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Posted by strawberry on 06/09/06 11:05
Thanks,
But I'm going to have to have a bit of a think about that. I may be
some time...
I'll let you know when I've figured it out.
Cheers :-)
ZeldorBlat wrote:
> strawberry wrote:
> > Curiously, the last movie (movie_id 7) now always appears at the bottom
> > of the ranked list. Have I done something wrong or is my computer just
> > exercising some form of editorial control - after all, it is a Nicholas
> > Cage movie!?!
> >
> > The rank order processing function looks like this:
> >
> > function processMoviesOrder($key)
> > {
> > if (!isset($_POST[$key]) || !is_array($_POST[$key]))
> > return;
> >
> > $movies = getMovies();
> > $queries = array();
> > $ranking = 1;
> >
> > foreach ($_POST[$key] as $movie_id) {
> > if (!array_key_exists($movie_id, $movies))
> > continue;
> >
> > $query = sprintf('update movies set ranking = %d where movie_id =
> > %d',
> > $ranking,
> > $movie_id);
> >
> > mysql_query($query);
> > $ranking++;
> > }
> >
> > and the complete presentation page now looks like this;
> >
> > <?php
> > require_once('database.php');
> > require_once('movies.php');
> >
> > if (!dbConnect()) {
> > echo 'Error connecting to database';
> > exit;
> > }
> >
> > $movies = getMovies();
> > ?>
> > <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
> > "DTD/xhtml1-strict.dtd">
> > <html>
> > <head>
> > <title>phpRiot Sortable Lists</title>
> > <link rel="stylesheet" type="text/css" href="styles.css" />
> >
> > <script type="text/javascript"
> > src="../javascripts/prototype.js"></script>
> > <script type="text/javascript"
> > src="../javascripts/scriptaculous.js"></script>
> > </head>
> > <body>
> > <h1>phpRiot Sortable Lists</h1>
> >
> > <ul id="movies_list" class="sortable-list">
> > <?php
> >
> > foreach($movies as $movie) {
> > //$movie->movie_id is the movie_id
> > //$movie->title is the title
> > //$movie->description is the description
> > ?>
> > <li id="movie_<?= $movie->movie_id ?>"><?=
> > $movie->title.$movie->description ?></li>
> > <?php } ?>
> > </ul>
> >
> > <script type="text/javascript">
> > function updateOrder()
> > {
> > var options = {
> > method : 'post',
> > parameters :
> > Sortable.serialize('movies_list')
> > };
> >
> > new Ajax.Request('processor.php', options);
> > }
> >
> > Sortable.create('movies_list', { onUpdate : updateOrder });
> > </script>
> > </body>
> > </html>
> >
> > the javascripts referred to come from the scriptaculous website
> >
> > strawberry wrote:
> > > Perfect. Thank you very much.
> > >
> > > ZeldorBlat wrote:
> > > > strawberry wrote:
> > > > > I'm trying to extend the script(s) provided at
> > > > > www.phpriot.com/d/articles/client-side/sortable-lists-with-php-and-ajax/.
> > > > > I'm struggling with the foreach syntax - I guess I'm just a dummy. I
> > > > > still don't get it despite reading through http://uk.php.net/foreach.
> > > > >
> > > > > Basically, there's a movie table (`movie_id`, `title`, `description`,
> > > > > `ranking`).
> > > > >
> > > > > and a function that gets the movies:
> > > > >
> > > > > function getMovies()
> > > > > {
> > > > > $query = 'select movie_id, title, description from movies order
> > > > > by ranking, lower(title)';
> > > > > $result = mysql_query($query);
> > > > >
> > > > > $movies = array();
> > > > > while ($row = mysql_fetch_object($result)) {
> > > > > $movies[$row->movie_id] = $row->title;
> > > > > }
> > > > >
> > > > > return $movies;
> > > > > }
> > > > >
> > > > >
> > > > > and here's where the titles are displayed on the page:
> > > > >
> > > > > <ul id="movies_list" class="sortable-list">
> > > > > <?php foreach ($movies as $movie_id => $title) { ?>
> > > > > <li id="movie_<?= $movie_id ?>"><?= $title ?></li>
> > > > > <?php } ?>
> > > > > </ul>
> > > > >
> > > > > For each movie what do I need to do to echo the movie description -
> > > > > within the <li> statement for instance.
> > > > >
> > > > > Hope that makes sense. Any help appreciated.
> > > >
> > > > In the getMovies() function, change the while loop to something like
> > > > this:
> > > >
> > > > while ($row = mysql_fetch_object($result)) {
> > > > $movies[] = $row;
> > > > }
> > > >
> > > > And when you display them:
> > > >
> > > > foreach($movies as $movie) {
> > > > //$movie->movie_id is the movie_id
> > > > //$movie->title is the title
> > > > //$movie->description is the description
> > > > }
>
> Look at your new version of getMovies() and consider what the keys of
> the array are.
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