显示标签由标签来分类的列表中的项目

Question

我必须有标签格式任务：

Array 
(
    [0] => stdClass Object 
     (
     [task_id] => 10, 
     [task_text] => Mow and fertilize, 
     [tags] => Array 
      (
       [0] => stdClass Object 
        (
        [tag_id] => 1, 
        [tag_text] => House, 
        [tt_tag_id] => 1, //from relational table, tt = task_tag 
        [tt_task_id] => 10, 
        [tt_id] => 20, //auto id from relational table 
        [tt_order] => 0 
       ), 
       [1] => stdClass Object 
        (
        [tag_id] => 2, 
        [tag_text] => Yard, 
        [task_tag_id] => 2, 
        [task_task_id] => 10, 
        [tt_id] => 21, 
        [tt_order] => 1 
       ) 
       [2] => stdClass Object 
        (
        [tag_id] => 5, 
        [tag_text] => Lawn, 
        [task_tag_id] => 5, 
        [task_task_id] => 10, 
        [tt_id] => 22, 
        [tt_order] => 2 
       ) 
      ) 
     ) 
    [1] => stdClass Object 
     (
     [task_id] => 11, 
     [task_text] => Unclog the sink drain, 
     [tags] => Array 
      (
       [0] => stdClass Object 
        (
        [tag_id] => 1, 
        [tag_text] => House, 
        [task_tag_id] => 1, 
        [task_task_id] => 11 
        [tt_id] => 30, 
        [tt_order] => 0 
       ), 
       [1] => stdClass Object 
        (
        [tag_id] => 3, 
        [tag_text] => Kitchen, 
        [task_tag_id] => 3, 
        [task_task_id] => 11, 
        [tt_id] => 31, 
        [tt_order] => 1 
       ) 
      ) 
     ) 
    [2] => stdClass Object 
     (
     [task_id] => 12, 
     [task_text] => Purchase new microwave, 
     [tags] => Array 
      (
       [0] => stdClass Object 
        (
        [tag_id] => 4, 
        [tag_text] => Apartment 1, 
        [task_tag_id] => 4, 
        [task_task_id] => 12 
        [tt_id] => 40, 
        [tt_order] => 0 
       ), 
       [1] => stdClass Object 
        (
        [tag_id] => 3, 
        [tag_text] => Kitchen, 
        [task_tag_id] => 3, 
        [task_task_id] => 12, 
        [tt_id] => 41, 
        [tt_order] => 1 
       ) 
      ) 
     ) 
) 

我希望能够通过标签的任务，这样的排序：

Array 
(
[0] => stdClass Object 
     (
     [tag_id] => 1, 
     [task_text] => House, 
     [child_tags] => Array 
      (
       [0] => stdClass Object 
        (
        [tag_id] => 2, 
        [tag_text] => Yard, 
        [task_tag_id] => 2, 
        [task_task_id] => 10, 
        [tt_id] => 21, 
        [child_tags] => Array 
         (
          [1] => stdClass Object 
           (
            [tag_id] => 5, 
            [tag_text] => Lawn, 
            [task_tag_id] => 5, 
            [task_task_id] => 10, 
            [tt_id] => 22, 
            [task_id] => 10, 
            [task_text] => Mow and fertilize 
          ) 
         ), 
       [1] => stdClass Object 
       (
        [tag_id] => 3, 
        [tag_text] => Kitchen, 
        [task_tag_id] => 3, 
        [task_task_id] => 11, 
        [tt_id] => 31, 
        [task_id] => 11, 
        [task_text] => Unclog the sink drain, 
       ) 
      ) 
     ) 
[1] => stdClass Object 
     (
     [tag_id] => 4, 
     [tag_text] => Apartment 1, 
     [child_tags] => Array 
      (
       [0] => stdClass Object 
        (
        [tag_id] => 2, 
        [tag_text] => Kitchen, 
        [task_tag_id] => 2, 
        [task_task_id] => 10, 
        [tt_id] => 21, 
        [task_id] => 12, 
        [task_text] => Purchase new microwave 
       ) 
      ) 
     ) 
) 

最终我所拍摄的是：

<ul> 
    <lh>House</lh> 
    <li> 
     <ul> 
     <lh>Kitchen</lh> 
     <li>Unclog the sink drain</li> 
     </ul> 
    </li> 
    <li> 
     <ul> 
     <lh>Yard</lh> 
      <li> 
      <ul> 
       <lh>Lawn</lh> 
       <li>Mow and fertilize</li> 
      </ul> 
      </li> 
     </ul> 
    </li> 
</ul> 
<ul> 
    <lh>Apartment 1</lh> 
    <li> 
     <ul> 
     <lh>Kitchen</lh> 
     <li>Purchase new microwave</li> 
     </ul> 
    </li> 
</ul> 

该数据库正是你想象的。任务表和具有n2n关系表的标签表。

似乎没有一种简单的方法来循环执行任务和标签，以这种方式进行排序。我应该尝试不同的方法吗？这是愚蠢的吗？

Answer 1

如果你可以在分层结构中构造你的数组（例如拉动你所有的标签并将任务分配给每个标签的嵌套数组），类似于你的最终结构的未分类版本，你可以尝试两个递归循环：

1. 拿1级项目，排序（）这个
2. 对于每一个1级的项目，把它打印出来，并整理了2级
3. 重复，直到下降到最低水平