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Perform simple calculations inside templates!
Lea Verou
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Lea Verou Lea Verou is offline 08-22-2008, 10:00 PM
I was quite excited to find this out!

Have you ever wanted to make a simple calculation for a template, like an addition or subtraction? Personally, I needed this many times and most of them I created a plugin for that. Today I discovered that that is unecessary. You can use the conditional to make simple calculations. For instance, lets suppose you want to display somewhere the userid of the current user, incremented by one. You could do this:
HTML Code:
<if condition="$nextid = $bbuserinfo['userid']+1"></if>
The next userid is $nextid.
This will display as (given that the userid of the user viewing is 1):
Quote:
The next userid is 2.
Of course the userid example is very simple, just to make you understand what I'm talking about.

Let me know if it helped you!
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  #12  
Old 07-14-2009, 11:01 PM
Lea Verou Lea Verou is offline
 
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Quote:
Originally Posted by L2V View Post
Anyone know what kinds of simple calculations can be done using this method?
Anything that doesn't involve functions or the functions involved are allowed within templates.
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  #13  
Old 08-13-2009, 02:18 PM
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xlguy xlguy is offline
 
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Thanks for sharing.

Could you do a multiplication? So

$newfigure = $oldfigure + $oldfigure * 0.15

Any idea?
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Old 08-13-2009, 02:27 PM
Lea Verou Lea Verou is offline
 
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Yes you can.
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Old 08-13-2009, 02:33 PM
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Thanks, sorry I should have been a bit clearer, what would the syntax be?
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Old 08-13-2009, 04:58 PM
Lea Verou Lea Verou is offline
 
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Code:
<if condition="$newfigure = $oldfigure + $oldfigure * 0.15"></if>
And after that, use $newfigure normally in your template
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  #17  
Old 09-03-2009, 04:58 AM
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TimberFloorAu TimberFloorAu is offline
 
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What would be the format for:

Displaying the cumulative count of all a users posts ?

so if they have 5 threads.

thread a has 23 views
thread b has 34 views
thread 3 has 26 views

so on and so on...

and create code to echo the total of those views a+b+c etc
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  #18  
Old 09-03-2009, 06:04 AM
Lea Verou Lea Verou is offline
 
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If I understood what you're trying to do correctly, that's not possible in the templates alone.
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Old 09-03-2009, 09:50 PM
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Ok thanks, back to the drawing board.
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  #20  
Old 10-21-2009, 05:36 PM
Dax IX Dax IX is offline
 
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This is a great tip! I've already found a couple of uses for it.
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