Notes and ChangeLog tabs using wrong model templates

[Kircheneer]

Environment

• Nautobot version (Docker tag too if applicable): 1.4.1
• Python version: 3.10.4
• Database platform, version: Docker image postgres:13-alpine
• Middleware(s): -

Steps to Reproduce

1. Create a model in a plugin
2. Call the basic retrieve template for it $(MODELNAME)_retrieve (as I assume is best practice due to NautobotUIViewSet using this)
3. Create an instance of that model
4. Navigate to the Notes or Changelog tab of that model

Expected Behavior

The tab displays correctly including the rendering of the other tabs.

Observed Behavior

Only the tab content renders, not the other tabs.

Potential fix

Notes

A potential fix for the Notes issue could be here:

-       # Default to using "<app>/<model>.html" as the template, if it exists. Otherwise,
+       # Default to using "<app>/<model>_retrieve.html" as the template, if it exists. Otherwise,
        # fall back to using base.html.
        if self.base_template is None:
-           self.base_template = f"{model._meta.app_label}/{model._meta.model_name}.html"
+           self.base_template = f"{model._meta.app_label}/{model._meta.model_name}_retrieve.html"
            # TODO: This can be removed once an object view has been established for every model.
            try:
                template.loader.get_template(self.base_template)
            except template.TemplateDoesNotExist:
                self.base_template = "base.html"

Changelog

A potential fix for the Changelog issue could be here:

-       # Default to using "<app>/<model>.html" as the template, if it exists. Otherwise,
+       # Default to using "<app>/<model>_retrieve.html" as the template, if it exists. Otherwise,
        # fall back to using base.html.
        if self.base_template is None:
-           self.base_template = f"{model._meta.app_label}/{model._meta.model_name}.html"
+           self.base_template = f"{model._meta.app_label}/{model._meta.model_name}_retrieve.html"
            # TODO: This can be removed once an object view has been established for every model.
            try:
                template.loader.get_template(self.base_template)
            except template.TemplateDoesNotExist:
                self.base_template = "base.html"

[glennmatthews]

We probably need logic to look for both filenames, as any existing views and plugins not using NautobotUIViewSet are likely still using the older <app_label>/<model_name>.html format still.