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Any Report or Custom Script causes: 'str' object has no attribute '_meta' #5486

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opened 2025-12-29 19:28:35 +01:00 by adam · 1 comment
adam commented 2025-12-29 19:28:35 +01:00
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Originally created by @ziggekatten on GitHub (Oct 7, 2021).

Originally assigned to: @jeremystretch on GitHub.

NetBox version

v3.0.6

Python version

3.9

Steps to Reproduce

  1. Install or upgrade to 3.0.6
  2. Create a new report, or if you have existing one, place it in the correct reports folder.
  3. Go to Other-> Reports
  4. In the list of Reports, klick on any Report in the list

Expected Behavior

The page where I can run the report should be shown

Observed Behavior

A AttributeError was raised

'str' object has no attribute '_meta'

The same happens both for Reports and Custom Scripts. Trace below.

Environment:


Request Method: GET
Request URL: https://my.server.net/ipam-dev/extras/reports/testreport.DeviceConnectionsReport/

Django Version: 3.2.8
Python Version: 3.9.5
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.humanize',
 'corsheaders',
 'debug_toolbar',
 'graphiql_debug_toolbar',
 'django_filters',
 'django_tables2',
 'django_prometheus',
 'graphene_django',
 'mptt',
 'rest_framework',
 'taggit',
 'timezone_field',
 'circuits',
 'dcim',
 'ipam',
 'extras',
 'tenancy',
 'users',
 'utilities',
 'virtualization',
 'django_rq',
 'drf_yasg']
Installed Middleware:
['graphiql_debug_toolbar.middleware.DebugToolbarMiddleware',
 'django_prometheus.middleware.PrometheusBeforeMiddleware',
 'corsheaders.middleware.CorsMiddleware',
 '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',
 'django.middleware.security.SecurityMiddleware',
 'netbox.middleware.ExceptionHandlingMiddleware',
 'netbox.middleware.RemoteUserMiddleware',
 'netbox.middleware.LoginRequiredMiddleware',
 'netbox.middleware.APIVersionMiddleware',
 'netbox.middleware.ObjectChangeMiddleware',
 'django_prometheus.middleware.PrometheusAfterMiddleware']


Template error:
In template /opt/netbox/netbox/templates/base/base.html, error at line 11
   'str' object has no attribute '_meta'
   1 : {# Base template for (almost) all NetBox pages #}
   2 : {% load static %}
   3 : {% load helpers %}
   4 : <!DOCTYPE html>
   5 : <html
   6 :   lang="en"
   7 :   data-netbox-url-name="{{ request.resolver_match.url_name }}"
   8 :   data-netbox-base-path="{{ settings.BASE_PATH }}"
   9 :   {% with preferences|get_key:'ui.colormode' as color_mode %}
   10 :     {% if color_mode == 'dark'%}
   11 :        data-netbox-color-mode="dark"
   12 :     {% elif color_mode == 'light' %}
   13 :       data-netbox-color-mode="light"
   14 :     {% else %}
   15 :       data-netbox-color-mode="unset"
   16 :     {% endif %}
   17 :   {% endwith %}
   18 :   >
   19 :   <head>
   20 :     <meta charset="UTF-8" />
   21 :     <meta


Traceback (most recent call last):
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/views/generic/base.py", line 70, in view
    return self.dispatch(request, *args, **kwargs)
  File "/opt/netbox/netbox/utilities/views.py", line 47, in dispatch
    return super().dispatch(request, *args, **kwargs)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/views/generic/base.py", line 98, in dispatch
    return handler(request, *args, **kwargs)
  File "/opt/netbox/netbox/extras/views.py", line 657, in get
    return render(request, 'extras/report.html', {
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/shortcuts.py", line 19, in render
    content = loader.render_to_string(template_name, context, request, using=using)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/loader.py", line 62, in render_to_string
    return template.render(context, request)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/backends/django.py", line 61, in render
    return self.template.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 170, in render
    return self._render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/test/utils.py", line 100, in instrumented_test_render
    return self.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 938, in render
    bit = node.render_annotated(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 905, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/loader_tags.py", line 150, in render
    return compiled_parent._render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/test/utils.py", line 100, in instrumented_test_render
    return self.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 938, in render
    bit = node.render_annotated(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 905, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/loader_tags.py", line 150, in render
    return compiled_parent._render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/test/utils.py", line 100, in instrumented_test_render
    return self.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 938, in render
    bit = node.render_annotated(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 905, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/loader_tags.py", line 150, in render
    return compiled_parent._render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/test/utils.py", line 100, in instrumented_test_render
    return self.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 938, in render
    bit = node.render_annotated(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 905, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/loader_tags.py", line 62, in render
    result = block.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 938, in render
    bit = node.render_annotated(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 905, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/loader_tags.py", line 62, in render
    result = block.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 938, in render
    bit = node.render_annotated(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 905, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 988, in render
    output = self.filter_expression.resolve(context)
  File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 698, in resolve
    new_obj = func(obj, *arg_vals)
  File "/opt/netbox/netbox/utilities/templatetags/helpers.py", line 78, in meta
    return getattr(obj._meta, attr, '')

Exception Type: AttributeError at /ipam-dev/extras/reports/testreport.DeviceConnectionsReport/
Exception Value: 'str' object has no attribute '_meta'
Originally created by @ziggekatten on GitHub (Oct 7, 2021). Originally assigned to: @jeremystretch on GitHub. ### NetBox version v3.0.6 ### Python version 3.9 ### Steps to Reproduce 1. Install or upgrade to 3.0.6 2. Create a new report, or if you have existing one, place it in the correct reports folder. 3. Go to Other-> Reports 4. In the list of Reports, klick on any Report in the list ### Expected Behavior The page where I can run the report should be shown ### Observed Behavior A AttributeError was raised 'str' object has no attribute '_meta' The same happens both for Reports and Custom Scripts. Trace below. ``` Environment: Request Method: GET Request URL: https://my.server.net/ipam-dev/extras/reports/testreport.DeviceConnectionsReport/ Django Version: 3.2.8 Python Version: 3.9.5 Installed Applications: ['django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'django.contrib.humanize', 'corsheaders', 'debug_toolbar', 'graphiql_debug_toolbar', 'django_filters', 'django_tables2', 'django_prometheus', 'graphene_django', 'mptt', 'rest_framework', 'taggit', 'timezone_field', 'circuits', 'dcim', 'ipam', 'extras', 'tenancy', 'users', 'utilities', 'virtualization', 'django_rq', 'drf_yasg'] Installed Middleware: ['graphiql_debug_toolbar.middleware.DebugToolbarMiddleware', 'django_prometheus.middleware.PrometheusBeforeMiddleware', 'corsheaders.middleware.CorsMiddleware', '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', 'django.middleware.security.SecurityMiddleware', 'netbox.middleware.ExceptionHandlingMiddleware', 'netbox.middleware.RemoteUserMiddleware', 'netbox.middleware.LoginRequiredMiddleware', 'netbox.middleware.APIVersionMiddleware', 'netbox.middleware.ObjectChangeMiddleware', 'django_prometheus.middleware.PrometheusAfterMiddleware'] Template error: In template /opt/netbox/netbox/templates/base/base.html, error at line 11 'str' object has no attribute '_meta' 1 : {# Base template for (almost) all NetBox pages #} 2 : {% load static %} 3 : {% load helpers %} 4 : <!DOCTYPE html> 5 : <html 6 : lang="en" 7 : data-netbox-url-name="{{ request.resolver_match.url_name }}" 8 : data-netbox-base-path="{{ settings.BASE_PATH }}" 9 : {% with preferences|get_key:'ui.colormode' as color_mode %} 10 : {% if color_mode == 'dark'%} 11 : data-netbox-color-mode="dark" 12 : {% elif color_mode == 'light' %} 13 : data-netbox-color-mode="light" 14 : {% else %} 15 : data-netbox-color-mode="unset" 16 : {% endif %} 17 : {% endwith %} 18 : > 19 : <head> 20 : <meta charset="UTF-8" /> 21 : <meta Traceback (most recent call last): File "/opt/netbox/venv/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner response = get_response(request) File "/opt/netbox/venv/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/opt/netbox/venv/lib/python3.9/site-packages/django/views/generic/base.py", line 70, in view return self.dispatch(request, *args, **kwargs) File "/opt/netbox/netbox/utilities/views.py", line 47, in dispatch return super().dispatch(request, *args, **kwargs) File "/opt/netbox/venv/lib/python3.9/site-packages/django/views/generic/base.py", line 98, in dispatch return handler(request, *args, **kwargs) File "/opt/netbox/netbox/extras/views.py", line 657, in get return render(request, 'extras/report.html', { File "/opt/netbox/venv/lib/python3.9/site-packages/django/shortcuts.py", line 19, in render content = loader.render_to_string(template_name, context, request, using=using) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/loader.py", line 62, in render_to_string return template.render(context, request) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/backends/django.py", line 61, in render return self.template.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 170, in render return self._render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/test/utils.py", line 100, in instrumented_test_render return self.nodelist.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 938, in render bit = node.render_annotated(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 905, in render_annotated return self.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/loader_tags.py", line 150, in render return compiled_parent._render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/test/utils.py", line 100, in instrumented_test_render return self.nodelist.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 938, in render bit = node.render_annotated(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 905, in render_annotated return self.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/loader_tags.py", line 150, in render return compiled_parent._render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/test/utils.py", line 100, in instrumented_test_render return self.nodelist.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 938, in render bit = node.render_annotated(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 905, in render_annotated return self.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/loader_tags.py", line 150, in render return compiled_parent._render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/test/utils.py", line 100, in instrumented_test_render return self.nodelist.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 938, in render bit = node.render_annotated(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 905, in render_annotated return self.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/loader_tags.py", line 62, in render result = block.nodelist.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 938, in render bit = node.render_annotated(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 905, in render_annotated return self.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/loader_tags.py", line 62, in render result = block.nodelist.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 938, in render bit = node.render_annotated(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 905, in render_annotated return self.render(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 988, in render output = self.filter_expression.resolve(context) File "/opt/netbox/venv/lib/python3.9/site-packages/django/template/base.py", line 698, in resolve new_obj = func(obj, *arg_vals) File "/opt/netbox/netbox/utilities/templatetags/helpers.py", line 78, in meta return getattr(obj._meta, attr, '') Exception Type: AttributeError at /ipam-dev/extras/reports/testreport.DeviceConnectionsReport/ Exception Value: 'str' object has no attribute '_meta' ```
adam added the type: bugstatus: accepted labels 2025-12-29 19:28:35 +01:00
adam closed this issue 2025-12-29 19:28:35 +01:00
adam commented 2025-12-29 19:28:36 +01:00
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@hagbarddenstore commented on GitHub (Oct 7, 2021):

This is caused by the new code to support #6955.

The fix is to wrap the new code in templates/generic/object.html with an if.

Like this:

{% if object %}
<div class="float-end">
    <code class="text-muted" title="Object type and ID">
        {{ object|meta:"app_label" }}.{{ object|meta:"model_name" }}:{{ object.pk }}
        {% if object.slug %}({{ object.slug }}){% endif %}
    </code>
</div>
{% endif %}
@hagbarddenstore commented on GitHub (Oct 7, 2021): This is caused by the new code to support #6955. The fix is to wrap the new code in `templates/generic/object.html` with an if. Like this: ``` {% if object %} <div class="float-end"> <code class="text-muted" title="Object type and ID"> {{ object|meta:"app_label" }}.{{ object|meta:"model_name" }}:{{ object.pk }} {% if object.slug %}({{ object.slug }}){% endif %} </code> </div> {% endif %} ```
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