Refine•2y ago

RBAC using casbin

I was implementing rbac in my refine+supabase application. In Casbin Model and Policies file, what is resources/ objects there.

kapa.ai•4/10/24, 6:52 AM

Hi @venom. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base.

kapa.ai•4/10/24, 6:52 AM

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In the context of Casbin and Role-Based Access Control (RBAC), resources or objects refer to the entities in your application that you want to control access to. These could be various parts of your application like pages, routes, or data entities.

In the Casbin model and policies file shared in the knowledge source (https://refine.dev/blog/refine-pixels-6#casbin-model-and-policies), the resources are represented by the

obj

obj

variable in the model definition.

Here's the model definition for reference:

In this model, is the request definition where is the subject (usually the user or role),

obj

obj

is the object or resource, and is the action. Casbin uses this model to scan the request for the subject, object, and action.

The policy adapter then holds instances of policies produced from

. The policies define what actions () a subject () can perform on a resource (

obj

obj

). For example, in the policy ,

admin

admin

is the subject,

users

users

is the resource, and

list

list

is the action. This policy allows an

admin

admin

list

list

users.

So, in your application, the resources or objects would be whatever entities you want to control access to, and you would define your Casbin model and policies accordingly.
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kapa.ai•4/10/24, 6:52 AM

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unique-blueOP•4/10/24, 6:53 AM

@kapa.ai where can i find objects in my application

kapa.ai•4/10/24, 6:53 AM

Let me check the knowledge base for you. One moment!

kapa.ai•4/10/24, 6:54 AM

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In a Refine application, objects or resources typically refer to the data entities that your application is built around. These are usually defined in the prop of the component in your

App.tsx

App.tsx

file.

For example, in a blog application, your resources might be and . In an e-commerce application, your resources might be ,

orders

orders

, and

customers

customers

.

Here's an example of how resources are defined in a Refine application:

In this example, and are the resources or objects in the application. The

list

list

create

create

, and

edit

edit

properties define the actions that can be performed on these resources, and the corresponding routes in the application.

You can find more examples in the knowledge sources (https://refine.dev/blog/refine-pixels-3#adding-resources-to-refine-, https://refine.dev/blog/refine-pixels-3#refine-s-resources-prop, https://refine.dev/blog/react-admin-frameworks-refine-vs-blitz-js#refine-5, https://refine.dev/blog/refine-react-invoice-generator-2#project-setup, https://refine.dev/blog/refine-react-invoice-generator-2#exploring-the-app, https://refine.dev/blog/react-crud-app-with-dynamic-form-ant-design#project-setup, https://refine.dev/docs/data/packages/supabase#adding-resources).
----------------------
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kapa.ai•4/10/24, 6:54 AM

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unique-blueOP•4/10/24, 6:55 AM

@kapa.ai ok so for the above posts and author resources, what will be the plicy file look like

kapa.ai•4/10/24, 6:55 AM

Let me check the knowledge base for you. One moment!

kapa.ai•4/10/24, 6:55 AM

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In the context of Casbin and your application with and resources, your policy file might look something like this:

In this example, the

admin

admin

role has permission to

list

list

create

create

edit

edit

, and

delete

delete

both and . The role can

list

list

create

create

, and

edit

edit

, but can only

list

list

.

The format of each line is , where

denotes a policy, is the subject (the role in this case),

obj

obj

is the object or resource, and is the action. The actions are separated by to indicate that any of these actions are allowed.

Please note that this is a basic example. The actual policies would depend on the specific access control requirements of your application. You might have more roles, more resources, and more specific actions. You might also have different policies for different instances of a resource, for example, based on who created a post.
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kapa.ai•4/10/24, 6:55 AM

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unique-blueOP•4/10/24, 6:58 AM

@kapa.ai why cant i see the options in my sidebar after implementing rbac

kapa.ai•4/10/24, 6:58 AM

Let me check the knowledge base for you. One moment!

kapa.ai•4/10/24, 6:59 AM

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There could be several reasons why you're not seeing the options in your sidebar after implementing Role-Based Access Control (RBAC). Here are a few possibilities:

Access Control Provider: The Access Control Provider is not correctly set up. Refine uses the Access Control Provider to determine which resources a user can access. If the provider is not correctly configured, some resources might not appear in the sidebar. You can check the Access Control Provider documentation (https://refine.dev/docs/guides-concepts/general-concepts#ui-integrations-1) for more information.
Access Control Points: Refine checks for access control at certain points in the application. For the sidebar, it checks with . If your access control policies do not allow the
```
list
```
```
list
```
action for a resource, that resource will not appear in the sidebar. You can check the List of Default Access Control Points documentation (https://refine.dev/docs/authorization/access-control-provider#list-of-default-access-control-points) for more information.
Resource Visibility: Resources have a or option that determines whether they appear in the sidebar. If this option is set to
```
false
```
```
false
```
or
```
true
```
```
true
```
respectively, the resource will not appear in the sidebar, regardless of the access control policies. You can check the Github Issue (closed): [FEAT] Add an option to hide the resource in the menu (https://github.com/refinedev/refine/issues/2388) for more information.
Bugs: There might be a bug in Refine or in your code. For example, there was a bug (https://github.com/refinedev/refine/issues/4852) where inaccessible resources still showed up on the sidebar. If you think you've encountered a bug, you can report it on the Refine Github repository (https://github.com/refinedev/refine/issues).

kapa.ai•4/10/24, 6:59 AM

If none of these possibilities solve your issue, you might want to ask for help on the Refine Discord server (ask-any-questionSide Menu Hide).
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Note: you can ask me a follow up question by @ mentioning me again

----------------------

kapa.ai•4/10/24, 6:59 AM

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