From 243ac1feb4feccfd9858c670a8db75d97db33ca0 Mon Sep 17 00:00:00 2001
From: danmarsden <danmarsden>
Date: Thu, 3 May 2007 00:04:53 +0000
Subject: [PATCH] MDL-8394  Allow students to remove their choice when they are
 allowed to update their choice.

---
 mod/choice/lib.php  | 5 +++++
 mod/choice/view.php | 6 ++++++
 2 files changed, 11 insertions(+)

diff --git a/mod/choice/lib.php b/mod/choice/lib.php
index abb885f83e9..b0217f4493b 100644
--- a/mod/choice/lib.php
+++ b/mod/choice/lib.php
@@ -224,6 +224,11 @@ function choice_show_form($choice, $user, $cm) {
     echo "<input type=\"hidden\" name=\"id\" value=\"$cm->id\" />";
     if (!isguest()) { //don't show save button if the logged in user is the guest user.
         echo "<input type=\"submit\" value=\"".get_string("savemychoice","choice")."\" />";
+        
+        if ($choice->allowupdate && $aaa = get_record('choice_answers', 'choiceid', $choice->id, 'userid', $user->id)) {
+            echo "<br /><a href='view.php?id=".$cm->id."&action=delchoice'>".get_string("removemychoice","choice")."</a>";
+        }
+        
     } else {
         print_string('havetologin', 'choice');
     }
diff --git a/mod/choice/view.php b/mod/choice/view.php
index f047d52f6db..ba734978b93 100644
--- a/mod/choice/view.php
+++ b/mod/choice/view.php
@@ -28,6 +28,12 @@
         print_error('badcontext');
     }
 
+if ($action == 'delchoice') {
+    if ($answer = get_record('choice_answers', 'choiceid', $choice->id, 'userid', $USER->id)) {
+        //print_object($answer);
+        delete_records('choice_answers', 'id', $answer->id);
+    }
+}
 
 /// Submit any new data if there is any