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chaosone Smarty n00b
Joined: 24 Jul 2003 Posts: 2 Location: Kent, England
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Posted: Thu Jul 24, 2003 9:21 pm Post subject: Unable to do $obj->arr[sec_name].var? |
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Hi!
I've been using Smarty for almost a year now, and am really liking it. I have only really got on to doing some serious work with it in the past two months, and have come across something that I haven't been able to (satisfactorily) solve reading FAQs, Wiki, searching the forum and such.
I am using Smarty 2.5.0 by the way.
I have started using objects to hold a lot of page information, one piece of which is contained within an array. As an example (from my project) I have a $layout object with a $scripts array in it, with each element of that array holding an array with associative values such as "rel"=>"stylesheet" "href"=>"mystyle.css" etc. What I would like to do is quickly access this array from the Smarty template, after assigning the object to the template object.
Code: |
{section name=count_s loop=$layout->scripts}
<script rel="{$layout->scripts[count_s].rel}" href="{$layout->scripts[count_s].href}" type="{$layout->scripts[count_s].type}"></script>
{/section}
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The code appears to loop the correct number of times, but all I get between the quotes on the output is emptyness (nothing). So it counts the $layout->scripts array fine, I just can't seem to use it within the section (or even outside of one).
The above syntax looks logical (to me!) I just can't understand if I'm missing something as to why it doesn't work, or if there is a reason this syntax isn't supported (or might it be in the future?) I presume I could do things like assign the $object->array bit to an intermediate template variable, but would very much like to avoid this if possible.
Cheers! |
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messju Administrator
Joined: 16 Apr 2003 Posts: 3336 Location: Oldenburg, Germany
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Posted: Thu Jul 24, 2003 9:46 pm Post subject: |
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it looks logical to me too and the php-code produced by {$layout->scripts[count_s].rel is also correct. is your script array indexed by 0..n-1 as it has to when used with {section} ? |
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boots Administrator
Joined: 16 Apr 2003 Posts: 5611 Location: Toronto, Canada
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Posted: Thu Jul 24, 2003 9:48 pm Post subject: |
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Hi chasone.
AFAIK, that syntax is not supported, at least in 2.5.0 (at least it never works for me). Looking at your code I can suggest two somewhat simple workarounds:
1) Use an intermediate variable. This is a bit messy, though.
Code: | {section name=count_s loop=$layout->scripts}
{assign var=script value=$layout->scripts[count_s]}
<script rel="{$script.rel}" href="{$script.href}" type="{$script.type}"></script>
{/section}
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2) Use foreach instead of section. You *may* have to use an intermediate here as well, to represent the from var. I won't bother with that detail as it is more than likely that you won't have to deal with it:
Code: | {foreach item=script from=$layout->scripts}
<script rel="{$script.rel}" href="{$script.href}" type="{$script.type}"></script>
{/foreach} |
As an added benefit, foreach loops tend to be easier to read (brain parse) than sections. I prefer the 2nd option for myself.
HTH |
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messju Administrator
Joined: 16 Apr 2003 Posts: 3336 Location: Oldenburg, Germany
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Posted: Thu Jul 24, 2003 9:52 pm Post subject: |
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'nah boots, the syntax is correct and supported. but i agree with you that foreach simplifies things sometimes really and this case is a good example that it does |
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boots Administrator
Joined: 16 Apr 2003 Posts: 5611 Location: Toronto, Canada
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Posted: Thu Jul 24, 2003 9:56 pm Post subject: |
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My bad. Like I said, it never worked for me, though I never tried too hard since I typically try to structure for foreach anyhow. As I typically use associative arrays, that could have been my problem with the syntax.
Never-the-less, I was unaware that that syntax was available in 2.5.0, so thanks for that. I still suggest the foreach route as it makes for lighter code |
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chaosone Smarty n00b
Joined: 24 Jul 2003 Posts: 2 Location: Kent, England
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Posted: Thu Jul 24, 2003 10:10 pm Post subject: |
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Thanks for the speedy response guys, I feel a bit stupid now though because after five hours (at least) trying to find out why Smarty didn't support this syntax and then posting here for some help, I realise it's actually my PHP coding that was buggered up
As messju pointed out, the array has to be index by 0...n-1, but because of the way I was adding items to the array for my $layout object, this wasn't happening! Apologies for being a bit brain dead looking at my code, at least it has taught boots a new syntax |
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