What are some advanced examples of Firestore security rules?

What are some advanced examples of Firestore security rules?

Advanced Firestore security rules can include role-based access control, data validation, and conditional access. Would you like to see specific examples?

Yes, please provide an example of role-based access control.

Sure! You can define roles in your Firestore rules like this:

service cloud.firestore {
  match /databases/{database}/documents {
    match /users/{userId} {
      allow read, write: if request.auth != null && request.auth.uid == userId;
    }
    match /admin/{document=**} {
      allow read, write: if request.auth.token.role == 'admin';
    }
  }
}

This allows users to access their own data and restricts admin access to users with the 'admin' role.

What about data validation in Firestore rules?

Data validation can be done using the validate function. For example:

match /posts/{postId} {
  allow create: if request.resource.data.keys().hasAll(['title', 'content']) && request.resource.data.title is string;
}

This ensures that every post has a title and content, and that the title is a string.

Can you explain conditional access in Firestore rules?

Certainly! Conditional access allows you to set rules based on certain conditions. For example:

match /projects/{projectId} {
  allow read: if request.auth != null && request.auth.token.isMember == true;
}

This rule allows read access only if the user is authenticated and is a member of the project.