Support archive

Early parsed variable to set 'status'?

ira42 25 Mar 2010 22:19 question, complete

Just getting started with LV, so I might just be missing something obvious.

I'm thinking of enabling LG Live Look, but don't want to duplicate all of my templates, to create a 'preview' template. I am trying to detect the logged in member's member_group, and if they are super admins, add my "Preview" status to the weblog:entries tag.

So, by default I have:

.... status="Open" ....

but would like an early parsed variable injected there:

.... status="Open|{var_status_preview}"

with the Low Variable containing the following:



{if member_group == '1'}|Preview{/if}



Can LV run code like this, so that the weblog:entries tag will respect that second status? Tried but it's not working.

Don't know if I'm using it wrong, if member_group isn't available by the 'early parsing' stage, whether the low Var is processed early enough...

Any ideas? Tx!

Replies

1. Low 26 Mar 2010 08:43

   Hi Ira,
   
   First, I'll explain roughly when EE variables are parsed (see also the Parse Order wiki article).
   
   1. Early parsed vars (like path.php vars)
   2. Regular template parsing ({exp:low_variables:parse})
   3. Regular global vars (like the User Defined Template vars)
   
   With your code, you're actually using a var parsed at stage 1 to display another var that will be parsed at stage 3 (the {if member_group} conditional, which should be {group_id}, by the way). So this results in having the literal string of the conditional as a tag parameter value. That's why it doesn't work.
   
   Low Variables will not do any 'pre-parsing' of tags within the variable before outputting its value. Instead it works just like a string replace.
   
   The only way I can think of to get the behaviour you're after, is by using PHP on input in the template. Something like this:
   
   <?php

global $SESS;

$status = 'Open';

if ($SESS->userdata['group_id'] == '1'):
$status .= '|Preview';
endif;

?>

{exp:weblog:entries status="<?=$status?>"}
...
{/exp:weblog:entries}
   
   Note: GetSatisfaction's code formatting is messing my code up a bit.
   It's $SESS->userdata['group_id'], without the question mark in the middle.

2. ira42 26 Mar 2010 12:58

   Hi Low,
   
   Thanks for the thorough explanation!
   
   I actually came to the same conclusion when running some tests... I ended up adding similar php, but into a Low Variable. Didn't work right away, until I set the display template to "Allow PHP on Input", and then it worked fine.
   
   Definitely not ideal (there are many templates, embeds,etc), so I will need to consider building an extension, which automatically modifies the weblog status automatically.
   
   Thanks again!
   
   Ira
   
   EDIT: Oh, and "member_group" is actually an accepted alternative to group_id, at least when used as a global variable.