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application/admin/validate/FileCate.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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+// | 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\admin\validate;
+
+use think\Db;
+use think\Validate;
+
+class FileCate extends Validate
+{
+
+    protected $rule = [
+        'id' => 'require',
+        'name' => 'require|checkName',
+        'pid' => 'checkAdd|checkEdit',
+        'sort' => 'require|integer'
+    ];
+
+    protected $message = [
+        'id.require' => 'id不可为空',
+        'name.require' => '分类名称不能为空！',
+        'name.unique' => '分类名称已存在',
+        'sort.require' => '请填写排序',
+        'sort.integer' => '请填写整数',
+    ];
+
+    protected function sceneAdd()
+    {
+        $this->remove('id')
+            ->remove('pid', 'checkEdit');
+    }
+
+    protected function sceneEdit()
+    {
+        $this->remove('pid', 'checkAdd')
+            ->append('pid', 'require');
+    }
+
+    protected function sceneDel()
+    {
+        $this->only(['id'])->append('id', 'checkCate');
+    }
+
+
+    protected function checkAdd($value, $rule, $data)
+    {
+        if ($value == 0) {
+            return true;
+        }
+
+        $where = [
+            ['id', '=', $value],
+            ['del', '=', 0],
+        ];
+
+        $cate = Db::name('file_cate')->where($where)->find();
+        if ($cate) {
+            if ($cate['level'] == 2) {
+                return '仅能添加二级分类';
+            }
+            if ($cate['name'] == $data['name']) {
+                return '同级已有相同分类存在';
+            }
+        }
+        return true;
+    }
+
+
+    public function checkEdit($value, $rule, $data)
+    {
+        $partner = Db::name('file_cate')->where(['id' => $value, 'del' => 0])->find();
+
+        $child = Db::name('file_cate')->where(['pid' => $data['id'], 'del' => 0])->find();
+
+        if ($child) {
+            return '当前分类下有子分类,请先调整该分类下的子分类';
+        }
+
+        if ($partner['level'] == 2) {
+            return '仅能添加二级分类';
+        }
+
+        if ($data['id'] == $value) {
+            return '上级分类不能是自己';
+        }
+        return true;
+    }
+
+
+    protected function checkCate($value, $rule, $data)
+    {
+        $file = Db::name('file')->where(['del' => 0, 'cate_id' => $value])->find();
+
+        if ($file) {
+            return '分类下有图片,不可删除';
+        }
+
+        $child = Db::name('file_cate')->where(['del' => 0, 'pid' => $value])->find();
+
+        if ($child) {
+            return '分类下有子分类,不可删除';
+        }
+
+        return true;
+    }
+
+
+    protected function checkName($value, $rule, $data)
+    {
+        $where= [];
+        if (!empty($data['id']) && $data['id'] != 0){
+            $where[] = ['id', '<>', $data['id']];
+        }
+
+        $check = Db::name('file_cate')
+            ->where(['name' => $value, 'del' => 0])
+            ->where($where)
+            ->find();
+
+        if ($check){
+            return '分类名称已存在';
+        }
+        return true;
+    }
+
+}