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AttributeError: type object 'GroupType' has no attribute 'meta'

The following discussion from !270 (merged) should be addressed:

  • @debdolph started a discussion: (+3 comments)

    Strange exception at /group/create:

    Internal Server Error: /group/create
Traceback (most recent call last):
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/core/handlers/base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/core/handlers/base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/usr/lib/python3.7/contextlib.py", line 74, in inner
    return func(*args, **kwds)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/rules/contrib/views.py", line 221, in _wrapped_view
    return view_func(request, *args, **kwargs)
  File "/home/dolphi/Projects/AlekSIS/AlekSIS/aleksis/core/views.py", line 283, in edit_group
    return render(request, "core/edit_group.html", context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/shortcuts.py", line 19, in render
    content = loader.render_to_string(template_name, context, request, using=using)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/loader.py", line 62, in render_to_string
    return template.render(context, request)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/backends/django.py", line 61, in render
    return self.template.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 171, in render
    return self._render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/test/utils.py", line 95, in instrumented_test_render
    return self.nodelist.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/loader_tags.py", line 150, in render
    return compiled_parent._render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/test/utils.py", line 95, in instrumented_test_render
    return self.nodelist.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/loader_tags.py", line 62, in render
    result = block.nodelist.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/templatetags/material_form.py", line 142, in render
    return template.render(context_flatten(context))
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/backends/django.py", line 61, in render
    return self.template.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 171, in render
    return self._render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/test/utils.py", line 95, in instrumented_test_render
    return self.nodelist.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/templatetags/material_form.py", line 203, in render
    value = self.nodelist.render(context).strip()
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/defaulttags.py", line 309, in render
    return nodelist.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/templatetags/material_form.py", line 203, in render
    value = self.nodelist.render(context).strip()
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/templatetags/material_form_internal.py", line 91, in render
    return element.render(context, **options)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/base.py", line 53, in render
    return template.render(context.flatten())
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/backends/django.py", line 61, in render
    return self.template.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 171, in render
    return self._render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/test/utils.py", line 95, in instrumented_test_render
    return self.nodelist.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/defaulttags.py", line 209, in render
    nodelist.append(node.render_annotated(context))
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/templatetags/material_form_internal.py", line 91, in render
    return element.render(context, **options)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/base.py", line 53, in render
    return template.render(context.flatten())
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/backends/django.py", line 61, in render
    return self.template.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 171, in render
    return self._render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/test/utils.py", line 95, in instrumented_test_render
    return self.nodelist.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/defaulttags.py", line 209, in render
    nodelist.append(node.render_annotated(context))
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/templatetags/material_form_internal.py", line 91, in render
    return element.render(context, **options)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/base.py", line 229, in render
    return template.render(context.flatten())
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/backends/django.py", line 61, in render
    return self.template.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 171, in render
    return self._render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/test/utils.py", line 95, in instrumented_test_render
    return self.nodelist.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/templatetags/material_form.py", line 200, in render
    _render_parts(context, children)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/templatetags/material_form.py", line 31, in _render_parts
    value = partnode.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/templatetags/material_form.py", line 200, in render
    _render_parts(context, children)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/templatetags/material_form.py", line 31, in _render_parts
    value = partnode.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/templatetags/material_form.py", line 203, in render
    value = self.nodelist.render(context).strip()
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/defaulttags.py", line 161, in render
    values = self.sequence.resolve(context, ignore_failures=True)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/template/base.py", line 697, in resolve
    new_obj = func(obj, *arg_vals)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/material/templatetags/material_form_internal.py", line 214, in select_options
    for option in bound_field.field.widget.choices:
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/forms/models.py", line 1141, in __iter__
    yield self.choice(obj)
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/forms/models.py", line 1153, in choice
    return (self.field.prepare_value(obj), self.field.label_from_instance(obj))
  File "/home/dolphi/Projects/AlekSIS/venv/lib/python3.7/site-packages/django/forms/models.py", line 1219, in label_from_instance
    return str(obj)
  File "/home/dolphi/Projects/AlekSIS/AlekSIS/aleksis/core/mixins.py", line 222, in __str__
    return f"{self.__class__.meta.name} {self.pk}"
AttributeError: type object 'GroupType' has no attribute 'meta'