Discssions as a plugin

openedx/core/constants.py

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+"""
+Constants that are relevant all of Open edX
+"""
+# These are standard regexes for pulling out info like course_ids, usage_ids, etc.
+# They are used so that URLs with deprecated-format strings still work.
+# Note: these intentionally greedily grab all chars up to the next slash includingny pluses
+# DHM: I really wanted to ensure the separators were the same (+ or /) but all patts tried had
+# too many inadvertent side effects :-(
+
+COURSE_KEY_PATTERN = r'(?P<course_key_string>[^/+]+(/|\+)[^/+]+(/|\+)[^/?]+)'
+COURSE_ID_PATTERN = COURSE_KEY_PATTERN.replace('course_key_string', 'course_id')
+COURSE_KEY_REGEX = COURSE_KEY_PATTERN.replace('P<course_key_string>', ':')