How to use ThinkPHP to implement user permissions

1. Introduction

In a Web application system, user rights management is an important part of system design. System administrators can control it through user rights management Page visibility and operability, controlling user access rights. User permissions are divided into the following aspects:

1. Page access permissions

2. Data access permissions

3. Operation permissions on data

2. The process of using ThinkPHP to implement user permissions

The following is the process of using ThinkPHP to implement user permissions:

1. Create a permission table

First we need to create a permission table in the database, which contains the following fields:

id int(11) 主键，自增
name varchar(255) 权限名
uri varchar(255) 资源路径
method varchar(255) 请求方法
pid int(11) 父级权限ID
status tinyint(4) 状态
createtime datetime 创建时间

2. Create a role table

Then we need to create a role table, which contains the following fields:

id int(11) 主键，自增
name varchar(255) 角色名
status tinyint(4) 状态
createtime datetime 创建时间

3. Create a user table

Then we need to create a user table, which contains the following fields:

id int(11) 主键，自增
username varchar(255) 用户名
password varchar(255) 密码
status tinyint(4) 状态
createtime datetime 创建时间

4. Create A user role association table

Then we need to create a user role association table, which contains the following fields:

id int(11) 主键，自增
user_id int(11) 用户ID
role_id int(11) 角色ID
status tinyint(4) 状态
createtime datetime 创建时间

5. Create a Role permission association table

Finally we need to create a role permission association table, which contains the following fields:

id int(11) 主键，自增
role_id int(11) 角色ID
permission_id int(11) 权限ID
status tinyint(4) 状态
createtime datetime 创建时间

6. Write permission verification Logic

After completing the above preparations, we can start writing permission verification logic. The specific steps are as follows:

(1) Obtain the role list of the current user

We can obtain all roles owned by the current user by querying the user role association table.

(2) Get the permission list of the current user

We can get all the permissions owned by the current user by querying the role permission association table.

(3) Determine whether the current request has permission to access

We can determine whether the URI and request method of the current request are in the current user's permission list. If they exist, it means that the current user has permission. Access the resource, otherwise there is no permission.

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