Hello, After upgrading Django from 2.0.8 to 2.1.2, the admin interface no longer seems to work due to some problems with our widgets. This is the error that I get:
[image: image.png] And here is the full call stack: Environment: Request Method: GET Request URL: http://localhost:8000/admin/website/person/2/change/ Django Version: 2.1.2 Python Version: 3.6.3 Installed Applications: ['website.apps.WebsiteConfig', 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'django_extensions', 'image_cropping', 'easy_thumbnails', 'sortedm2m', 'sortedm2m_filter_horizontal_widget', 'rest_framework'] Installed Middleware: ['django.middleware.security.SecurityMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware'] Template error: In template /usr/local/lib/python3.6/site-packages/django/contrib/admin/templates/admin/includes/fieldset.html, error at line 19 render() got an unexpected keyword argument 'renderer' 9 : {% for field in line %} 10 : <div{% if not line.fields|length_is:'1' %} class="fieldBox{% if field.field.name %} field-{{ field.field.name }}{% endif %}{% if not field.is_readonly and field.errors %} errors{% endif %}{% if field.field.is_hidden %} hidden{% endif %}"{% elif field.is_checkbox %} class="checkbox-row"{% endif %}> 11 : {% if not line.fields|length_is:'1' and not field.is_readonly %}{{ field.errors }}{% endif %} 12 : {% if field.is_checkbox %} 13 : {{ field.field }}{{ field.label_tag }} 14 : {% else %} 15 : {{ field.label_tag }} 16 : {% if field.is_readonly %} 17 : <div class="readonly">{{ field.contents }}</div> 18 : {% else %} 19 : {{ field.field }} 20 : {% endif %} 21 : {% endif %} 22 : {% if field.field.help_text %} 23 : <div class="help">{{ field.field.help_text|safe }}</div> 24 : {% endif %} 25 : </div> 26 : {% endfor %} 27 : </div> 28 : {% endfor %} 29 : </fieldset> Traceback: File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner 34. response = get_response(request) File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response 156. response = self.process_exception_by_middleware(e, request) File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response 154. response = response.render() File "/usr/local/lib/python3.6/site-packages/django/template/response.py" in render 106. self.content = self.rendered_content File "/usr/local/lib/python3.6/site-packages/django/template/response.py" in rendered_content 83. content = template.render(context, self._request) File "/usr/local/lib/python3.6/site-packages/django/template/backends/django.py" in render 61. return self.template.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render 171. return self._render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in _render 163. return self.nodelist.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render 937. bit = node.render_annotated(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render_annotated 904. return self.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/loader_tags.py" in render 150. return compiled_parent._render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in _render 163. return self.nodelist.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render 937. bit = node.render_annotated(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render_annotated 904. return self.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/loader_tags.py" in render 150. return compiled_parent._render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in _render 163. return self.nodelist.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render 937. bit = node.render_annotated(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render_annotated 904. return self.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/loader_tags.py" in render 62. result = block.nodelist.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render 937. bit = node.render_annotated(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render_annotated 904. return self.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/loader_tags.py" in render 62. result = block.nodelist.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render 937. bit = node.render_annotated(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render_annotated 904. return self.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/defaulttags.py" in render 209. nodelist.append(node.render_annotated(context)) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render_annotated 904. return self.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/loader_tags.py" in render 188. return template.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render 173. return self._render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in _render 163. return self.nodelist.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render 937. bit = node.render_annotated(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render_annotated 904. return self.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/defaulttags.py" in render 209. nodelist.append(node.render_annotated(context)) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render_annotated 904. return self.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/defaulttags.py" in render 209. nodelist.append(node.render_annotated(context)) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render_annotated 904. return self.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/defaulttags.py" in render 309. return nodelist.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render 937. bit = node.render_annotated(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render_annotated 904. return self.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/defaulttags.py" in render 309. return nodelist.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render 937. bit = node.render_annotated(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render_annotated 904. return self.render(context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render 993. return render_value_in_context(output, context) File "/usr/local/lib/python3.6/site-packages/django/template/base.py" in render_value_in_context 972. value = str(value) File "/usr/local/lib/python3.6/site-packages/django/utils/html.py" in <lambda> 397. klass.__str__ = lambda self: mark_safe(klass_str(self)) File "/usr/local/lib/python3.6/site-packages/django/forms/boundfield.py" in __str__ 33. return self.as_widget() File "/usr/local/lib/python3.6/site-packages/django/forms/boundfield.py" in as_widget 93. renderer=self.form.renderer, Exception Type: TypeError at /admin/website/person/2/change/ Exception Value: render() got an unexpected keyword argument 'renderer' It seems like downgrading to 2.0.8 temporarily fixes our problem, but I was wondering if there is a better fix that allows us to have 2.1.2 + a working admin interface? 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