nautobot.apps.views

Utilities for apps to implement UI views.

nautobot.apps.views.AdminRequiredMixin

Bases: AccessMixin

Allows access only to admin users.

nautobot.apps.views.BulkComponentCreateView

Bases: GetReturnURLMixin, ObjectPermissionRequiredMixin, View

Add one or more components (e.g. interfaces, console ports, etc.) to a set of Devices or VirtualMachines.

nautobot.apps.views.BulkCreateView

Bases: GetReturnURLMixin, ObjectPermissionRequiredMixin, View

Create new objects in bulk.

queryset: Base queryset for the objects being created form: Form class which provides the pattern field model_form: The ModelForm used to create individual objects pattern_target: Name of the field to be evaluated as a pattern (if any) template_name: The name of the template

nautobot.apps.views.BulkDeleteView

Bases: GetReturnURLMixin, ObjectPermissionRequiredMixin, View

Delete objects in bulk.

queryset: Custom queryset to use when retrieving objects (e.g. to select related objects) filter: FilterSet to apply when deleting by QuerySet table: The table used to display devices being deleted form: The form class used to delete objects in bulk template_name: The name of the template

get_form()

Provide a standard bulk delete form if none has been specified for the view

nautobot.apps.views.BulkEditView

Bases: GetReturnURLMixin, ObjectPermissionRequiredMixin, View

Edit objects in bulk.

queryset: Custom queryset to use when retrieving objects (e.g. to select related objects) filter: FilterSet to apply when deleting by QuerySet table: The table used to display devices being edited form: The form class used to edit objects in bulk template_name: The name of the template

extra_post_save_action(obj, form)

Extra actions after a form is saved

nautobot.apps.views.BulkImportView

Bases: GetReturnURLMixin, ObjectPermissionRequiredMixin, View

Import objects in bulk (CSV format).

Deprecated - replaced by ImportObjects system Job.

queryset: Base queryset for the model table: The django-tables2 Table used to render the list of imported objects template_name: The name of the template

nautobot.apps.views.BulkRenameView

Bases: GetReturnURLMixin, ObjectPermissionRequiredMixin, View

An extendable view for renaming objects in bulk.

get_selected_objects_parents_name(selected_objects)

Return selected_objects parent name.

This method is intended to be overridden by child classes to return the parent name of the selected objects.

Parameters:

Name	Type	Description	Default
selected_objects	list[BaseModel]	The objects being renamed	required

Returns:

Type	Description
str	The parent name of the selected objects

nautobot.apps.views.ComponentCreateView

Bases: GetReturnURLMixin, ObjectPermissionRequiredMixin, View

Add one or more components (e.g. interfaces, console ports, etc.) to a Device or VirtualMachine.

nautobot.apps.views.ContentTypePermissionRequiredMixin

Bases: AccessMixin

Similar to Django's built-in PermissionRequiredMixin, but extended to check model-level permission assignments. This is related to ObjectPermissionRequiredMixin, except that is does not enforce object-level permissions, and fits within Nautobot's custom permission enforcement system.

An optional iterable of statically declared permissions to evaluate in addition to those

derived from the object type

get_required_permission()

Return the specific permission necessary to perform the requested action on an object.

nautobot.apps.views.GenericView

Bases: LoginRequiredMixin, View

Base class for non-object-related views.

Enforces authentication, which Django's base View does not by default.

nautobot.apps.views.GetReturnURLMixin

Provides logic for determining where a user should be redirected after processing a form.

nautobot.apps.views.NautobotHTMLRenderer

Bases: BrowsableAPIRenderer

Inherited from BrowsableAPIRenderer to do most of the heavy lifting for getting the context needed for templates and template rendering.

construct_table(view, **kwargs)

Helper function to construct and paginate the table for rendering used in the ObjectListView, ObjectBulkUpdateView and ObjectBulkDestroyView.

construct_user_permissions(request, model)

Helper function to gather the user's permissions to add, change, delete and view the model, and then render the action buttons accordingly allowed in the ObjectListView UI.

get_context(data, accepted_media_type, renderer_context)

Override get_context() from BrowsableAPIRenderer to obtain the context data we need to render our templates. context variable contains template context needed to render Nautobot generic templates / circuits templates. Override this function to add additional key/value pair to pass it to your templates.

get_dynamic_filter_form(view, request, *args, filterset_class=None, **kwargs)

Helper function to obtain the filter_form_class, and then initialize and return the filter_form used in the ObjectListView UI.

render(data, accepted_media_type=None, renderer_context=None)

Overrode render() from BrowsableAPIRenderer to set self.template with NautobotViewSet's get_template_name() before it is rendered.

validate_action_buttons(view, request)

Verify actions in self.action_buttons are valid view actions.

nautobot.apps.views.NautobotUIViewSet

Bases: ObjectDetailViewMixin, ObjectListViewMixin, ObjectEditViewMixin, ObjectDestroyViewMixin, ObjectBulkDestroyViewMixin, ObjectBulkCreateViewMixin, ObjectBulkUpdateViewMixin, ObjectChangeLogViewMixin, ObjectNotesViewMixin

Nautobot BaseViewSet that is intended for UI use only. It provides default Nautobot functionalities such as create(), update(), partial_update(), bulk_update(), destroy(), bulk_destroy(), retrieve() notes(), changelog() and list() actions.

nautobot.apps.views.NautobotViewSetMixin

Bases: GenericViewSet, AccessMixin, GetReturnURLMixin, FormView

NautobotViewSetMixin is an aggregation of various mixins from DRF, Django and Nautobot to acheive the desired behavior pattern for NautobotUIViewSet

check_permissions(request)

Check whether the user has the permissions needed to perform certain actions.

dispatch(request, *args, **kwargs)

Override the default dispatch() method to check permissions first. Used to determine whether the user has permissions to a view and object-level permissions. Using AccessMixin handle_no_permission() to deal with Object-Level permissions and API-Level permissions in one pass.

form_invalid(form)

Handle invalid forms.

form_save(form, **kwargs)

Generic method to save the object from form. Should be overriden by user if customization is needed.

form_valid(form)

Handle valid forms and redirect to success_url.

get_action()

Helper method for retrieving action and if action not set defaulting to action name.

get_extra_context(request, instance=None)

Return any additional context data for the template. request: The current request instance: The object being viewed

get_filter_params(request)

Helper function - take request.GET and discard any parameters that are not used for queryset filtering.

get_form(*args, **kwargs)

Helper function to get form for different views if specified. If not, return instantiated form using form_class.

get_form_class(**kwargs)

Helper function to get form_class for different views.

get_object()

Returns the object the view is displaying. You may want to override this if you need to provide non-standard queryset lookups. Eg if objects are referenced using multiple keyword arguments in the url conf.

get_permissions_for_model(model, actions)

Resolve the named permissions for a given model (or instance) and a list of actions (e.g. view or add).

:param model: A model or instance :param actions: A list of actions to perform on the model

get_queryset()

Get the list of items for this view. This must be an iterable, and may be a queryset. Defaults to using self.queryset. This method should always be used rather than accessing self.queryset directly, as self.queryset gets evaluated only once, and those results are cached for all subsequent requests. Override the original get_queryset() to apply permission specific to the user and action.

get_required_permission()

Obtain the permissions needed to perform certain actions on a model.

nautobot.apps.views.ObjectBulkCreateViewMixin

Bases: NautobotViewSetMixin

UI mixin to bulk create model instances.

Deprecated - use ImportObjects system Job instead.

nautobot.apps.views.ObjectBulkDestroyViewMixin

Bases: NautobotViewSetMixin, BulkDestroyModelMixin

UI mixin to bulk destroy model instances.

bulk_destroy(request, *args, **kwargs)

Call perform_bulk_destroy(). The function exist to keep the DRF's get/post pattern of {action}/perform_{action}, we will need it when we transition from using forms to serializers in the UI. User should override this function to handle any actions as needed before bulk destroy.

perform_bulk_destroy(request, **kwargs)

request.POST "_delete": Function to render the user selection of objects in a table form/BulkDestroyConfirmationForm via Response that is passed to NautobotHTMLRenderer. request.POST "_confirm": Function to validate the table form/BulkDestroyConfirmationForm and to perform the action of bulk destroy. Render the form with errors if exceptions are raised.

nautobot.apps.views.ObjectBulkUpdateViewMixin

Bases: NautobotViewSetMixin, BulkUpdateModelMixin

UI mixin to bulk update model instances.

bulk_update(request, *args, **kwargs)

Call perform_bulk_update(). The function exist to keep the DRF's get/post pattern of {action}/perform_{action}, we will need it when we transition from using forms to serializers in the UI. User should override this function to handle any actions as needed before bulk update.

perform_bulk_update(request, **kwargs)

request.POST "_edit": Function to render the user selection of objects in a table form/BulkUpdateForm via Response that is passed to NautobotHTMLRenderer. request.POST "_apply": Function to validate the table form/BulkUpdateForm and to perform the action of bulk update. Render the form with errors if exceptions are raised.

nautobot.apps.views.ObjectChangeLogViewMixin

Bases: NautobotViewSetMixin

UI mixin to list a model's changelog queryset

nautobot.apps.views.ObjectDeleteView

Bases: GetReturnURLMixin, ObjectPermissionRequiredMixin, View

Delete a single object.

queryset: The base queryset for the object being deleted template_name: The name of the template

get_object(kwargs)

Retrieve an object based on kwargs.

nautobot.apps.views.ObjectDestroyViewMixin

Bases: NautobotViewSetMixin, DestroyModelMixin

UI mixin to destroy a model instance.

destroy(request, *args, **kwargs)

request.GET: render the ObjectDeleteConfirmationForm which is passed to NautobotHTMLRenderer as Response. request.POST: call perform_destroy() which validates the form and perform the action of delete. Override to add more variables to Response

perform_destroy(request, **kwargs)

Function to validate the ObjectDeleteConfirmationForm and to delete the object.

nautobot.apps.views.ObjectDetailViewMixin

Bases: NautobotViewSetMixin, RetrieveModelMixin

UI mixin to retrieve a model instance.

retrieve(request, *args, **kwargs)

Retrieve a model instance.

nautobot.apps.views.ObjectDynamicGroupsView

Bases: GenericView

Present a list of dynamic groups associated to a particular object. base_template: The name of the template to extend. If not provided, "/.html" will be used.

nautobot.apps.views.ObjectEditView

Bases: GetReturnURLMixin, ObjectPermissionRequiredMixin, View

Create or edit a single object.

queryset: The base queryset for the object being modified model_form: The form used to create or edit the object template_name: The name of the template

get_extra_context(request, instance)

Return any additional context data for the template.

Parameters:

Name	Type	Description	Default
request	HttpRequest	The current request	required
instance	Model	The object being edited	required

Returns:

Type	Description
dict	Additional context data

get_object(kwargs)

Retrieve an object based on kwargs.

successful_post(request, obj, created, logger)

Callback after the form is successfully saved but before redirecting the user.

nautobot.apps.views.ObjectEditViewMixin

Bases: NautobotViewSetMixin, CreateModelMixin, UpdateModelMixin

UI mixin to create or update a model instance.

create(request, *args, **kwargs)

request.GET: render the ObjectForm which is passed to NautobotHTMLRenderer as Response. request.POST: call perform_create() which validates the form and perform the action of create. Override to add more variables to Response.

perform_create(request, *args, **kwargs)

Function to validate the ObjectForm and to create a new object.

perform_update(request, *args, **kwargs)

Function to validate the ObjectEditForm and to update/partial_update an existing object.

update(request, *args, **kwargs)

request.GET: render the ObjectEditForm which is passed to NautobotHTMLRenderer as Response. request.POST: call perform_update() which validates the form and perform the action of update/partial_update of an existing object. Override to add more variables to Response.

nautobot.apps.views.ObjectImportView

Bases: GetReturnURLMixin, ObjectPermissionRequiredMixin, View

Import a single object (YAML or JSON format).

queryset: Base queryset for the objects being created model_form: The ModelForm used to create individual objects related_object_forms: A dictionary mapping of forms to be used for the creation of related (child) objects template_name: The name of the template

nautobot.apps.views.ObjectListView

Bases: ObjectPermissionRequiredMixin, View

List a series of objects.

The queryset of objects to display. Note: Prefetching related objects is not necessary, as the

table will prefetch objects as needed depending on the columns being displayed.

filter: A django-filter FilterSet that is applied to the queryset filter_form: The form used to render filter options table: The django-tables2 Table used to render the objects list template_name: The name of the template non_filter_params: List of query parameters that are not used for queryset filtering

get_filter_params(request)

Helper function - take request.GET and discard any parameters that are not used for queryset filtering.

queryset_to_yaml()

Export the queryset of objects as concatenated YAML documents.

validate_action_buttons(request)

Verify actions in self.action_buttons are valid view actions.

nautobot.apps.views.ObjectListViewMixin

Bases: NautobotViewSetMixin, ListModelMixin

UI mixin to list a model queryset

filter_queryset(queryset)

Filter a query with request querystrings.

list(request, *args, **kwargs)

List the model instances.

queryset_to_yaml()

Export the queryset of objects as concatenated YAML documents.

nautobot.apps.views.ObjectNotesView

Bases: GenericView

Present a list of notes associated to a particular object. base_template: The name of the template to extend. If not provided, "/.html" will be used.

nautobot.apps.views.ObjectNotesViewMixin

Bases: NautobotViewSetMixin

UI Mixin for an Object's Notes.

nautobot.apps.views.ObjectPermissionRequiredMixin

Bases: AccessMixin

Similar to Django's built-in PermissionRequiredMixin, but extended to check for both model-level and object-level permission assignments. If the user has only object-level permissions assigned, the view's queryset is filtered to return only those objects on which the user is permitted to perform the specified action.

An optional iterable of statically declared permissions to evaluate in addition to those

derived from the object type

get_required_permission()

Return the specific permission necessary to perform the requested action on an object.

nautobot.apps.views.ObjectView

Bases: ObjectPermissionRequiredMixin, View

Retrieve a single object for display.

queryset: The base queryset for retrieving the object template_name: Name of the template to use

get(request, *args, **kwargs)

Generic GET handler for accessing an object.

get_extra_context(request, instance)

Return any additional context data for the template.

Parameters:

Name	Type	Description	Default
request	Request	The current request	required
instance	Model	The object being viewed	required

Returns:

Type	Description
dict	Additional context data

get_template_name()

Return self.template_name if set. Otherwise, resolve the template path by model app_label and name.

nautobot.apps.views.check_and_call_git_repository_function(request, pk, func)

Helper for checking Git permissions and worker availability, then calling provided function if all is well Args: request (HttpRequest): request object. pk (UUID): GitRepository pk value. func (function): Enqueue git repo function. Returns: (Union[HttpResponseForbidden,redirect]): HttpResponseForbidden if user does not have permission to run the job, otherwise redirect to the job result page.

nautobot.apps.views.check_filter_for_display(filters, field_name, values)

Return any additional context data for the template.

Parameters:

Name	Type	Description	Default
filters	OrderedDict	The output of .get_filters() of a desired FilterSet	required
field_name	str	The name of the filter to get a label for and lookup values	required
values	list[str]	List of strings that may be PKs to look up	required

Returns:

Type	Description
dict	A dict containing: - name: (str) Field name - display: (str) Resolved field name, whether that's a field label or fallback to inputted field_name if label unavailable - values: (list) List of dictionaries with the same name and display keys

nautobot.apps.views.csv_format(data)

Convert the given list of data to a CSV row string.

Encapsulate any data which contains a comma within double quotes.

Obsolete, as CSV rendering in Nautobot core is now handled by nautobot.core.api.renderers.NautobotCSVRenderer.

nautobot.apps.views.get_csv_form_fields_from_serializer_class(serializer_class)

From the given serializer class, build a list of field dicts suitable for rendering in the CSV import form.

nautobot.apps.views.get_paginate_count(request)

Determine the length of a page, using the following in order:

1. per_page URL query parameter
2. Saved user preference
3. PAGINATE_COUNT global setting.

nautobot.apps.views.handle_protectederror(obj_list, request, e)

Generate a user-friendly error message in response to a ProtectedError exception.

nautobot.apps.views.prepare_cloned_fields(instance)

Compile an object's clone_fields list into a string of URL query parameters. Tags are automatically cloned where applicable.