Fix get_route_for_model for ContentTypes

[timizuoebideri1]

Closes: #3080

What's Changed

Running get_route_for_model(ConentType, api=True...) would yield content-types-api:contenttype-list rather than the newly created endpoint for contenttypes because ContentType is not a core model in nautobot (extras-api:contenttype-list)

TODO

• Explanation of Change(s)
• Added change log fragment(s) (for more information see the documentation)
• Attached Screenshots, Payload Example
• Unit, Integration Tests
• Documentation Updates (when adding/changing features)
• Example Plugin Updates (when adding/changing features)
• Outline Remaining Work, Constraints from Design

[bryanculver]

LGTM. Curious to know why we can't use the Django default for ContentType. Doesn't appear we do anything fancy with our ContentType view. Is their default not read-only?

[glennmatthews]

LGTM. Curious to know why we can't use the Django default for ContentType. Doesn't appear we do anything fancy with our ContentType view. Is their default not read-only?

There is no default REST API provided by the contenttypes app AFAIK. We provide one for the ContentType model through our extras app.

[glennmatthews]

1. Do we need a similar fix for the Group model and the users/groups/ REST URL?
2. Would you mind looking into how difficult it would be to fix Unable to query content_types via GraphQL #3300 in this same PR?

[bryanculver]

LGTM. Curious to know why we can't use the Django default for ContentType. Doesn't appear we do anything fancy with our ContentType view. Is their default not read-only?

There is no default REST API provided by the contenttypes app AFAIK. We provide one for the ContentType model through our extras app.

DOH. Didn't think beyond the get_route_for_model being our invention.

[timizuoebideri1]

• Do we need a similar fix for the Group model and the users/groups/ REST URL?
• Would you mind looking into how difficult it would be to fix Unable to query content_types via GraphQL #3300 in this same PR?

1. I suppose we'll need a similar fix for 'Group'.
2. I have little to no idea how GraphQL works, so it may take longer because I need to learn how it works first.

[glennmatthews]

• Would you mind looking into how difficult it would be to fix Unable to query content_types via GraphQL #3300 in this same PR?
  2. I have little to no idea how GraphQL works, so it may take longer because I need to learn how it works first.

No worries, that can be deferred since it's a separate issue. Thanks!

[glennmatthews]

Perhaps:

Suggested change

	Fix the issue with the ContentType reverse return, i.e get_route_for_model(ContentType, api=True...).
	Fixed missing `get_route_for_model()` logic for the `ContentType` and `Group` models.

[glennmatthews]

Hmm, I suppose for the api=False case we don't actually have viable routes for either of these models, do we? I guess it's inline with how get_route_for_model currently works that it just tries to guess the route name, but doesn't actually verify that it's valid though. Ah well.