convention for marking strings as translatable, described in the Django docs here: https://docs.djangoproject.com/en/1.11/topics/i18n/translation/
To fix it, add the following line to the top of your settings file:
from django.utils.translation import ugettext_lazy as _