修复：新增开放平台时，未勾选"设为默认"选项时报错的问题

app/admin/model/Platform.php

@@ -34,7 +34,7 @@ class Platform extends PlatformModel
     public static function add($data)
     {
         try {
-            if ($data['is_default']) {
+            if (isset($data['is_default']) && $data['is_default'] == 1) {
                 self::where('is_default', 1)->update(['is_default' => 0]);
             }
             self::create($data);

front/src/views/platform/modules/CreateForm.vue

@@ -51,7 +51,7 @@
           <a-input v-decorator="['third_secret']"/>
         </a-form-item>
         <a-form-item label="设为默认">
-          <a-switch v-decorator="['is_default', { valuePropName: 'checked' }]"/>
+          <a-switch v-decorator="['is_default', { valuePropName: 'checked', initialValue: true}]"/>
         </a-form-item>
       </a-form>
     </a-spin>