comment on

The module Data::Page lacks a simple property that is useful when you need to build SQL queries with a LIMIT clause under MySql: how many records should you skip to reach the first record of current page? The answer is $self->first - 1 records. This isn't obvious to remember and not so clear at first sight when you read in a query, so I added a property that implements this functionality. A little example:

...
$pager = Data::Page::Extended->new($total_records,
                                   $page_size,
                                   $current_page);
$sth = $dbh->prepare(q{select * from table
                        where rec_date <= ?
                        order by rec_date
                        limit ?,?});
$sth->execute($date, $pager->skipped_items, $page_size);
...
[download]

Of course I sent a patch for this to acme.

Ciao, Valerio

package Data::Page::Extended;

use base 'Data::Page';

sub skipped_items
{
  my $self = shift;

  return $self->first - 1;
}

1;
[download]

In reply to A little extension for Data::Page by valdez

Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.


There's more than one way to do things
	PerlMonks