constructing a url

rob1308

Hi all,

I have a gallery which when it brings up the individual photo's they are brought up with the url and the image ID number as it is stored in the mySQL database an example of the url at the top of the page for an image is

http://www.exetickets.com/eTicket/index.php?view=Image&id=166

what code must I use to just either add 1 (+1) to the image id or subtract 1 (-1) so that i can add this code to buttons so that users can navigate to the next and previous images?

Thank you in advance for your kind help.
Thanks,
Rob.

shaneH

if (isset($_GET['id])) {$id = ($_GET['id'] + 1 );}

And your link or form buttton would have a url like

'http://www.exetickets.com/eTicket/index.php?view=Image&id=<?=$id?>'

rob1308

Right, I have tried implementing the above code but seem to be having no joy, can someone please point me in the right direction? Below is the code for the whole page. It is a tpl file, does that make any difference?

<div align="center">
<table class="form" cellspacing="0">
<tbody>
<tr>
<td colspan="2" align="center" bgcolor="#555555"><b>Event</br></td>
</tr>
<tr>
<td class="fieldName" width="50%">Date:</td>
<td width="50%">
<a href=""></a></td>
</tr>
<tr>
<td class="fieldName">Name:</td>
<td><a href=""></a></td>
</tr>
<tr>
<td class="fieldName">Description:</td>
<td></td>
</tr>
<tr>
<td class="fieldName">Venue:</td>
<td></td>
</tr>

<tr>
<td class="fieldName">Dress Code:</td>
<td></td>
</tr>

<tr>
<td colspan="2" align="center" bgcolor="#555555"><b>Image</br></td>
</tr>
<tr>
<td class="fieldName" width="50%">Date added:</td>
<td width="50%"></td>
</tr>
<tr>
<td class="fieldName" width="50%">Title:</td>
<td width="50%"></td>
</tr>
<tr>
<td class="fieldName" width="50%">Hits:</td>
<td width="50%"></td>
</tr>

		<tr>
                <td colspan="2" align="center" bgcolor="#555555">Purchased prints are of higher quality and without the watermarks seen here.</td>
            </tr>	




		<tr>
                <td colspan="2"  align="center"> <!--{img_image _object=$object _type="big"}--></td>
            </tr>
          	<tr>
                <td colspan="2" align="center" bgcolor="#555555"><b>Prints</br></td>
            </tr>
            <tr>
                <td colspan="2" align="center">
                <!--{if $__currentUser->id}-->
                <table cellpadding="0" cellspacing="10">
                <tr>
		        <!--{foreach from=$printSizes item=item}-->
		        <td align="center">
		        	<b><!--{$item->title}--></b><br>Price: <!--{$item->price}--><br>
		        	<form target="paypal" action="<!--{$payment.paypal_address}-->" method="post">

<input type="submit" class="but" VALUE="Add to Basket">
<input type="hidden" name="add" value="1">
<input type="hidden" name="cmd" value="cart">
<input type="hidden" name="business" value="">
<input type="hidden" name="item_name" value="()">
<input type="hidden" name="item_number" value="print">
<input type="hidden" name="amount" value="">
<input type="hidden" name="no_note" value="1">

</form>
</td>

<td>No Prints available</td>

</tr>
</table>

You need to <a href="">login</a> to buy prints

</td>
</tr>

          </tbody>
    </table>

</div>
[/code]

shaneH

I am suprised no one answered you since my answer yesterday.

As a habbit you should just use the ".php" file extention on all your files if you are using PHP at all on your site (except for CSS and JavaScript files, obviously). This way your server knows that there is PHP code that it must parse before sending it to the user.

As a side note some hosting companies allow you to modify how each file extention is handled so you may be able to setup your hosting to parse PHP in a .tpl file. But I have never really seen a need to make such a change as just using a .php file extention instead solves the problem.

And may I ask what is this

<!--{some value or code}-->

I was thinking maybe it was a different way of doing XML or Javascript but I don't think so. I am fairly certain it's not CGI or ASP, as you would not be using PHP. It looks a lot like PHP but I have never seen code done like that before.

bpat1434

This:

<tr>
<td colspan="2" align="center" bgcolor="#555555">Purchased prints are of higher quality and without the watermarks seen here.</td>
</tr>
<tr>
<td colspan="2" align="center"> <!--{img_image _object=$object _type="big"}--></td>
</tr>
<tr>
<td colspan="2" align="center" bgcolor="#555555"><b>Prints</br></td>
</tr>

Becomes:

<tr>
<td colspan="2" align="center" bgcolor="#555555">Purchased prints are of higher quality and without the watermarks seen here.</td>
</tr>

<tr>
    <td align="center"><a href="<!--{url _name="Image" id=$image->id-1}-->">Previous</a></td>
    <td align="center"><a href="<!--{url _name="Image" id=$image->id+1}-->"><!--{$event->name}--></a></td>
</tr>

<tr>
<td colspan="2" align="center"> <!--{img_image _object=$object _type="big"}--></td>
</tr>

<tr>
    <td align="center"><a href="<!--{url _name="Image" id=$image->id-1}-->">Previous</a></td>
    <td align="center"><a href="<!--{url _name="Image" id=$image->id+1}-->"><!--{$event->name}--></a></td>
</tr>

<tr>
<td colspan="2" align="center" bgcolor="#555555"><b>Prints</br></td>
</tr>

Now, it's a guess as to the exact code, but if you compare my additions to the code in the section that deals with displaying the gallery. But something like that should work.

Of course, you'd have to use if and else clauses to catch for the first and last pictures in the gallery... you could be in for a lot of work. If you didn't code it yourself, I'd ask around on the developers forums if someone more experienced in their code can help you as we here would only be taking guesses....

@:
The template syntax is that of a custom template parsing script. It's similar to that of phpBB which "embeds" php inside of plain-text templates. Using the comment structure they can change "" to "?>" and [man]eval/man the code.

Was I of any help at all, or did I confuse you even more?

shaneH

:bemused: Duh, It's so obvious, I knew that, just had forgot about them. I haven't used any in a long time as I have gotten in the habbit of making what I need.

rob1308

bpat1434 and ShaneH

Thanks for all you efforts i will try it out now. I'll let you know!
Thanks again
Rob.

rob1308

Right,
Brett, I have tried the code and for example if i am on page

http://www.exetickets.com/eTicket/index.php?view=Image&id=280

using the links you provided just gives me the url link with target

http://www.exetickets.com/eTicket/index.php?view=Image&id=-1
or
http://www.exetickets.com/eTicket/index.php?view=Image&id=+1

I need it to become either
http://www.exetickets.com/eTicket/index.php?view=Image&id=279
or
http://www.exetickets.com/eTicket/index.php?view=Image&id=281

How can i make this work?!
I am a noob and I am trying to learn but the big and expensive book I bought "PHP and MySQL for dynamic websites Second Edition by Larry Ullman doesn't prove to specific with these issues! I love learning whilst doing especially when there are pro's like yourself willing to teach?!
Thanks again for everything,
Rob.

bpat1434

is this a home-made script? No? Then I'd say you go ask the forums of the original developer. Seems to me that you get image ID from the URL, and then increment/decrement it by 1.

I cant' say with any degreee of certainty what will and what won't work. You can always try:

<tr>
    <td align="center"><a href="<!--{url _name="Image" id=$_GET['id']-1}-->">Previous</a></td>
    <td align="center"><a href="<!--{url _name="Image" id=$_GET['id']+1}-->">Next</a></td>
</tr>

rob1308

Hi brett, i can call the current image id by using  and now I essentially need to +1 or -1 to that and then assign the new value to the end of the url
http://www.exetickets.com/eTicket/index.php?view=Image&id=

Surely this can't be so hard?!
Thanks,
Rob.

bpat1434

Without seeing the source I can only guess....So maybe something like:

But I can't be sure unless I see the full source...