fixing delte logic

Author: theprogrammerin

all.php

@@ -37,7 +37,7 @@
 
    <td class="edit"><a  href="?addBooks&book_id=<?php echo $row['book_id']; ?>&branch_id=<?php echo $row['branch_id']; ?>">Edit</a></td>
    <td class="del">
-<?php echo '<div align="center"><a href="#" id="'.$row['book_id'].'" class="delbutton">Delete</a></div>'; ?>
+<?php echo '<div align="center"><a href="#" id="'.$row['book_id'].'-'.$row['branch_id'].'" class="delbutton" >Delete</a></div>'; ?>
 
    </td>
 

delete.php

@@ -1,73 +1,29 @@
 <?php
 include('config.php');
-if($_GET['accNo'])
-{
-$id=$_GET['accNo'];
 
-$update="UPDATE books set status='0' where accNo='$id'";
- //$sql = "DELETE FROM books WHERE accNo='$id'";
- mysql_query( $update);
-}
-
-?>
+$temp = explode("-", $_GET['book_id']);
+$book_id = $temp[0];
+$branch_id = $temp[1];
 
-<?php
 
-if($_GET['card_no'])
-{
-$id=$_GET['card_no'];
+$query = "DELETE FROM fines WHERE loan_id IN ( SELECT loan_id FROM book_loans WHERE book_id = $book_id AND branch_id = $branch_id)";
+mysql_query($query);
+$query = "DELETE FROM book_loans WHERE book_id = $book_id AND branch_id = $branch_id";
+mysql_query($query);
+$query = "DELETE FROM book_copies WHERE book_id = $book_id AND branch_id = $branch_id";
+mysql_query($query);
 
+$query = "SELECT * FROM book_copies WHERE book_id = $book_id AND branch_id = $branch_id";
+$result = mysql_query($query);
 
- $sql = "DELETE FROM borrower WHERE card_no='$id'";
- mysql_query( $sql);
+if(mysql_num_rows($result) == 0) {
+  $query = "
+    DELETE FROM book_authors WHERE book_id = $book_id;
+    DELETE FROM book WHERE book_id = $book_id;
+  ";
+  mysql_query($query);
 }
 
-?>
-
-<?php
-
-if($_GET['borrowid'])
-{
-$id=$_GET['borrowid'];
-
-
- $sql = "DELETE FROM tblborrow WHERE borrowid='$id'";
- mysql_query( $sql);
-}
-
-?>
-
-
-
-<?php
-
-
-
-
-if($_GET['resid'])
-{
-
-$sel="select * from tblbookreserve where resid='$_GET[resid]'";
-$as=mysql_query($sel);
-$a=mysql_fetch_array($as);
-
-$s="select * from books where accNo='".$a['accNo']."'";
-$ad=mysql_query($s);
-$ass=mysql_fetch_array($ad);
-
-
-$id=$_GET['resid'];
-
-
- $sql = "DELETE FROM  tblbookreserve WHERE resid='$id'";
- mysql_query( $sql);
-
-
-$num=$ass['bookcopies']+1;
-
-$update1="UPDATE books set bookcopies='$num' where accNo='".$a['accNo']."' ";
-
- mysql_query( $update1);
-}
+echo "Deleted";
 
 ?>

search.php

@@ -78,7 +78,7 @@
  <td class="edit" width="30"><a href="?addBooks&book_id=<?php echo $row['book_id']; ?>&branch_id=<?php echo $row['branch_id']; ?>">Edit</a></td>
 
 <td class="del">
-<?php echo '<div align="center"><a href="#" id="'.$row['book_id'].'" class="delbutton" >Delete</a></div>'; ?>
+<?php echo '<div align="center"><a href="#" id="'.$row['book_id'].'-'.$row['branch_id'].'" class="delbutton" >Delete</a></div>'; ?>
    </td>