try this inside the loop:
<?php
if ( has_post_thumbnail()) {
// do stuff if there is a post thumbnail
} else {
do stuff if there is not a post thumbnail
}
?>
I don’t know how c2c_get_custom works but try something like this (in the loop):
<?php
$book_title = '.01.LZZZZZZZ.jpg" alt="Book Cover" />' . $post->post_title . '</a>';
echo c2c_get_custom('isbn-10', '<img src="http://images.amazon.com/images/P/',$book_title); ?> ?>
Thread Starter
Ian
(@ianaleksander)
wow, has_post_thumbnail, huh? That seems so simple. For some reason I assumed that something like that just didn’t exist.
I’ll give it a shot and report back.
about the c2c links, it’s from a plugin that lets you use that function to get custom field info. I’m not sure if that’s the standard way of doing it now but I’ve been doing that for a few wordpress versions now and it still works *shrug*
I’m actually looking to replace the alt text “Book Cover” with the title of the post.
Oops, try it with this:
<?php
$book_title = '.01.LZZZZZZZ.jpg" alt="'.$post->post_title.'" /></a>';
echo c2c_get_custom('isbn-10', '<img src="http://images.amazon.com/images/P/',$book_title);
?>
Thread Starter
Ian
(@ianaleksander)
I think that might work, I’ll try it!
Thread Starter
Ian
(@ianaleksander)
This is the basic code for my first part but I’m not sure how to do the echos properly. is there a good tutorial for php formatting for this kind of thing?
<?php
if (has_post_thumbnail()) {
<a href="<?php $image_id = get_post_thumbnail_id();
$image_url = wp_get_attachment_image_src($image_id,'large', true);
echo $image_url[0]; ?>" class="thickbox">
<?php the_post_thumbnail(); ?></a>
} else {
echo 'test';
}
?>
Thread Starter
Ian
(@ianaleksander)
ok, I’m rying it like this and it seems to be working?
<?php
if (has_post_thumbnail()) {
$image_id = get_post_thumbnail_id();
$image_url = wp_get_attachment_image_src($image_id,'large', true);
echo '<a href="';
echo $image_url[0];
echo '" class="thickbox">';
the_post_thumbnail();
echo '</a>';
} else {
echo 'test';
}
?>
Yes this should work (I cleaned it up a little bit)
<?php
if (has_post_thumbnail()) {
$image_url = wp_get_attachment_image_src(get_post_thumbnail_id(),'large', true);
echo '<a href="' . $image_url[0] .'" title="' . the_title_attribute('echo=0') . '">';
the_post_thumbnail();
echo '</a>';
} else {
echo 'test';
}
?>
Thread Starter
Ian
(@ianaleksander)
thanks for all your help, it seems to be working really well:
http://www.tradereadingorder.com/list/novels/fantasy/forgotten-realms/
This is the code I’m currently using:
<?php
if (has_post_thumbnail()) {
$image_url = wp_get_attachment_image_src(get_post_thumbnail_id(),'large', true);
echo '<a href="' . $image_url[0] .'" title="' . the_title_attribute('echo=0') . ' class="thickbox" />
';
the_post_thumbnail();
echo '</a>';
} else {
$book_title = '.01.THUMBZZZ.jpg" alt="'.$post->post_title.'" />';
echo c2c_get_custom('isbn-10-sc', '<a href="http://images.amazon.com/images/P/','.01.LZZZZZZZ.jpg" class="thickbox">');
echo c2c_get_custom('isbn-10-sc', '<img src="http://images.amazon.com/images/P/',$book_title);
}
?>
I’ve got one final thing I’d like to try. That isbn-10-sc custom field has the isbn for the softcover book. But sometimes a release only has a hardcover. Is there a way to do an if statement with custom fields?
I’d like to make it show a copy of that code with “hc” if the book has hardcover, a copy of the code with “sc” if the book has sc, or a copy of the code without either if it’s a weird release (some just have isbn-10). I want it to cascade in that order. Any ideas?
Again, thanks for all your help – you’re saving me hours of trial and error!
Thread Starter
Ian
(@ianaleksander)
huh, I messed something up with that last one and the thickbox wasn’t working with the thumbnail image. This code works:
<?php
if (has_post_thumbnail()) {
$image_url = wp_get_attachment_image_src(get_post_thumbnail_id(),'large', true);
echo '<a href="' . $image_url[0] .'" class ="thickbox" title="' . the_title_attribute('echo=0') . '">';
the_post_thumbnail();
echo '</a>';
} else {
$book_title = '.01.THUMBZZZ.jpg" alt="'.$post->post_title.'" />';
echo c2c_get_custom('isbn-10-sc', '<a href="http://images.amazon.com/images/P/','.01.LZZZZZZZ.jpg" class="thickbox">');
echo c2c_get_custom('isbn-10-sc', '<img src="http://images.amazon.com/images/P/',$book_title);
}
?>
Thread Starter
Ian
(@ianaleksander)
Thought I might update you with the final code I ended up going with:
<?php
if (has_post_thumbnail()) {
$image_url = wp_get_attachment_image_src(get_post_thumbnail_id(),'large', true);
echo '<a href="' . $image_url[0] .'" class ="thickbox" title="' . the_title_attribute('echo=0') . '">';
the_post_thumbnail();
echo '</a>';
}
else {
$isbn = c2c_get_custom('isbn-10-hc');
list($Width) = @getimagesize("http://images.amazon.com/images/P/" . $isbn . ".01.THUMBZZZ.jpg");
if ($Width > 1)
{
$book_title = '.01.THUMBZZZ.jpg" alt="'.$post->post_title.'" title="'.$post->post_title.'" />';
echo c2c_get_custom('isbn-10-hc', '<a href="http://images.amazon.com/images/P/','.01.LZZZZZZZ.jpg" class="thickbox">');
echo c2c_get_custom('isbn-10-hc', '<img src="http://images.amazon.com/images/P/',$book_title);
}
else {
$isbn = c2c_get_custom('isbn-10-sc');
list($Width) = @getimagesize("http://images.amazon.com/images/P/" . $isbn . ".01.THUMBZZZ.jpg");
if ($Width > 1)
{
$book_title = '.01.THUMBZZZ.jpg" alt="'.$post->post_title.'" title="'.$post->post_title.'" />';
echo c2c_get_custom('isbn-10-sc', '<a href="http://images.amazon.com/images/P/','.01.LZZZZZZZ.jpg" class="thickbox">');
echo c2c_get_custom('isbn-10-sc', '<img src="http://images.amazon.com/images/P/',$book_title);
}
else {
$isbn = c2c_get_custom('isbn-10');
list($Width) = @getimagesize("http://images.amazon.com/images/P/" . $isbn . ".01.THUMBZZZ.jpg");
if ($Width > 1)
{
$book_title = '.01.THUMBZZZ.jpg" alt="'.$post->post_title.'" title="'.$post->post_title.'" />';
echo c2c_get_custom('isbn-10', '<a href="http://images.amazon.com/images/P/','.01.LZZZZZZZ.jpg" class="thickbox">');
echo c2c_get_custom('isbn-10', '<img src="http://images.amazon.com/images/P/',$book_title);
}
else {
echo '<img src="http://www.tradereadingorder.com/pics/no-cover-thumbnail.gif" alt="No Cover" title="No Cover">';
} } } }
?>
I feel like there must be some better way to do the conditional statements, but it works! It goes user-uploaded image > Amazon image hardcover > Amazon image softcover > placeholder image.
Thanks for all your help!!
Thanks for sharing your code! I had a look at the post by Matt Brett and he uses the same sort of if-elseif, so as a non-coder, I think it’s easier to follow.
http://mattbrett.com/workshop/2010/wordpress-post-thumbnails-revisited/
Thread Starter
Ian
(@ianaleksander)
ok, so I can do else if instead of just nested “else” tags?
Thread Starter
Ian
(@ianaleksander)
accidental double post, sorry. deleted.
Curious though, are the else if statements less load on the server?
Umm… if I’ve understood it correctly, it’s mostly a case of conditionals written like so: if, else-if, else-if, else, so whatever is the final outcome is else? So no different to what you’re doing I suppose.
I think more knowledgeable people will be able to advise you as to anything else (like Switch maybe?) but just to clarify that I was just saying your code makes sense the way it is, and that other (more code-savvy) people have done the same thing so it should be okay?
Thread Starter
Ian
(@ianaleksander)
yeah it seems to be working. I sometimes worry that my duct taped together code will fall apart under pressure when my site starts getting more traffic, but for now it looks good!
