Differences

This shows you the differences between two versions of the page.

--- stats:proc:deleteexercise [2011/09/29 19:27] – Patrick Michel
+++ stats:proc:deleteexercise [2013/07/10 12:34] (current) – external edit 127.0.0.1
@@ Line 3: / Line 3: @@
 <code xcend>
 deleteExercise(ident uid, ident id) {
-  assume exists //accounts/account[uid]/admin;
+  assume exists /account[uid]/admin;
-  assume exists //exercises/exercise[id];
+  assume exists /exercise[id];
-  assume size(//accounts/account/assistant[id]) = 0;
+  assume size(/exercise[id]/assistant) = 0;
-  assume size(//accounts/account/tutor[id]) = 0;
+  assume size(/exercise[id]/group/tutor) = 0;
-  remove //exercises/exercise[id];
+  assume size(/exercise[id]/student) = 0; # don't allow to delete if students are there
+  remove /exercise[id];
 }
 </code>