Feature Request / Guidance: Implementing Optional StartTime / EndTime for User Permission Grants #9831

2 Answer(s)

• 

  0

  AI-Bot created 21 days ago

  Support Team ABP Agent

  To implement time-based permission grants in your ABP application, you need to extend the permission system to include optional StartTime and EndTime for each user-permission grant. Below is a step-by-step guide and code samples for both the backend (C#) and Angular frontend.

  ---

  1. Backend: Extending Permission Grants

  a. Extend the Permission Grant Entity

  Create a new entity (e.g., UserTimeBasedPermission) to store user-permission grants with optional StartTime and EndTime.

  public class UserTimeBasedPermission : Entity<Guid>
  {
      public Guid UserId { get; set; }
      public string PermissionName { get; set; }
      public DateTime? StartTime { get; set; }
      public DateTime? EndTime { get; set; }
  }
  

  b. Create a Repository and Service

  Define a repository and service to manage these grants.

  public interface IUserTimeBasedPermissionRepository : IRepository<UserTimeBasedPermission, Guid>
  {
      Task<UserTimeBasedPermission> FindAsync(Guid userId, string permissionName);
  }
  
  public class UserTimeBasedPermissionRepository : EfCoreRepository<YourDbContext, UserTimeBasedPermission, Guid>, IUserTimeBasedPermissionRepository
  {
      public UserTimeBasedPermissionRepository(IDbContextProvider<YourDbContext> dbContextProvider)
          : base(dbContextProvider)
      {
      }
  
      public async Task<UserTimeBasedPermission> FindAsync(Guid userId, string permissionName)
      {
          return await (await GetDbSetAsync())
              .FirstOrDefaultAsync(x => x.UserId == userId && x.PermissionName == permissionName);
      }
  }
  

  c. Implement a Custom Permission Value Provider

  Create a custom PermissionValueProvider to check the time window.

  public class TimeBasedPermissionValueProvider : PermissionValueProvider
  {
      public const string ProviderName = "TimeBased";
      private readonly IUserTimeBasedPermissionRepository _repository;
      private readonly ICurrentUser _currentUser;
  
      public TimeBasedPermissionValueProvider(
          IUserTimeBasedPermissionRepository repository,
          ICurrentUser currentUser)
          : base(ProviderName)
      {
          _repository = repository;
          _currentUser = currentUser;
      }
  
      public override async Task<PermissionValueProviderGrantInfo> CheckAsync(PermissionValueCheckContext context)
      {
          if (!_currentUser.Id.HasValue)
              return PermissionValueProviderGrantInfo.Prohibited();
  
          var grant = await _repository.FindAsync(_currentUser.Id.Value, context.Permission.Name);
          if (grant == null)
              return PermissionValueProviderGrantInfo.Undefined();
  
          var now = DateTime.UtcNow;
          if (grant.StartTime.HasValue && now < grant.StartTime.Value)
              return PermissionValueProviderGrantInfo.Prohibited();
          if (grant.EndTime.HasValue && now > grant.EndTime.Value)
              return PermissionValueProviderGrantInfo.Prohibited();
  
          return PermissionValueProviderGrantInfo.Granted();
      }
  }
  

  Register your provider in the module:

  Configure<AbpPermissionOptions>(options =>
  {
      options.ValueProviders.Add<TimeBasedPermissionValueProvider>();
  });
  

  d. Grant/Update Permissions

  Create an application service to manage time-based grants:

  public class TimeBasedPermissionAppService : ApplicationService
  {
      private readonly IUserTimeBasedPermissionRepository _repository;
  
      public TimeBasedPermissionAppService(IUserTimeBasedPermissionRepository repository)
      {
          _repository = repository;
      }
  
      public async Task GrantAsync(Guid userId, string permissionName, DateTime? startTime, DateTime? endTime)
      {
          var grant = await _repository.FindAsync(userId, permissionName);
          if (grant == null)
          {
              grant = new UserTimeBasedPermission
              {
                  Id = Guid.NewGuid(),
                  UserId = userId,
                  PermissionName = permissionName,
                  StartTime = startTime,
                  EndTime = endTime
              };
              await _repository.InsertAsync(grant);
          }
          else
          {
              grant.StartTime = startTime;
              grant.EndTime = endTime;
              await _repository.UpdateAsync(grant);
          }
      }
  }
  

  ---

  2. Angular Frontend: Managing Time-Based Permissions

  a. Create a Service to Call the API

  @Injectable({ providedIn: 'root' })
  export class TimeBasedPermissionService {
    constructor(private http: HttpClient) {}
  
    grant(userId: string, permissionName: string, startTime?: string, endTime?: string): Observable<void> {
      return this.http.post<void>('/api/app/time-based-permission/grant', {
        userId,
        permissionName,
        startTime,
        endTime
      });
    }
  }
  

  b. Create a UI Component

  @Component({
    selector: 'app-time-based-permission',
    template: `
      <form (ngSubmit)="grant()">
        <input [(ngModel)]="userId" name="userId" placeholder="User ID" required />
        <input [(ngModel)]="permissionName" name="permissionName" placeholder="Permission Name" required />
        <input [(ngModel)]="startTime" name="startTime" type="datetime-local" placeholder="Start Time" />
        <input [(ngModel)]="endTime" name="endTime" type="datetime-local" placeholder="End Time" />
        <button type="submit">Grant</button>
      </form>
    `
  })
  export class TimeBasedPermissionComponent {
    userId = '';
    permissionName = '';
    startTime?: string;
    endTime?: string;
  
    constructor(private service: TimeBasedPermissionService) {}
  
    grant() {
      this.service.grant(this.userId, this.permissionName, this.startTime, this.endTime).subscribe(() => {
        alert('Permission granted!');
      });
    }
  }
  

  ---

  3. Usage

  • Use the Angular component to grant permissions with optional time windows.
  • The backend will enforce the time window on every permission check.

  ---

  4. Notes

  • This approach does not modify the built-in ABP permission management UI, but provides a custom API and UI for time-based grants.
  • You can further extend this to integrate with the ABP permission management module if needed.

  ---

  Sources:

  • ABP Permission System
  • ABP Permission Management Module

  ---

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• 

  0

  maliming created 21 days ago

  Support Team Fullstack Developer

  hi

  This isn't just a simple rewrite or replacement work. The entire permission management module has been almost completely restructured.

  You can download the source code of the permission management module to modify both the backend and the Angular frontend.

  You need to add two properties like this to the PermissionGrant entity and then check them.

  Thanks.

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