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✨ Set up Copilot instructions

#167

· happylittle7 opened

on Dec 28, 2025

The Problems model defines `course_id` as a ForeignKey with `null=False, blank=False` (line 84 in problems/models.py), meaning every problem must be associated with a course. However, the permission check on lines 37-38 checks if `problem.course_id` is falsy and returns an error message "此題目未關聯到任何課程". This check is redundant since the database constraint ensures a course_id must always exist. This condition will never be True in practice.

#157

· happylittle7 opened

on Dec 27, 2025