fix: mobile 批量购买提交bug

app/index/lang/en-us/validate.php

@@ -9,6 +9,7 @@ return [
     '姓名不能超过:rule个字符' => 'Name cannot exceed :rule characters',
     '电话号码不能为空' => 'Phone Number is required',
     '电话号码不能超过:rule个字符' => 'Phone number cannot exceed :rule characters',
+    '感兴趣的产品种类不能为空' => 'Interested product categories is required',
     '感兴趣的产品种类不能超过:rule个字符' => 'Interested product categories cannot exceed :rule characters',
     '邮箱不能为空' => 'Email is required',
     '邮箱格式不正确' => 'Email format is incorrect',

app/index/validate/ContactUsBulkBuyValidate.php

@@ -20,7 +20,7 @@ class ContactUsBulkBuyValidate extends Validate
         'last_name'  => 'require|max:64',
         'email'      => 'require|email|max:128',
         'phone'      => 'max:32',
-        'interested' => 'max:255',
+        'interested' => 'require|max:255',
         'message'    => 'require|max:1024',
     ];
 
@@ -43,6 +43,7 @@ class ContactUsBulkBuyValidate extends Validate
         'email.email'        => '邮箱格式不正确',
         'email.max'          => '邮箱不能超过:rule个字符',
         'phone.max'          => '电话号码不能超过:rule个字符',
+        'interested.require' => '感兴趣的产品种类不能为空',
         'interested.max'     => '感兴趣的产品种类不能超过:rule个字符',
         'message.require'    => '留言内容不能为空',
         'message.max'        => '留言内容不能超过:rule个字符',