ulthon_information/app/admin/controller/Post.php

<?php

declare(strict_types=1);

namespace app\admin\controller;

use app\model\Category;
use app\model\Post as ModelPost;
use app\model\PostCategory;
use app\model\PostTag;
use app\model\Tag;
use think\facade\Route;
use think\facade\View;
use think\Request;

class Post extends Common
{
    /**
     * 显示资源列表
     *
     * @return \think\Response
     */
    public function index()
    {
        //

        $list = ModelPost::with(['categorys.category', 'tags.tag'])
            ->where('type', $this->request->param('type', 1))
            ->order('id desc')
            ->paginate();

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

        return View::fetch();
    }

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

        return View::fetch();
    }

    /**
     * 保存新建的资源
     *
     * @param  \think\Request  $request
     * @return \think\Response
     */
    public function save(Request $request)
    {
        //
        $post_data = $request->post();

        $post_data['uid'] = uniqid();

        $categorys = [];
        $tags = [];
        if (isset($post_data['categorys'])) {
            $categorys = $post_data['categorys'];
            unset($post_data['categorys']);
        }
        if (isset($post_data['tags'])) {
            $tags = $post_data['tags'];
            unset($post_data['tags']);
        }

        $model_post = ModelPost::create($post_data);

        foreach ($categorys as $category) {
            PostCategory::create([
                'post_id' => $model_post->id,
                'category_id' => $category
            ]);
        }
        foreach ($tags as $tag) {
            PostTag::create([
                'post_id' => $model_post->id,
                'tag_id' => $tag
            ]);
        }

        return $this->success('添加成功', url('index', ['type' => $this->request->param('type')]));
    }

    /**
     * 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)
    {
        //

        $model_post = ModelPost::find($id);


        View::assign('post', $model_post);

        return View::fetch();
    }

    public function editContent($id)
    {
        $model_post = ModelPost::find($id);


        View::assign('post', $model_post);
        return View::fetch();
    }

    /**
     * 保存更新的资源
     *
     * @param  \think\Request  $request
     * @param  int  $id
     * @return \think\Response
     */
    public function update(Request $request, $id)
    {
        //
        $post_data = $request->post();

        $model_post = ModelPost::find($id);

        $categorys = [];
        $tags = [];
        if (isset($post_data['categorys'])) {
            $categorys = $post_data['categorys'];
            unset($post_data['categorys']);

            $old_category_list = PostCategory::where('post_id', $id)->select();
            $old_category_id_list = array_column((array)$old_category_list, 'id');

            // 旧的有新的没有
            foreach ($old_category_list as $model_category) {
                if (!in_array($model_category->id, $categorys)) {
                    $model_category->delete();
                }
            }

            // 旧的没有新的有
            foreach ($categorys as $category) {
                if (!in_array($category, $old_category_id_list)) {

                    PostCategory::create([
                        'post_id' => $model_post->id,
                        'category_id' => $category
                    ]);
                }
            }
        }
        if (isset($post_data['tags'])) {
            $tags = $post_data['tags'];
            unset($post_data['tags']);

            $old_tag_list = PostTag::where('post_id', $id)->select();
            $old_tag_id_list = array_column((array)$old_tag_list, 'id');

            foreach ($old_tag_list as $model_tag) {
                if (!in_array($model_tag->id, $tags)) {
                    $model_tag->delete();
                }
            }

            foreach ($tags as $tag) {
                if (!in_array($tag, $old_tag_id_list)) {

                    PostTag::create([
                        'post_id' => $model_post->id,
                        'tag_id' => $tag
                    ]);
                }
            }
        }

        $model_post->save($post_data);




        return $this->success('保存成功', url('index', ['type' => $model_post->getData('type')]));
    }

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

        $model_post = ModelPost::find($id);

        $model_post->delete();

        PostCategory::where('post_id', $id)->delete();

        PostTag::where('post_id', $id)->delete();

        return json_message();
    }
}