first commit

app/admin/service/CustomersService.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace app\admin\service;
+
+use app\common\model\Customers as CustomersModel;
+use app\common\model\CustomerEmployees;
+
+class CustomersService
+{
+    public function selectCustomersWithEmployees()
+    {   
+        //with 预载入 ,解决N+1问题
+        $list = CustomersModel::with('employees')->select();
+        return $list;
+    }
+
+    public function addCustomer($companyName)
+    {
+        $id = CustomersModel::create([
+            'company_name' => $companyName
+        ]);
+        return $id;
+    }
+
+    public function addEmployee($empName, $Id)
+    {
+        $id = CustomersModel::where('id', $Id)->find()->employees()->save([
+            'employee_name'    => $empName
+        ]);
+        return $id;
+    }
+
+
+    public function deleteEmployee($empId)
+    {
+        $result = CustomerEmployees::destroy($empId);
+        return $result;  // 返回受影响的行数，删除一行就1,没有删除就是0
+    }
+
+    public function deleteCustomer($customerId)
+    {
+        // 删除客户单位会自动删除关联的员工（假设你在模型中设置了级联删除）
+        $result = CustomersModel::destroy($customerId);
+        return $result;  // 返回受影响的行数，删除一行就1,没有删除就是0
+    }
+
+
+}