Question

我在使用自定义库在Codeigniter 3中创建线程注释时遇到了一些麻烦。

当我在控制器中手动声明一个数组时，库正在工作，但是当我尝试从模型中传递一个数组时，它没有。

使用编码到控制器中的数组的示例：

$comments = array(  
array (
  'first_name' => 'James',
  'last_name' => 'Smith',
  'country' => 'UK',
  'profile' => 'avatar87.jpg',
  'id' => '1',
  'member_id' =>  '18',
  'policy_id' => '6',
  'comment' => '<p>This is my comment.Do you agree?</p>',
  'submitted' => '2015-09-22 07:20:21',
  'parent_id' => NULL),
   array (
  'first_name' => 'Peter',
  'last_name' => 'Green',
  'country' => 'Australia',
  'profile' => 'avatar88.jpg',
  'id' => '2',
  'member_id' =>  '18',
  'policy_id' => '6',
  'comment' => '<p>This is my comment.Do you agree?</p>',
  'submitted' => '2015-09-22 07:20:21',
  'parent_id' => '1'),
   array (
  'first_name' => 'Ollie',
  'last_name' => 'Ford',
  'country' => 'Australia',
  'profile' => 'avatar85.jpg',
  'id' => '3',
  'member_id' =>  '18',
  'policy_id' => '6',
  'comment' => '<p>This is my comment.Do you agree?</p>',
  'submitted' => '2015-09-22 07:20:21',
  'parent_id' => '1'),
         );

 $this->data['comments'] = $comments;

以上一切正常，但是当我尝试这个时：

$comments = $this->question_model->get_policy_comments($id);
$this->data['comments'] = $comments;

它不起作用。

这是从模型返回的$ comments数组。

 array (size=3)
  0 => 
    array (size=10)
      'first_name' => string 'Ollie' (length=5)
      'last_name' => string 'Falle' (length=5)
      'country' => string 'Australia' (length=9)
      'profile' => string 'avatar87.jpg' (length=12)
      'id' => string '1' (length=1)
      'member_id' => string '18' (length=2)
      'policy_id' => string '6' (length=1)
      'comment' => string '<p>This is my comment.Do you agree?</p>' (length=39)
      'submitted' => string '2015-09-22 07:20:21' (length=19)
      'parent_id' => string 'NULL' (length=4)
  1 => 
    array (size=10)
      'first_name' => string 'Ollie' (length=5)
      'last_name' => string 'Falle' (length=5)
      'country' => string 'Australia' (length=9)
      'profile' => string 'avatar87.jpg' (length=12)
      'id' => string '2' (length=1)
      'member_id' => string '18' (length=2)
      'policy_id' => string '6' (length=1)
      'comment' => string '<p>Blah blah blah</p>' (length=21)
      'submitted' => string '2015-09-22 15:00:00' (length=19)
      'parent_id' => string '1' (length=1)
  2 => 
    array (size=10)
      'first_name' => string 'Ollie' (length=5)
      'last_name' => string 'Falle' (length=5)
      'country' => string 'Australia' (length=9)
      'profile' => string 'avatar87.jpg' (length=12)
      'id' => string '3' (length=1)
      'member_id' => string '18' (length=2)
      'policy_id' => string '6' (length=1)
      'comment' => string '<p>Hello is it me your looking for.</p>' (length=39)
      'submitted' => string '2015-09-22 13:39:46' (length=19)
      'parent_id' => string '1' (length=1)

我错过了数组的东西吗？

任何帮助都将不胜感激。

供参考，这里是使用它的库。

 <?php  if (!defined('BASEPATH')) exit('No direct script access allowed');

class Threaded
{

    public $parents  = array();
    public $children = array();

    /**
     * @param array $comments
     */
    public function arrange($comments)
    {
        foreach ($comments as $comment)
        {

            if ($comment['parent_id'] === NULL)
            {
                $this->parents[$comment['id']][] = $comment;
            }
            else
            {
                $this->children[$comment['parent_id']][] = $comment;
            }
        }
        $this->print_comments();
    }

    private function tabulate($depth)
    {
        for ($depth; $depth > 0; $depth--)
        {
           // echo "t";
        }
    }

    /**
     * @param array $comment
     * @param int $depth
     */
    private function format_comment($comment, $depth)
    {

        //echo "n";

        $this->tabulate($depth+1);

        echo "<li>";
        echo $comment['first_name'];
        echo $comment['last_name'];
        echo $comment['country'];
        echo $comment['profile'];
        echo $comment['member_id'];
        echo $comment['policy_id'];
        echo $comment['comment'];
        echo $comment['submitted'];
        echo $comment['id'];
        echo $comment['parent_id'];
        echo "</li>";
    }

    /**
     * @param array $comment
     * @param int $depth
     */
    private function print_parent($comment, $depth = 0)
    {
        $this->tabulate($depth);
        echo "<ul>";
        foreach ($comment as $c)
        {
            $this->format_comment($c, $depth);

            if (isset($this->children[$c['id']]))
            {
                $this->print_parent($this->children[$c['id']], $depth + 1);
            }
        }
        $this->tabulate($depth);
        echo "</ul>";
    }

    private function print_comments()
    {
        foreach ($this->parents as $c)
        {
            $this->print_parent($c);
        }
    }

}

Answer 1

不确定处理数据的逻辑是什么，但（除非是拼写错误）静态数组看起来像

array(data),  array(data),  array(data)  //with an unopened )

并且从模型返回的数组是

array(  array(data),  array(data),  array(data)  )

你想要对数组做什么？你是如何从模型中获得输出的（即：var_dump（）;, print_r（）;）？另外你在第一个例子中如何定义$ comments？

Answer 2

您可以在一行中分配评论

$this->data['comments'] = $this->question_model->get_policy_comments($id);

只需通过下面的代码查看它，看看数组的模式

echo '<pre>'; print_r($comments); die();

Answer 3

所以现在阵列看起来是正确的。但是我认为你的问题是你在静态数组中实际传递一个NULL值，在返回的数组中你的'NULL'值实际上被解释为一个字符串而不是NULL。

在传递数组之前：

for($i=0; $i<count($comments); $i++){
    foreach($comments[$i] as $k => $v){
        if(strtoupper($v) === 'NULL'){
           $comments[$k] = NULL;
        }
    }
}

或在你的模特中

public function arrange($comments)
{
    foreach ($comments as $comment)
    {

        if ($comment['parent_id'] === NULL || $comment['parent_id']==='NULL')
        {
            $this->parents[$comment['id']][] = $comment;
        }
        else
        {
            $this->children[$comment['parent_id']][] = $comment;
        }
    }
    $this->print_comments();
}

在Codeigniter中从模型传递返回的数组的问题

3 个答案: