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application/common/logic/FileCateLogic.php

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+<?php
+// +----------------------------------------------------------------------
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+// +----------------------------------------------------------------------
+// | 欢迎阅读学习系统程序代码，建议反馈是我们前进的动力
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+// | gitee下载：https://gitee.com/likeshop_gitee
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+// | 访问手册：http://doc.likeshop.cn
+// | 微信公众号：likeshop技术社区
+// | likeshop团队 版权所有 拥有最终解释权
+// +----------------------------------------------------------------------
+// | author: likeshopTeam
+// +----------------------------------------------------------------------
+
+
+namespace app\common\logic;
+
+
+use think\Db;
+
+class FileCateLogic
+{
+
+    /**
+     * Desc: 详情
+     * @param $id
+     * @return array|\PDOStatement|string|\think\Model|null
+     */
+    public static function info($id)
+    {
+        return Db::name('file_cate')->where(['id' => $id])->find();
+    }
+
+    /**
+     * Desc: 添加分类
+     * @param $post
+     * @return bool
+     */
+    public static function add($post)
+    {
+        $level = 0;
+
+        if ($post['pid']) {
+            $level = Db::name('file_cate')
+                ->where(['id' => $post['pid']])
+                ->where(['del' => 0])
+                ->value('level');
+        }
+
+        $data = [
+            'name' => $post['name'],
+            'pid' => $post['pid'],
+            'sort' => $post['sort'],
+            'level' => $level + 1,
+            'create_time' => time(),
+            'type' => 1
+        ];
+        Db::name('file_cate')->insert($data);
+        return true;
+    }
+
+    /**
+     * Desc: 编辑分类
+     * @param $post
+     * @return bool
+     */
+    public static function edit($post)
+    {
+        $level = 0;
+        $data = [
+            'pid' => $post['pid'],
+            'name' => $post['name'],
+            'sort' => $post['sort'],
+            'update_time' => time(),
+        ];
+
+        if ($post['pid']) {
+            $level = Db::name('file_cate')
+                ->where(['id' => $post['pid']])
+                ->where(['del' => 0])
+                ->value('level');
+        }
+
+        $data['level'] = $level + 1;
+
+        Db::name('file_cate')->where('id', $post['id'])->update($data);
+        return true;
+    }
+
+
+    /**
+     * Desc: 删除
+     * @param $id
+     * @return int|string
+     */
+    public static function del($id)
+    {
+        $data = [
+            'del' => 1,
+            'update_time' => time(),
+        ];
+        return Db::name('file_cate')->where(['del' => 0, 'id' => $id])->update($data);
+    }
+
+
+    /**
+     * Desc: 树形结构
+     * @return array
+     */
+    public static function cateTree()
+    {
+        $lists = Db::name('file_cate')
+            ->where(['del' => 0, 'type'=>1])
+            ->order('sort')
+            ->select();
+
+        $tree = self::cateListToTree($lists, 0);
+        $all = [
+            'id' => 0,
+            'field' => 'all',
+            'title' => '全部',
+            'children' => [],
+        ];
+        array_unshift($tree,$all);
+        return $tree;
+    }
+
+
+    public static function cateListToTree($lists, $pid = 0)
+    {
+        $tree = [];
+        foreach ($lists as $k => $v) {
+            if ($v['pid'] == $pid) {
+                $temp['id'] = $v['id'];
+                $temp['field'] = 'id';
+                $temp['title'] = self::handleFileName($v['name'], 4);
+                $temp['children'] = self::cateListToTree($lists, $v['id']);
+                $temp['spread'] = true;
+                $tree[] = $temp;
+            }
+        }
+        return $tree;
+    }
+
+
+    /**
+     * Desc: 下拉框树状结构
+     * @return array
+     */
+    public static function categoryToSelect()
+    {
+        $lists = Db::name('file_cate')
+            ->where(['del' => 0])
+            ->order('sort')
+            ->select();
+
+        $tree = [];
+        foreach ($lists as $val) {
+
+            if ($val['pid'] != 0) {
+                continue;
+            }
+
+            $tree[$val['id']] = "|----" . $val['name'];
+            foreach ($lists as $val2) {
+                if ($val2['pid'] == $val['id']) {
+                    $tree[$val2['id']] = "|--------" . $val2['name'];
+                }
+            }
+        }
+        return $tree;
+    }
+
+    //分类名超出隐藏
+    public static function handleFileName($str, $length)
+    {
+        if (mb_strlen($str) > $length) {
+            return mb_substr($str,0, $length) . '..';
+        }
+        return $str;
+    }
+
+}