feature: new send mail

app/Http/Requests/Admin/UserSendMail.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Http\Requests\Admin;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class UserSendMail extends FormRequest
+{
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'subject' => 'required',
+            'content' => 'required',
+        ];
+    }
+
+    public function messages()
+    {
+        return [
+            'subject.required' => '主题不能为空',
+            'content.required' => '发送内容不能为空'
+        ];
+    }
+}