smarty templates and GD

[nobodaddy]

I have an image resizing script which uses GD. I'd like to incorporate this into my smarty template layout, but it's causing problems. In a normal page, I'd just do something like:

<IMG SRC="resize_image.php?image=$story[picture]">

And that's been working on normal PHP pages where $story[picture] is a databased value like "pictures/424.jpg".

So now that I'm using a smarty template, if I want to run the resize_image.php script I have to bracket it -

{php}
resize_image.php
{/php}

like that...

The problem is that I need to be able to feed resize_image.php a value from the database so it knows what picture to resize. I've tried all sorts of stuff including sending "{php}resize_image.php{/php}" to the template as one big value. The way it compiles it just doesn't seem to work.

In the simplest terms, the problem here is with a script which must be included into a template and fed by dynamic data. Anyone know how to go about this?

thanks.

ian

[Eric.Coleman]

why not use:

<IMG SRC="resize_image.php?image={$story.picture}">

It will work the same way as your other example, assuming you assign( 'story' )

[nobodaddy]

tried that - the problem is that you have to bracket that as {php} to use it within the template, which nullifies the value of {$story.picture}, or rather produces an error - mixing template elements and PHP apparently being a bad thing.

ian

[Eric.Coleman]

Why not show me your template file, and your php that your using to generate it ( assign statements and such )

[nobodaddy]

thanks - here's the code pretty much

resize_image.php consists of, as the name hints, a resizing script that i have been passing variables to with an appended string 'resize_image.php?image=pictures/434.jpg':

if (!$max_width)
  $max_width = 120;
if (!$max_height)
  $max_height = 120;

$size = GetImageSize($image);
$width = $size[0];
$height = $size[1];

$x_ratio = $max_width / $width;
$y_ratio = $max_height / $height;

if ( ($width <= $max_width) && ($height <= $max_height) ) {
  $tn_width = $width;
  $tn_height = $height;
}
else if (($x_ratio * $height) < $max_height) {
  $tn_height = ceil($x_ratio * $height);
  $tn_width = $max_width;
}
else {
  $tn_width = ceil($y_ratio * $width);
  $tn_height = $max_height;
}

$src = ImageCreateFromJPEG($image);
$dst = ImageCreate($tn_width,$tn_height);
ImageCopyResized($dst, $src, 0, 0, 0, 0,
    $tn_width,$tn_height,$width,$height);
header("Content-type: image/jpeg");
ImageJPEG($dst);
ImageDestroy($src);
ImageDestroy($dst); 

so my trouble is how to append it dynamically within the smarty template: I'd like to do something like:

<img src = resize_image.php?image={$main.picture}>

but to include php like that in the smarty template you need to bracket it with either {include_php} or {php} the problem is then that if you're calling what's inside those brackets php, {$main.picture} can no longer be processed as a template variable.

I've tried to get the thing to compile on the php page and output <img src = resize_image.php?image={$main.picture}> with the picture inserted dynamically into the template file - doesn't seem to work. Don't know if there's a way of doing this but I'd be massively thankful for any kind of solution.

thanks!

[Eric.Coleman]

{$main.picture} is a smarty varable!

You would assign like this:

$smarty->assign( 'main', array( 'picture' => 'images/424.gif' ) );