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Smarty Q: Complicated Section Looping

Posted on 2008-10-12
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Last Modified: 2013-11-10
This might be a little hard to follow...

Basically, I have two menus: FromYear and ToYear.

When the FromYear is selected, the values of the ToYear select fields will change, depending upon the FromYear value.  I pretty much have it working the way that I want, except that I need to insert a comma, *only* if it *isn't* the last item in the array.

The problem is, that the the ToYear values also must meet the condition of being greater than or equal to the FromYear value.  So, the loop never "sees" the last item in the array because of this other conditional statement.  

Right now, the template looks like this:

{section name=i loop=2010 max=40 step=-1}
	fromyear.forValue("{$smarty.section.i.index}").addOptions(
		{section name=ii loop=2009 max=39 step=-1}
			{if $smarty.section.ii.last}
				{if $smarty.section.ii.index >= $smarty.section.i.index}"{$smarty.section.ii.index}"{/if}
			{else}
				{if $smarty.section.ii.index >= $smarty.section.i.index}"{$smarty.section.ii.index}",{/if}
			{/if}
		{/section});
{/section}

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Question by:jen_jen_jen
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4 Comments
 
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Expert Comment

by:Marcus Bointon
ID: 22703558
I don't get your structure - it looks like you're generating a large number of menus, not just two. If it was just two, then I'd expect the loops to be sequential, not nested. Then when a new FromYear is selected, I'd use Javascript to dynamically repopulate the option list of the ToYear menu.

That said, I'm still a little confused as the fact that you're using commas in the output makes it look like you're not using HTML selects... Can you give a bit more context?
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Author Comment

by:jen_jen_jen
ID: 22706233
It's just two menus.  I'm building an array for a js function.
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LVL 25

Expert Comment

by:Marcus Bointon
ID: 22707088
ok, but you're saying that the content of the second menu will change when you select something in the first, which is something that happens after Smarty's involvement has ended?

Aside from that I think it looks like it would be easier to generate this list by pre-filling some arrays with your years and using implode. That's much easier than using Smarty syntax to do the same thing.
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Accepted Solution

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jen_jen_jen earned 0 total points
ID: 22712944
I wound up figuring out what I wanted to do.  Thanks anyway.
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