fixing the book available logic

Author: theprogrammerin

all.php

@@ -5,11 +5,11 @@
 <table width="853" border="0" cellspacing="1" style="  margin-left:15px;background:#F90;font-size:12px; font-family:Verdana, Geneva, sans-serif;">
 <?php
 	include('database/config.php');
-$q="select b.book_id, title, author_name, branch_name, no_of_copies, no_issued, (no_issued + no_of_copies) AS no_total from book b
+$q="select b.book_id, title, author_name, branch_name, no_of_copies, IFNULL(no_issued, 0) AS no_issued, (no_of_copies- IFNULL(no_issued, 0)) AS no_available from book b
 join book_authors ba on b.book_id  = ba.book_id
 join book_copies bc on b.book_id=bc.book_id
 join library_branch lc on bc.branch_id = lc.branch_id
-join (SELECT  book_id, count(*) AS no_issued FROM book_loans GROUP BY book_id) book_issues ON book_issues.book_id = b.book_id
+LEFT join (SELECT book_id, branch_id, count(*) AS no_issued FROM book_loans WHERE date_in = '0000-00-00' GROUP BY book_id, branch_id) book_issues ON book_issues.book_id = b.book_id AND lc.branch_id = book_issues.branch_id
 order by b.book_id;
 ";
 $rs=mysql_query($q);
@@ -27,10 +27,10 @@
     <td width="120"><?php echo $row['author_name']; ?></td>
     <td width="120"><?php echo $row['branch_name']; ?></td>
     <td width="50" >
-	<input readonly="readonly" type="text" style="background:#FFF;padding:2px; width:20px;" value="<?php echo $row['no_total'];;
+	<input readonly="readonly" type="text" style="background:#FFF;padding:2px; width:20px;" value="<?php echo $row['no_of_copies'];;
  ?>"/></td>
  <td width="50" >
-	<input readonly="readonly" type="text" style="background:#FFF;padding:2px; width:20px;" value="<?php echo $row['no_of_copies'];;
+	<input readonly="readonly" type="text" style="background:#FFF;padding:2px; width:20px;" value="<?php echo $row['no_available'];;
  ?>"/></td>
    <td class="view">
 <a href="?addBooks&book_id=<?php echo $row['book_id'] ?>&view">View</a></td>

borrowBooks.php

@@ -452,33 +452,14 @@ function timing()
 	$rs_update=mysql_query($sql);
 	if($rs_update){
 
-
-$upd="select * from book_copies where book_id='".$_GET['accNo']."'";
-		$obj = mysql_query($upd);
-$cop=mysql_fetch_array($obj);
-
-if(isset($_GET['accNo'])){
-
-		$get=$cop['no_of_copies']-1;
-}else{
-
-$get=$copy-1;
-}
-
-$update="update book_copies set no_of_copies='$get' where book_id='$accNo'";
-		$objExec = mysql_query($update);
-if($objExec){
-		 ?>
-
+?>
 		<script>
 $(document).ready(function(){
     $("#success").fadeIn(1000);
 });
 </script>
 <?php
 	//echo "Your Borrow has been Registered";
-	}
-
 
 	}
 	}

returnbookpopup.php

@@ -395,7 +395,6 @@ function printDiv(divID) {
 $query12 = "select * from book where book_id=$name[book_id]";
 $s=mysql_query($query12);
 $boks=mysql_fetch_array($s);
-$add=$boks['bookcopies']+1;
 ?>
 <?php
 
@@ -481,16 +480,14 @@ function printDiv(divID) {
 
 	$update2="update tblborrow set datereturn='$re',item='0', status='Signed' where borrowid='$id'";
 	$objExec2 = mysql_query($update2)or die(mysql_error());
-if($objExec2){
-		$up2="update books set bookcopies='$add' where accNo='".$boks['accNo']."'";
-	mysql_query($up2)or die(mysql_error());?>
+
+	?>
 <script>
 $(document).ready(function(){
     $("#div2").fadeIn(1000);
 });
 </script>
 	<?php
-	}
 }
 }
 ?>

search.php

@@ -13,11 +13,11 @@
 
 $q=$_POST['searchword'];
 
-$sql_res="select b.book_id, title, author_name, branch_name, no_of_copies from book b
+$sql_res="select b.book_id, title, author_name, branch_name, no_of_copies, IFNULL(no_issued, 0) AS no_issued, (no_of_copies- IFNULL(no_issued, 0)) AS no_available from book b
 join book_authors ba on b.book_id  = ba.book_id
 join book_copies bc on b.book_id=bc.book_id
 join library_branch lc on bc.branch_id = lc.branch_id
-
+LEFT join (SELECT book_id, branch_id, count(*) AS no_issued FROM book_loans WHERE date_in = '0000-00-00' GROUP BY book_id, branch_id) book_issues ON book_issues.book_id = b.book_id AND lc.branch_id = book_issues.branch_id
 where b.book_id like '%$q%' or title like '%$q%' or author_name like '%$q%'
 order by b.book_id";
 
@@ -27,27 +27,30 @@
 $items = 0;
 ?>
 
-	
+
 <?php while($row=mysql_fetch_array($r))
 {
-	 $items++; 
+	 $items++;
 $bookid=$row['book_id'];
 $booktitle=$row['title'];
 $author=$row['author_name'];
 $branch=$row['branch_name'];
 $copies=$row['no_of_copies'];
+$available = $row['no_available'];
 
 $re_bookid='<b>'.$q.'</b>';
 $re_booktitle='<b>'.$q.'</b>';
 $rauthor='<b>'.$q.'</b>';
 $rbranch='<b>'.$q.'</b>';
 $rcopies='<b>'.$q.'</b>';
+$ravailable='<b>'.$q.'</b>';
 
 $f_bookid = str_ireplace($q, $re_bookid, $bookid);
 $fbooktitle = str_ireplace($q, $re_booktitle, $booktitle);
 $fauthor = str_ireplace($q, $rauthor, $author);
 $fbranch = str_ireplace($q, $rbranch, $branch);
 $fcopies = str_ireplace($q, $rcopies, $copies);
+$favailable = str_ireplace($q, $ravailable, $available);
 ?>
 
 
@@ -66,7 +69,7 @@
 	<input readonly="readonly" type="text" style="background:#FFF;padding:2px; width:50px;" value="<?php echo $fcopies;
  ?>"/></td>
  <td width="50" >
-	<input readonly="readonly" type="text" style="background:#FFF;padding:2px; width:50px;" value="<?php echo $fcopies;
+	<input readonly="readonly" type="text" style="background:#FFF;padding:2px; width:50px;" value="<?php echo $favailable;
  ?>"/></td>
 
 <td class="view" width="35">
@@ -77,8 +80,8 @@
 <td class="del">
 <?php echo '<div align="center"><a href="#" id="'.$row['book_id'].'" class="delbutton" >Delete</a></div>'; ?>
    </td>
- 
- 
+
+
 </tr>
 
 
@@ -98,7 +101,7 @@
 Search Not Found</div>
 
 <?php	}
- 
+
 }
 
 ?>
@@ -125,7 +128,7 @@
    url: "delete.php",
    data: info,
    success: function(){
-   
+
    }
  });
          $(this).parents(".hr").animate({ backgroundColor: "#fbc7c7" }, "fast")