如何在角度2中管理角色和權限

Question

嗨，我已經存儲了以下數據

"permission": {
            "1000": "CREATE_DISBMT_WORKFLOW",
            "1001": "EDIT_DISBMT_WORKFLOW",
            "1002": "EDIT_UPLOAD_PHOTO_DISBMT_WORKFLOW",
            "1003": "EDIT_UPLOAD_CONFIRMED_DISBMT_WORKFLOW",
            "1004": "EDIT_VERIFIED_DISBMT_WORKFLOW",
            "1005": "VIEW_DISBMT_WORKFLOW",
            "1006": "DELETE_DISBMT_WORKFLOW"        
        }

現在在本地存儲中，我想創建一個函數，如果它在上面的權限對象中存在，則應該在上面傳遞CREATE_DISBMT_WORKFLOW，該函數應該返回true，否則返回false

在Angular 2中這樣做的方式是什么

這是我的邏輯，如果它返回真實數據，將使用* ngIf等顯示。

Answer 1

如果您調整權限數據對象，使權限名稱是鍵而不是權限ID，則您的權限服務可能就這么簡單：

import { Injectable } from '@angular/core';

@Injectable()
export class PermissionsService {

  private permissions: any = {}

  constructor() { }

  setPermissions(permissions: any) : void {
    this.permissions = permissions;
  }

  canCurrentUser(permission: string) : boolean {
    return (permission in this.permissions);
  }

}

組態：

let permissions = {
    "CREATE_DISBMT_WORKFLOW":"1000",
    "EDIT_DISBMT_WORKFLOW":"1001",
    "EDIT_UPLOAD_PHOTO_DISBMT_WORKFLOW":"1002",
    "EDIT_UPLOAD_CONFIRMED_DISBMT_WORKFLOW":"1003",
    "EDIT_VERIFIED_DISBMT_WORKFLOW":"1004",
    "VIEW_DISBMT_WORKFLOW":"1005",
    "DELETE_DISBMT_WORKFLOW":"1006"
}
this.permissionsService.setPermissions(permissions);

采用：

let hasPermission = this.permissionsService.canCurrentUser("CREATE_DISBMT_WORKFLOW");

但是，如果您需要保留原始權限數據結構，則此canCurrentUser(permission)函數也將起作用（盡管可讀性較差）：

canCurrentUser(permission: string) {
  for (var key in this.permissions) {
    if (this.permissions.hasOwnProperty(key) && this.permissions[key] === permission) {
        return true;
    }
  }
  return false;
}

Answer 2

要為angular2應用程序管理權限和訪問控制，可以使用ng2-permission模塊。

將Ng2Permission導入到您應用的模塊中：

import { Ng2Permission } from 'angular2-permission';

@NgModule({
  imports: [
    Ng2Permission
  ]
})

您還可以使用PermissionService管理PermissionService 。 請參閱此鏈接： 管理權限 。

import { PermissionService } from 'angular2-permission';
//.
//.
//.
constructor(private _permissionService: PermissionService) { 

this._permissionService.define(['CREATE_DISBMT_WORKFLOW', 
    'EDIT_DISBMT_WORKFLOW', 'EDIT_UPLOAD_PHOTO_DISBMT_WORKFLOW', 
    'EDIT_UPLOAD_CONFIRMED_DISBMT_WORKFLOW', 'EDIT_VERIFIED_DISBMT_WORKFLOW', 
    'VIEW_DISBMT_WORKFLOW', 'DELETE_DISBMT_WORKFLOW']);

}

該模塊還包含兩個指令，用於控制視圖中的訪問。 例如，如果已經定義DELETE_DISBMT_WORKFLOW或在權限存儲中添加，將顯示刪除按鈕。

<button type="button" class="btn btn-danger btn-xs" [hasPermission]="['DELETE_DISBMT_WORKFLOW']">
  <span class="glyphicon glyphicon-trash" aria-hidden="true"></span>
  Delete
</button>

您可以從Ng2Permission模塊使用PermissionGuard，以保護路由。

import { PermissionGuard, IPermissionGuardModel } from 'angular2-permission';

const routes: Routes = [
    {
        path: 'users',
        component: UserListComponent,
        canActivate: [PermissionGuard],
        data: {
            Permission: {
                Only: ['GuestUser'],
                RedirectTo: '403'
            } as IPermissionGuardModel
        },
        children: []
    },
//.
//.
//.