ulthon_information/app/index/controller/Index.php

<?php

namespace app\index\controller;

use app\model\Category;
use app\model\Post;
use app\model\PostCategory;
use think\facade\Session;
use think\facade\View;
use think\Request;

class Index extends Common
{
  /**
   * 显示资源列表
   *
   * @return \think\Response
   */
  public function index()
  {
    //
    $sub_category = [];
    $current_category = [];

    if (!empty($this->request->param('category_id'))) {
      $sub_category = Category::where('pid', $this->request->param('category_id'))->where('type', 3)->order('sort asc')->select();
      $current_category = Category::find($this->request->param('category_id'));
      if (empty($this->request->param('sub_category_id'))) {
        $categorys = [$this->request->param('category_id')];

        $categorys = array_merge($categorys, array_column((array)Category::getListLevel($this->request->param('category_id')), 3));

        $categorys_where = PostCategory::whereIn('category_id', $categorys);

        $model_post = Post::hasWhere('categorys', $categorys_where)->where('status', 1)->order('id desc');
      } else {
        $model_post = Post::hasWhere('categorys', ['category_id' => $this->request->param('sub_category_id')])->where('status', 1)->order('id desc');
      }
    } else {

      $model_post = Post::where('status', 1)->order('id desc');
    }

    $model_post->where('type', 3);

    $keywords = $this->request->param('keywords');

    if (!empty($keywords)) {
      $model_post->whereLike('title|desc', "%$keywords%");
    }


    $list_post = $model_post->paginate([
      'url' => 'Index/index',
      'query' => $this->request->get()
    ]);

    View::assign('current_category', $current_category);
    View::assign('sub_category', $sub_category);

    View::assign('list_post', $list_post);

    return View::fetch();
  }


  public function logout()
  {
    Session::clear();

    $back_url = $this->request->param('back_url','/');
    return $this->success('退出成功',$back_url);
  }

  /**
   * 显示创建资源表单页.
   *
   * @return \think\Response
   */
  public function create()
  {
    //
  }

  /**
   * 保存新建的资源
   *
   * @param  \think\Request  $request
   * @return \think\Response
   */
  public function save(Request $request)
  {
    //
  }

  /**
   * 显示指定的资源
   *
   * @param  int  $id
   * @return \think\Response
   */
  public function read($id)
  {
    //
  }

  /**
   * 显示编辑资源表单页.
   *
   * @param  int  $id
   * @return \think\Response
   */
  public function edit($id)
  {
    //
  }

  /**
   * 保存更新的资源
   *
   * @param  \think\Request  $request
   * @param  int  $id
   * @return \think\Response
   */
  public function update(Request $request, $id)
  {
    //
  }

  /**
   * 删除指定资源
   *
   * @param  int  $id
   * @return \think\Response
   */
  public function delete($id)
  {
    //
  }
}