嗨,我存储了以下数据
"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"
}
现在在本地存储中,我想创建一个函数,我将传递CREATE_DISBMT_WORKFLOW如果它在上面的权限对象中,它应该返回 true 否则 false
在角度 2 中做到这一点的方法是什么
在这里,我的逻辑是,如果它返回真实数据,将使用 *ngIf 等显示。
如果您调整权限数据对象,使权限名称是键而不是权限 ID,则权限服务可以如此简单:
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);
}
}
配置:
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);
用:
let hasPermission = this.permissionsService.canCurrentUser("CREATE_DISBMT_WORKFLOW");
但是,如果您需要保留原始权限数据结构,则此canCurrentUser(permission)
函数也可以使用(尽管它的可读性较差(:
canCurrentUser(permission: string) {
for (var key in this.permissions) {
if (this.permissions.hasOwnProperty(key) && this.permissions[key] === permission) {
return true;
}
}
return false;
}
要管理angular2应用程序的权限和访问控制,可以使用ng2权限模块。
将Ng2Permission
导入到应用的模块中:
import { Ng2Permission } from 'angular2-permission';
@NgModule({
imports: [
Ng2Permission
]
})
您还可以使用 PermissionService
管理权限。 请参阅此链接:管理权限。
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']);
}
该模块还包含两个用于控制视图中访问的指令。例如,如果已定义DELETE_DISBMT_WORKFLOW
删除按钮或添加到权限存储中,则会显示删除按钮。
<button type="button" class="btn btn-danger btn-xs" [hasPermission]="['DELETE_DISBMT_WORKFLOW']">
<span class="glyphicon glyphicon-trash" aria-hidden="true"></span>
Delete
</button>
您可以从Ng2Permission
模块中使用权限保护,从而保护路由。
import { PermissionGuard, IPermissionGuardModel } from 'angular2-permission';
const routes: Routes = [
{
path: 'users',
component: UserListComponent,
canActivate: [PermissionGuard],
data: {
Permission: {
Only: ['GuestUser'],
RedirectTo: '403'
} as IPermissionGuardModel
},
children: []
},
//.
//.
//.