diff --git a/blog/laravel/index.md b/blog/laravel/index.md
index 39ef81cfb198d1b17d604dd45a7830d748b9a6d7..40bd19ae01c00912a0c2968916e70d851c917c05 100644
--- a/blog/laravel/index.md
+++ b/blog/laravel/index.md
@@ -48,5 +48,9 @@ dev:
 
 [模型的关联写入](/blog/laravel/model-relation-write.md)
 
+[模型多对多的关联写入](/blog/laravel/model-relation-write2.md)
 
-https://www.bilibili.com/video/BV1gE411j78F?p=32&spm_id_from=pageDriver&vd_source=efbb4dc944fa761b6e016ce2ca5933da
\ No newline at end of file
+[请求和依赖注入](/blog/laravel/request.md)
+
+
+https://www.bilibili.com/video/BV1gE411j78F?p=34&spm_id_from=pageDriver&vd_source=efbb4dc944fa761b6e016ce2ca5933da
\ No newline at end of file
diff --git a/blog/laravel/model-relation-write2.md b/blog/laravel/model-relation-write2.md
new file mode 100644
index 0000000000000000000000000000000000000000..3aecb7b3ae99585e0f6ecc7f240802655667b47a
--- /dev/null
+++ b/blog/laravel/model-relation-write2.md
@@ -0,0 +1,134 @@
+# 模型多对多的关联写入
+
+```php
+
+class User extends Model
+{
+    protected $table = 'user';
+
+    //多对多关联
+    public function roles()
+    {
+        return $this->belongsToMany(Role::class, 'user_role', 'user_id', 'role_id');
+    }
+}
+
+class Role extends Model
+{
+    protected $table = 'role';
+}
+```
+
+多对多的新增:
+
+```php
+// 得到要添加权限的用户
+$user = User::find(1); 
+// 得到权限的 id,比如超级管理员 
+$roleId = 1; 
+// 设置成超级管理员 
+$user->roles()->attach($roleId);
+```
+
+```sql
+select * from `user` where `user`.`id` = ? limit 1  
+-- [1]
+
+insert into `user_role` (`role_id`, `user_id`) values (?, ?)  
+-- [1,1]  
+```
+
+给中间表附加detail字段的数据，可以使用第二参数
+
+```php
+$user = User::find(1); 
+
+$user->roles()->attach(1, ['detail'=> '备注']);
+```
+
+```sql
+select * from `user` where `user`.`id` = ? limit 1  
+-- [1]  
+
+insert into `user_role` (`detail`, `role_id`, `user_id`) values (?, ?, ?)  
+-- ["备注",1,1]  
+
+```
+
+移出某个用户的角色权限
+```php
+// 删除一个角色权限 
+$user->roles()->detach(1);
+
+// PS:如果不指定中间表 id，那么就移出这个用户的所有权限角色;
+```
+```sql
+select * from `user` where `user`.`id` = ? limit 1  
+-- [1]
+
+delete from `user_role` where `user_role`.`user_id` = ? and `user_role`.`role_id` in (?)  
+-- [1,1]  
+```
+
+批量处理
+
+```php
+// 这里传递的是角色权限表的 ID
+$user->roles()->attach([1,2,3]); 
+
+$user->roles()->detach([1,2,3]);
+```
+
+```sql
+select * from `user` where `user`.`id` = ? limit 1  
+-- [1] 
+
+insert into `user_role` (`role_id`, `user_id`) values (?, ?), (?, ?), (?, ?)  
+-- [1,1,2,1,3,1] 
+```
+
+```sql
+sql: select * from `user` where `user`.`id` = ? limit 1  
+-- [1]  
+
+delete from `user_role` where `user_role`.`user_id` = ? and `user_role`.`role_id` in (?, ?, ?)  
+-- [1,1,2,3]  
+```
+
+同步关联，已存在不在新增
+
+```php
+$user->roles()->sync([1,2,3])
+```
+
+```sql
+select * from `user` where `user`.`id` = ? limit 1  
+-- [1]  
+
+select * from `user_role` where `user_role`.`user_id` = ?  
+-- [1]  
+
+insert into `user_role` (`role_id`, `user_id`) values (?, ?)  
+-- [1,1]  
+
+insert into `user_role` (`role_id`, `user_id`) values (?, ?)  
+-- [2,1]  
+
+insert into `user_role` (`role_id`, `user_id`) values (?, ?)  
+-- [3,1]  
+```
+
+更新指定roleId的额外字段
+
+// 更新中间表的额外字段 
+```php
+$user->role()->updateExistingPivot(1, ['detail'=>'喀']);
+```
+
+```sql
+select * from `user` where `user`.`id` = ? limit 1  
+-- [1]  
+update `user_role` set `detail` = ? where `user_role`.`user_id` = ? and `role_id` in (?)  
+-- ["喀",1,1]  
+```
+
diff --git a/blog/laravel/request.md b/blog/laravel/request.md
new file mode 100644
index 0000000000000000000000000000000000000000..dcc6a84db88dbf7d7ff7eb6194ae97cdbc14eb92
--- /dev/null
+++ b/blog/laravel/request.md
@@ -0,0 +1,50 @@
+# 请求和依赖注入
+
+```php
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+
+class TaskController extends Controller
+{
+    // 自动得到 Request 对象，这个就是注入
+    public function index(Request $request)
+    {
+        return [
+            // 请求参数
+            'name'=> $request->input('name'),
+            // 全部请求参数
+            'all'=> $request->all(),
+            // 请求路径
+            'uri'=> $request->path(),
+            'url'=> $request->url(),
+            'fullUrl'=> $request->fullUrl(),
+            // 判断HTTP请求的方式
+            'isGet'=> $request->isMethod('GET'),
+            // 判断当前的uri是否匹配
+            'isTask'=> $request->is('task/*'),
+        ];
+    }
+}
+```
+
+请求地址：
+```
+http://127.0.0.1:8000/task?name=Tom&age=23
+```
+```json
+{
+    "name": "Tom",
+    "all": {
+        "name": "Tom",
+        "age": "23"
+    },
+    "uri": "task",
+    "url": "http://127.0.0.1:8000/task",
+    "fullUrl": "http://127.0.0.1:8000/task?age=23&name=Tom",
+    "isGet": true,
+    "isTask": false
+}
+```
\ No newline at end of file
diff --git a/index.html b/index.html
index 8509fc6cafd2f4be388f467abd6362d50bc7bc09..9ddb68a1d3d84e5bd3b1fc52d789377066b047e4 100644
--- a/index.html
+++ b/index.html
@@ -25,7 +25,7 @@
         }
 
         .sidebar ul li a {
-            font-size: 16px;
+            font-size: 14px;
         }
 
         :root {