| View previous topic :: View next topic |
| Author |
Message |
jcx1028
Smarty Rookie
Joined: 13 Apr 2012
Posts: 12
|
 Posted: Fri Apr 13, 2012 6:44 pm Post subject: If File Exists |
 |
|
Hi there. I've been working with Flynax's auto classifieds script, which is the first I've ever seen or used Smarty. And honestly, I'm not the best with regular PHP to begin with. So please pardon me while I ask a potentially dumb question.
On the dealer profile pages of our site (http://www.theusedcarplace.com/index.php?page=dealer-accounts&id=24), I'm using the following code to pull in a JPG of the dealer's most recent print ads.
| Code: | <div class="print-ads">
<a href="http://www.theusedcarplace.com/print-ads/{$account.Full_name|replace:" ":"_"|lower}.pdf" target="_blank"><img src="http://www.theusedcarplace.com/print-ads/{$account.Full_name|replace:" ":"_"|lower}.jpg" />
<p>Click to View PDF</p>
</a>
</div> |
The problem is, on pages for dealers who haven't run a print ad (http://www.theusedcarplace.com/index.php?page=dealer-accounts&id=4), there obviously isn't a corresponding JPG, so I get a missing image.
If possible, I'd like to use an {if} statement to show the JPG if it exists, but to show nothing if it does not. Here's what I've been playing with...
| Code: | {assign var="printad" value="http://www.theusedcarplace.com/print_ads/{$account.Full_name|replace:" ":"_"|lower}.jpg"}
{if file_exists($printad)}
<div class="print-ads">
<a href="http://www.theusedcarplace.com/print-ads/{$account.Full_name|replace:" ":"_"|lower}.pdf" target="_blank"><img src="http://www.theusedcarplace.com/print-ads/{$account.Full_name|replace:" ":"_"|lower}.jpg" />
<p>Click to View PDF</p>
</a>
</div>
{/if} |
...Except that doesn't work. It pretty much breaks the entire site.
Any suggestions? |
|
| Back to top |
|
mohrt
Administrator
Joined: 16 Apr 2003
Posts: 7036
Location: Lincoln Nebraska, USA
|
| Posted: Fri Apr 13, 2012 7:19 pm Post subject: |
|
|
Is the image file a local file, or on a remote machine? You cannot use file_exists() on a URL, but you can use it on a local file. I'd try using a local file path instead of a URL, if possible.
| Code: | {if file_exists('../path/to/file.jpg')}
...
{/if} |
Of course the BEST solution is to handle all this stuff on the PHP side before you touch a template, and assign a flag and/or corrected filepath, so you just do something like this:
| Code: | $ad['exists'] = file_exists($path_to_image);
if($ad['exists']) {
$ad['url_pdf'] = $url_to_pdf;
$ad['url_image'] = $url_to_image;
}
$smarty->assign('ad',$ad); |
| Code: | {if $ad.exists}
<a href="{$ad.url_pdf}">{$ad.url_image}</a>
{/if} |
[note] breaks entire site because php error on file_exists(URL), see your php error log. |
|
| Back to top |
|
jcx1028
Smarty Rookie
Joined: 13 Apr 2012
Posts: 12
|
| Posted: Tue Apr 17, 2012 5:30 pm Post subject: |
|
|
I've got the path changed to a local file rather than a URL, but it's still not really working. It's showing ".pdf'} 0" in the spot where I'd like it to display the JPG. Here's what I'm using at the moment...
| Code: | {assign var="printad" value='/print-ads/{$account.Full_name|replace:" ":"_"|lower}.pdf'}
{if file_exists($printad)}
<img src="/print-ads/{$account.Full_name|replace:" ":"_"|lower}.jpg" />
{else}
0
{/if} |
Could it be because of the nested brackets in the first line? Because while the following code doesn't work either, it merely shows a "0"...
| Code: | {assign var="printad" value='/print-ads/[$account.Full_name|replace:" ":"_"|lower].pdf'}
{if file_exists($printad)}
<img src="/print-ads/{$account.Full_name|replace:" ":"_"|lower}.jpg" />
{else}
0
{/if} |
|
|
| Back to top |
|
U.Tews
Administrator
Joined: 22 Nov 2006
Posts: 4175
Location: Hamburg / Germany
|
| Posted: Tue Apr 17, 2012 5:45 pm Post subject: |
|
|
Nesting of tags does work only in double quoted strings.
| Code: | | {assign var="printad" value="/print-ads/{$account.Full_name|replace:" ":"_"|lower}.pdf"} |
|
|
| Back to top |
|
jcx1028
Smarty Rookie
Joined: 13 Apr 2012
Posts: 12
|
|
| Back to top |
|
jcx1028
Smarty Rookie
Joined: 13 Apr 2012
Posts: 12
|
| Posted: Wed Apr 18, 2012 3:28 pm Post subject: |
|
|
Through trial and error (lots and lots of error), I finally figured it out. Here's what eventually worked...
| Code: | {assign var="img_path" value=$account.Full_name|replace:" ":"_"|lower}
{assign var="image"
value="../public_html/print-ads/$img_path.jpg"}
{if file_exists($image)}
<div class="print-ads">
<a href="/print-ads/{$account.Full_name|replace:" ":"_"|lower}.pdf" target="_blank"><img src="/print-ads/{$account.Full_name|replace:" ":"_"|lower}.jpg" />
<p>Click to View PDF</p>
</a>
</div>
{/if} |
If you'll excuse me, I now need to go run a victory lap around the building. Probably shirtless. Because why the hell not, right? |
|
| Back to top |
|
jcx1028
Smarty Rookie
Joined: 13 Apr 2012
Posts: 12
|
| Posted: Wed Apr 18, 2012 3:28 pm Post subject: |
|
|
| Thank you all for your help, by the way. I appreciate it. |
|
| Back to top |
|
|
