如何在 Laravel 中将部门显示为节点

Question

我有一个我 db 'departments' 的表。我希望它用 jstree 显示它。我有一个 parent_id，根节点为 0，另一个为 1。我在父节点和子节点中显示它们时遇到问题关系..这是我的代码和我尝试过的，但问题是它显示如下：

 - IT Department
     - IT Department
 - IT Department
     - IT Department

我想要这样的

 - IT Department
     - Research and development
 - Finance
     - Product development

---

    <ul>
    if({{ $department->parent_id }} == 0)
    {

      <li>{{ $department->name }}
        <ul>
          <li id="child_node_1">{{ $department->id }}</li>
          <li >{{ $department->name }}</li>
        </ul>
      </li>    
    }
    if({{ $department->parent_id }} == 1)
    {
      <li>{{ $department->name }}
      <ul>
          <li id="child_node_2">{{ $department->id }}</li>
          <li >{{ $department->name }}</li>
        </ul>
      </li>
    }

    </ul>

Answer 1

听起来您可能想使用 laravel 的 ORM 创建一个自引用关系。查看one to one relationship。

您完成的代码可能如下所示：

Department.php

class Department extends Eloquent {

    public function parents()
    {
        return $this->belongsTo('Department', 'parent_id');
    }

    public function children()
    {
        return $this->hasMany('Department', 'parent_id');
    }
}

department.blade.php

<li>{{ $parent->name }}
    <ul>
    @foreach($department->parents as $parent)
        <li id="child_node_1">{{ $parent->id }}</li>
        <li>{{ $parent->name }}</li>
    @endforeach
    </ul>
</li>