EE1.x: Plugin position in template parse order
Development and Programming
Hi
I have a very simple plugin that takes a related gallery entry ID and returns the gallery category of the image:
function Gallerycategory()
{
global $TMPL, $DB;
$query = $DB->query("SELECT rel_data FROM exp_relationships WHERE rel_id = '" . $TMPL->fetch_param('relationship_id') . "'");
$row['rel_data'] = $query->row['rel_data'];
if ($reldata = @unserialize($row['rel_data']))
{
$this->return_data = $reldata['query']->result[0]['cat_id'];
}
}This works fine in a template as follows (I’m passing in the category ID from a parent template):
cat id = {exp:gallerycategory relationship_id='{embed:gallery_category}'}Results in:
cat id = 5
But when I try to use this in a gallery:entries tag, I get no results:
{exp:gallery:entries gallery="{embed:gallery}" category="{exp:gallerycategory relationship_id='{embed:gallery_category}'}" orderby="date" sort="asc" columns="1" rows="100" log_views="off" dynamic="off"}Hardcoding the category parameter works fine, so I know there are images in the category.
Do plugins not return their data before the gallery entries are searched?
russback, we don’t provide direct support for writing plugins. Moving to the Plugins folder for additional community support.
Hi Sue
This isn’t a plugin support request as such - I’m just trying to understand the parse order of the EE templates as I would have expected the plugin to be parsed befpre the gallery tag?
Hi, russback - did you see the comments on parse order in the plugin docs? you can change it using the parse= parameter.
Hi.
Yes I did but this appears to make no difference as it’s not 2 embedded plugins that are causing the problem - it’s the fact that the galleries tag appears to be parsed before the plugin. This is a problem because the plugin outputs the category parameter for the gallery tag.
Does that make sense?
Right, it doesn’t matter if it’s two plugins or the gallery tag. Try adding that tag to either your plugin or the galleries tag to change the parse order.
OK, thanks - that’s fixed it eventually.
However what confused matters was that for some reason the rel_data column in the exp_relationships table had become blank. Do you know of any situations that would empty this value? Resaving the weblog entry created a new entry in the table but I’m at a loss as to why the data in that column would have been removed.