Please.....Pagination

junemo · July 1st, 2004, 08:52 PM

Hi, I want craete a page that can list of record in html format. Let say the query may result in hundreds or thousands of records. Then, I need create button PREV and NEXT.

1. Isn't I need to create a procedure and run at SQL* Plus, i.e.

create or replace procedure paginate( p_start in number default 1)
as
l_next boolean default false;
l_pagesize number default 50;
begin
htp.bold( 'p_start =' || P_start);
htp.p('<table>');
for x in (select *
from (select a.*, rownum r from bill a
where rownum <= p_start+l_pagesize) a
where r >= p_start)
loop
l_next :=( x.r = p_start=l_pagesize);
htp.p( '<tr><td>' || x.r || '</td><td>' ||
x.invno || '</td></tr>');
end loop;
htp.p( '</table>');

if( p_start >1)
then
htp.formOpen( 'paginate');
htp.formHidden( 'p_start', p_start-l_pagesize);
htp.formSubmit( cvalue => 'prev' || (p_start-l_pagesize));
htp.formClose;
end if;
if(l_next)
then
htp.formOpen( 'paginate');
htp.formHidden( 'p_start', (p_start+l_pagesize));
htp.formSubmit( cvalue => 'next' || (p_start+l_pagesize));
htp.formClose;
end if;
end;
/

Are this code write in correctly? Do have duplicate record?

2. After I have create a procedure, how I want apply this in my application code(PHP)?
i.e.
<html>
.....
<?php
require_once("DB.php");
$connection = OCILogon("prod", "prod");
$stmt = OCIParse($connection, "SELECT * FROM ( SELECT a.*, rownum rnum
                                                    FROM (SELECT invno FROM bill ORDER BY invno) a
                                                    WHERE rownum < 50)
                                                    WHERE rnum >= 1 ");
OCIExecute($stmt);
$rownum = OCIFetchStatement( $stmt, $results);
//display all entries
for ( $i=0; $i<$rownum; $i++ )
{
echo " <td class=text8Arial11> " .$results["INVNO"][$i]."</td>";
echo "</tr>";
}
OCILogOff($connection);
?>
.....
</html>

3. Should I need create a button PREV and NEXT links in <html> tag?i.e.
<a href="javascript:doSubmit_prev();">Previous 50 Records</a>
<a href="javasrcipt:doSubmit_next();">Next 50 Records</a>

Then, where should I POST this form method each time I click the button NEXT / PREV?

4. If this more complicate way, are there have other more easier and understanding solution way to solve it?

Please...
Thanks in advance.

Oracle 8.1.7
PHP 4.3.4
Apache / IIS webserver
Win2000

dkittell · September 25th, 2004, 01:04 PM

A code to try:

Code:

<table cellpadding="2" cellspacing="0" width="100%" border="1" bordercolor="#333333">
<tr><td>
<table cellpadding="2" cellspacing="0" width="100%" border="0" bordercolor="#333333">
<tr>
<td width="10" class="tablebottomsb"><strong>Date</strong></td>
<td class="tablebottomsb"><strong>Title</strong></td>
<td class="tablebottomsb">&nbsp;</td></tr>
<?php

  // Get the search variable from URL

  $var = @$_GET['q'] ;
  $trimmed = trim($var); //trim whitespace from the stored variable

// rows to return
$limit=10; 

//connect to your database ** EDIT REQUIRED HERE **
mysql_connect("localhost", "dbuser", "dbpass"); //(host, username, password)

//specify database ** EDIT REQUIRED HERE **
mysql_select_db("dbname") or die("Unable to select database");
//select which database we're using

// Build SQL Query  
$query = "select * from bulletin WHERE bulletin_flags=0 order by bulletin_date DESC";
// EDIT HERE and specify your table and field names for the SQL query

 $numresults=mysql_query($query);
 $numrows=mysql_num_rows($numresults);

// If we have no results, offer a google search as an alternative

if ($numrows == 0)
  {
  echo "<p>Sorry, we currently don't have information here.</p>";

// google
 echo "<p><a href=\"http://www.google.com/search?q=" 
  . $trimmed . "\" target=\"_blank\" title=\"Look up 
  " . $trimmed . " on Google\">Click here</a> to try the 
  search on google</p>";
  }

// next determine if s has been passed to script, if not use 0
  if (empty($s)) {
  $s=0;
  }

// get results
  $query .= " limit $s,$limit";
  $result = mysql_query($query) or die("Couldn't execute query");

// begin to show results set
//echo "Results";
$count = 1 + $s ;

// now you can display the results returned
  while ($row= mysql_fetch_array($result)) {

  $currentDate = $row["bulletin_date"];
  if ($currentDate != $lastDate)
  {
    if ($cellBgColor=="#FFFFFF")
    {
        $cellBgColor = "#CCCCCC";
    }
    else
    {
        $cellBgColor = "#FFFFFF";
    }
  }
  $date = $row['bulletin_date'];
  $series = $row['bulletin_series'];
  $title = $row['bulletin_title'];

    echo "<tr bgcolor=" . $cellBgColor . "><td>" . strftime("%m/%d/%Y",strtotime($date)) . 
    "</td><td>" . $series . $title . "</td><td><a href='bulletin/" . $row['bulletin_id_k'] .
    ".pdf' target=newwindow><img src=images/view.gif border='0' height='14' width='14'
align='absmiddle' alt='View this Bulletin.'></a></td></tr>" ;
  $count++ ;
  $lastDate = $currentDate;
  }

$currPage = (($s/$limit) + 1);

//break before paging
  echo "</table><br />";

  // next we need to do the links to other results
  if ($s>=1) { // bypass PREV link if s is 0
  $prevs=($s-$limit);
  print "&nbsp;<a href=\"$PHP_SELF?s=$prevs&q=$var\">&lt;&lt; 
  Prev 10</a>&nbsp&nbsp;";
  }

// calculate number of pages needing links
  $pages=intval($numrows/$limit);

// $pages now contains int of pages needed unless there is a remainder from division

  if ($numrows%$limit) {
  // has remainder so add one page
  $pages++;
  }

// check to see if last page
  if (!((($s+$limit)/$limit)==$pages) && $pages!=1) {

  // not last page so give NEXT link
  $news=$s+$limit;

  echo "&nbsp;<a href=\"$PHP_SELF?s=$news&q=$var\">Next 10 &gt;&gt;</a>";
  }

$a = $s + ($limit) ;
  if ($a > $numrows) { $a = $numrows ; }
  $b = $s + 1 ;
  //echo "<p>Showing results $b to $a of $numrows</p>";

?>
</td></tr></table></td></tr></table></td></tr></table>

You can view an example of this code at http://muthbible.com/bulletin.php

I want to make a point that I didn't create this code, I found it on the web, but this is working on a few of my sites flawlessly.

---
David Kittell

dkittell · September 25th, 2004, 01:14 PM

I believe pasted too many closing tags in there, but it should help you.

---
David Kittell