Foreach循环（或者可能吗？） - 要根据页面只返回一个记录 [英] Foreach loop (or do while maybe?) - Want to return only one record depending on page

问题描述

用下面的编辑代码解决这个问题。感谢所有的帮助！

我在db中有两条记录。每个记录有6个字段（challengeId，partnerName，code，challengeTitle，description，image_url）。我从我的父页面视图中选择一个给定的partnerName去我的子页面视图。

我正在使用foreach循环并遇到问题。我已经拿出我的foreach循环，并用<？php $ challengename = $ this-> challengenames [$ k] = current（$ this-> challengenames）替换它。 ？> ，但现在无法获取子页面显示与我在我的父页面上选择的partnerName相对应的challengeTitle的值。它始终提供第一条记录的challengeTitle值，而不是当前记录。我需要知道如何使challengeTitle值的变化取决于我在我的父页面上选择的哪一个partnerName。

将这个做为while循环或if语句页面控制器修复这个问题？

任何建议（和代码更改）非常赞赏。 b

父页面控制器

  public function viewChallengesAction（）{
 // get instance for请求
 $ request = JO_Request :: getInstance（）; 
 //获得激活的挑战名称和设置变量
 $ myChallenge = $ this-> getChallenge（）; 
 $ this-> view-> challengenames = array（）; 
 foreach（$ myChallenge AS $ k => $ challengename）{
 $ this-> view-> challengenames [$ k] ['href'] = WM_Router :: create（$ request- > getBaseUrl（）。'？module = challenges& controller = index& action = yourChallenge？code ='。$ challengename ['partnerName']）; 
 $ this-> view-> challengenames [$ k] ['partnerName'] = $ challengename ['partnerName']; 
 
  

---

CHILD VIEW

 < div id =defaultcontainerwrapperclass =maxwidth> 
<？php $ challengename = $ this-> challenge; ？> 
< header> 
< h1> 
< div class =list> 
< span>欢迎使用< / span><？php echo $ challengename ['partnerName']; ？>< span>的Beat Waste Challenge！< / span> 
< / div> 
< / h1> 
< / header> 
<？php}？> 
< / div> 
  

---

CHILD CONTROLLER

  public function yourChallengeAction（）{
 //获取激活的挑战名称和设置变量
 $ request = JO_Request :: getInstance（）; 
 $ myChallenge = $ this-> getChallenge（）; 
 $ code = $ request-> getQuery（code）; 
 $ this-> view-> challengenames = array（）; 
 foreach（$ myChallenge AS $ k => $ challengename）{
 if（$ challengename ['partnerName'] == $ code）
 {
 $ this-> view-> challenge = $ challengename; 
 break; 
 
 
 $ b  

解决方案

如果您不知道该键，并且想要数组的当前元素，您可以使用：

  $ challengename =当前（$ this-> challengenames）; 
  

或者数组的第一个元素：

  $ challengename = reset（$ this-> challengenames）; 
  

或者数组的最后一个元素：

  $ challengename = end（$ this-> challengenames）; 
  

请注意，结束和重置将改变数组的指针位置。 $ b

Solved this with edited code below. Thanks to all who helped!

I have two records in my db. Each record has 6 fields (challengeId, partnerName, code, challengeTitle, description, image_url). I select a given partnerName from my parent page view to go to my child page view.

I was using a foreach loop and having problems. I have now taken out my foreach loop and replaced it with <?php $challengename = $this->challengenames[$k] = current($this->challengenames); ?> but now cannot get the child page to display the values for challengeTitle that correspond to 'partnerName' I chose on my parent page. It always provides the challengeTitle value of the first record instead of the current record. I need to know how to make the challengeTitle value change depending on which partnerName I chose on my parent page.

Will making this a do while loop or if statement in the child page controller fix this?

Any advice (and code changes) is very much appreciated.

---

parent page controller

public function viewChallengesAction(){
    //get instance for request
    $request = JO_Request::getInstance();
    //get activated challenge names and set variables
    $myChallenge=$this->getChallenge();
    $this->view->challengenames = array();
    foreach($myChallenge AS $k=>$challengename){
        $this->view->challengenames[$k]['href'] = WM_Router::create($request->getBaseUrl() . '?module=challenges&controller=index&action=yourChallenge?code=' . $challengename['partnerName']);
        $this->view->challengenames[$k]['partnerName'] = $challengename['partnerName'];
    }

---

CHILD VIEW

<div id="defaultcontainerwrapper" class="maxwidth">
    <?php $challengename = $this->challenge; ?>
        <header>
        <h1>
            <div class="list">
                <span>Welcome to </span><?php echo $challengename['partnerName']; ?><span>'s Beat Waste Challenge!</span>
             </div>
        </h1>
        </header>
    <?php } ?>
</div>

---

CHILD CONTROLLER

public function yourChallengeAction(){
    //get activated challenge names and set variables
    $request = JO_Request::getInstance();
    $myChallenge=$this->getChallenge();
    $code = $request->getQuery("code");
    $this->view->challengenames = array();
    foreach($myChallenge AS $k=>$challengename){
        if ($challengename['partnerName'] == $code)
        {
            $this->view->challenge = $challengename;
            break;
        }

    }

解决方案

If you don't know the key and want the current element of the array, you could use:

$challengename = current($this->challengenames);

Or the first element of the array:

$challengename = reset($this->challengenames);

Or the last element of the array:

$challengename = end($this->challengenames);

Just note that end and reset will change the pointer location of the array.

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