Question

(Using ModX 1.0.5)

When I execute my current snippet (see snippet below), it seems to completely ignore the if(empty()) checks. I have also tried with if($promoX == ), also no luck.

<?php
    $promo1 =  [*sidepromotop*] ; // assets/images/promo1.jpg
    $promo2 =  [*sidepromobot*] ; // this variable is empty.

    if(empty($promo1) && empty($promo2)){
       echo  [!Ditto? &startID=`92` &depth=`1` &display=`2` &randomize=`1` &tpl=`Promo-Block-Styles`!] ;
    }else{
       if(empty($promo1)){
          echo  [!Ditto? &startID=`92` &depth=`1` &display=`1` &randomize=`1` &tpl=`Promo-Block-Styles`!] ;
       }else{
          echo  <div class="promo"><img src=" .$promo1. " alt="" /></div> ;
       }
       if(empty($promo2)){
          echo  [!Ditto? &startID=`92` &depth=`1` &display=`1` &randomize=`1` &tpl=`Promo-Block-Styles`!] ;
       }else{
          echo  <div class="promo"><img src=" .$promo2. " alt="" /></div> ;
       }
    }
?>

以上准则出于某种原因将显示如下:

<div class="promo">
    <img src="assets/images/promo1.jpg" alt="">
</div>
<div class="promo">
    <img src="" alt="">
</div>

你可以看到,即使变量是空的,在我通过我的法典管理这一变量时,它显然仍然认为它不是空洞的。

我真的希望能看到这方面的一些见解,因为我是新鲜的,我是这样一位头脑!

感谢!

Answer 1

MODX 标签,如[* E/CN.6/2009/1。sidepromotop* E/CN.6/2009/1。],不在单薄板(原为php)之内,因此实际上,空洞()检查工作正在完美地进行,因为你正在把未铺设的标签作为扼杀。

你们需要做的是利用) 检索现有文件模板:

$promo1 = $modx->getTemplateVar( sidepromotop );

或者,你可以把这些要素作为参数纳入你的幻灯塔。

[!mySnippet? &promo1=`[* E/CN.6/2009/1。sidepromotop* E/CN.6/2009/1。]` &promo2=`[* E/CN.6/2009/1。sidepromobot* E/CN.6/2009/1。]`!]

......这些变量将作为<代码>$promo1和_$promo2在您的snippet代码中提供。

* E/CN.6/2009/1。

您还应使用 $modx->runSnippet()执行Ditto在氮内,其效率将大大提高。

$output = $modx->runSnippet( Ditto , array(
     startID    => 92,
     depth      => 1,
     display    => 1, 
     randomize  => 1,
     tpl        =>  Promo-Block-Styles ,
));
return $output;

Check out this wiki article for some great tips for creating snippets for MODX: http://wiki.modxcms.com/index.php/Creating_Snippets

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