Enrollment (and content) endpoints should not 404 when no enrollments (or content) can be found

[thomasplevy]

Mmm well no to me it meant that the enrollments did not exist, so it's my wrong understanding of the specs: BUG.
Maybe the spec could be more "complete" if they said what was the actual resource that couldn't be found.

I did the same with:

• membership enrollments
• course enrollments
• section content
• course content

they must be fixed then! Sorry!

Originally posted by @eri-trabiccolo in #178 (comment)

See related #178

The following endpoints must be updated to respond with a 200 (not a 404) when no enrollments (or content) are found:

• GET /memberships/{id}/enrollments

• GET /courses/{id}/enrollments

• GET /courses/{id}/content

• GET /sections/{id}/content

• The spec (for all endpoints) should be updated to note that the "resource" that is not found by the 404 is the course, membership, etc... and not the list enrollments

[eri-trabiccolo]

related, but maybe they worth another ticket:

• Student progress
  https://developer.lifterlms.com/rest-api/#tag/Student-Progress/paths/~1students~1{id}~1progress~1{post_id}/get

we never return a 404 here, we always return a validation error as the post_id was wrong:
https://github.com/gocodebox/lifterlms-rest/blob/1.0.0-beta.14/includes/server/class-llms-rest-students-progress-controller.php#L528

• Instructor content
  https://developer.lifterlms.com/rest-api/#tag/Instructors/paths/~1instructors~1{id}~1content/get
  the 404 case is missing in the spec, also I think that content spec is pretty wrong, I guess we want to display a collection there, right?

[eri-trabiccolo]

@thomasplevy
Can you help_with/validate the following too?
https://developer.lifterlms.com/rest-api/#tag/Student-Enrollments too

• https://developer.lifterlms.com/rest-api/#tag/Student-Enrollments/paths/~1students~1{id}~1enrollments/get 404 when the student doesn't exist
• https://developer.lifterlms.com/rest-api/#tag/Student-Enrollments/paths/~1students~1{id}~1enrollments~1{post_id}/get
  https://developer.lifterlms.com/rest-api/#tag/Student-Enrollments/paths/~1students~1{id}~1enrollments~1{post_id}/post
  404 when the student or the post/course don't exist
• https://developer.lifterlms.com/rest-api/#tag/Student-Enrollments/paths/~1students~1{id}~1enrollments~1{post_id}/patch
  404 when the student or the post/course or the enrollment itself don't exist

[thomasplevy]

@thomasplevy
Can you help_with/validate the following too?
https://developer.lifterlms.com/rest-api/#tag/Student-Enrollments too

• https://developer.lifterlms.com/rest-api/#tag/Student-Enrollments/paths/1students1{id}~1enrollments/get 404 when the student doesn't exist
• https://developer.lifterlms.com/rest-api/#tag/Student-Enrollments/paths/1students1{id}1enrollments1{post_id}/get
  https://developer.lifterlms.com/rest-api/#tag/Student-Enrollments/paths/1students1{id}1enrollments1{post_id}/post
  404 when the student or the post/course don't exist
• https://developer.lifterlms.com/rest-api/#tag/Student-Enrollments/paths/1students1{id}1enrollments1{post_id}/patch
  404 when the student or the post/course or the enrollment itself don't exist

You are correct on the way all of these should be working