From 0bf58fc2829d7fed6256b4b1e874b91c69db8e5f Mon Sep 17 00:00:00 2001
From: Lan Hui <lanhui@zjnu.edu.cn>
Date: Tue, 22 Aug 2023 19:51:02 +0800
Subject: [PATCH] Course.php: give the code better format; show None if there
 is no attachment.

---
 Course.php | 64 +++++++++++++++++++++++++++---------------------------
 1 file changed, 32 insertions(+), 32 deletions(-)

diff --git a/Course.php b/Course.php
index e015043..c63fb41 100644
--- a/Course.php
+++ b/Course.php
@@ -182,50 +182,50 @@ include 'Header.php';
 		    <div id="menu2" class="tab-pane">
 
 			<?php
-			$group_id=$_SESSION['group_id'];
-			if($group_id == ""){$group_id = -1;} // Individual assignment does not require the student to have a group id.  Therefore, the group is an empty string. To make the following SQL statement work properly, initialize the group id to -1.
-			$result  = mysqli_query($con,"SELECT Lab_Report_ID,Marks, `Course_ID`, `Posted_Date`, `Deadline`, `Instructions`, lab_reports_table.Title, `Attachment_link_1`, `Attachment_link_2`, `Attachment_link_3`, `Attachment_link_4`
-          FROM `lab_reports_table`
-          WHERE
-Lab_Report_ID not in (select Lab_Report_ID from lab_report_submissions where (Student_id=$student_id or Course_Group_id=$group_id)) and Course_ID=$course_id and Deadline < '$c_date'"
-						   . ""
-						   . ""
-						   . ""
-						   . ""
-						   . ""
-						   . ""
-						   . "ORDER by Lab_Report_ID DESC");
+			$group_id = $_SESSION['group_id'];
 
-			if(mysqli_num_rows($result)==0)
+			if ($group_id == "") { // Individual assignment does not require the student to have a group id.  Therefore, the group is an empty string. To make the following SQL statement work properly, initialize the group id to -1.
+			    $group_id = -1;
+			}
+
+			$result  = mysqli_query($con,"SELECT Lab_Report_ID, Marks, `Course_ID`, `Posted_Date`, `Deadline`, `Instructions`, lab_reports_table.Title, `Attachment_link_1`, `Attachment_link_2`, `Attachment_link_3`, `Attachment_link_4` FROM `lab_reports_table` WHERE Lab_Report_ID not in (select Lab_Report_ID from lab_report_submissions where (Student_id=$student_id or Course_Group_id=$group_id)) and Course_ID=$course_id and Deadline < '$c_date' ORDER by Lab_Report_ID DESC");
+
+			if(mysqli_num_rows($result) == 0)
 			{
 			    echo '<div class="alert alert-info">You missed no lab reports.</div>';
 
 			} else {
 			    while($row = mysqli_fetch_assoc($result)) {
-				$title=$row['Title'];
-				$marks=$row['Marks'];
-				$ins=$row['Instructions'];
-				$posted=$row['Posted_Date'];
-				$deadline=$row['Deadline'];
-				$att1=$row['Attachment_link_1'];
-				$att2=$row['Attachment_link_2'];
-				$att3=$row['Attachment_link_3'];
-				$att4=$row['Attachment_link_4'];
-				$id=$row['Lab_Report_ID'];
+				$title = $row['Title'];
+				$marks = $row['Marks'];
+				$ins = $row['Instructions'];
+				$posted = $row['Posted_Date'];
+				$deadline = $row['Deadline'];
+				$att1 = $row['Attachment_link_1'];
+				$att2 = $row['Attachment_link_2'];
+				$att3 = $row['Attachment_link_3'];
+				$att4 = $row['Attachment_link_4'];
+				$id = $row['Lab_Report_ID'];
 
-				$full_link="<a href='~\..\Lab_Report_Assignments\\$att1'>$att1</a>";
+				$full_link = "None";
 
-				if($att2!=""){
-				    $full_link= $full_link."| <a href='~\..\Lab_Report_Assignments\\$att2'>$att2</a>";
-				}
-				if($att3!=""){
-				    $full_link= $full_link."| <a href='~\..\Lab_Report_Assignments\\$att3'>$att3</a>";
+				if ($att1 != "") {
+				    $full_link = "<a href='~\..\Lab_Report_Assignments\\$att1'>$att1</a>";
 				}
 
-				if($att4!=""){
-				    $full_link= $full_link."| <a href='~\..\Lab_Report_Assignments\\$att4'>$att4</a>";
+				if($att2 != "") {
+				    $full_link = $full_link."| <a href='~\..\Lab_Report_Assignments\\$att2'>$att2</a>";
 				}
 
+				if($att3 != "") {
+				    $full_link = $full_link."| <a href='~\..\Lab_Report_Assignments\\$att3'>$att3</a>";
+				}
+
+				if($att4 != "") {
+				    $full_link = $full_link."| <a href='~\..\Lab_Report_Assignments\\$att4'>$att4</a>";
+				}
+
+
 				echo "<div class='card mt-md-2' style='word-wrap: break-word;'> <div class='card-body'> <span class='btn btn-sm btn-outline-danger'>MISSED</span> <h5 class='card-title'>$title</h5> <h6 class='card-subtitle'>($marks Marks)</h6> <br/> <p class='card-text'> $ins</p>
    <br> <p class='card-text'> <small> Posted: $posted &nbsp;&nbsp;&nbsp; Deadline: $deadline  &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br> Attachments: $full_link </small></p>
 </div></div><br>";