我需要创建一个条件,当用户没有权限(未登录)时可以看到该条件,但是我需要先检查该权限,因此当用户登录时,我将看不到内容
我正在使用JHipster项目中的'jhiHasAnyAuthority'指令。
<div *jhiHasAnyAuthority="''">This should appear.... when the VISITOR is NOT logged </div>
这在有权限的情况下有效(如果您想知道):
<div *jhiHasAnyAuthority="['ROLE_ADMIN', 'ROLE_USER']">This should appear.... when ADMIN or USER is logged </div>
<div *jhiHasAnyAuthority="'ROLE_ADMIN'">This should appear.... when ADMIN is logged </div>
所以我尝试了其他替代方法,例如:
<div *jhiHasAnyAuthority="''">This should appear.... when Blank is NOT logged </div>
但是它们不起作用!
注意:我不需要将文本放在普通的DIV中,因此,如果用户未登录,它将显示在屏幕上,因为在登录时也会出现。
谢谢
答案 0 :(得分:1)
您正在使用的* jhiHasAnyAuthority指令是JHipseter项目的一部分。
中找到如果您查看源代码,您会发现它不支持否定测试,并且我假设检查“ HasAnyAuthority”中是否为空或null的授权字符串与检查用户是否没有权限。
因此,您似乎无法使用此指令来测试是否缺少授权, 该指令也似乎不支持* ngIf那样的if / else语法。
我认为做您想要做的唯一方法是编写基于* jhiHasAnyAuthority的自定义指令,或者修改* jhiHasAnyAuthority以添加所需的行为。
在任何一种情况下,如果都能正常运行,最好向JHipster项目提交拉取请求。
答案 1 :(得分:0)
has-not-authority.directive.ts
中创建文件app\shared\auth
:import { Directive, Input, TemplateRef, ViewContainerRef } from '@angular/core';
import { AccountService } from 'app/core/auth/account.service';
/**
* @whatItDoes Conditionally includes an HTML element if current user has not any
* of the authorities passed as the `expression`.
*
* @howToUse
* ```
* <some-element *jhiHasNotAuthority="'ROLE_ADMIN'">...</some-element>
*
* <some-element *jhiHasNotAuthority="['ROLE_ADMIN', 'ROLE_USER']">...</some-element>
* ```
*/
@Directive({
selector: '[jhiHasNotAuthority]'
})
export class HasNotAuthorityDirective {
private authorities: string[];
constructor(private accountService: AccountService, private templateRef: TemplateRef<any>, private viewContainerRef: ViewContainerRef) {}
@Input()
set jhiHasNotAuthority(value: string | string[]) {
this.authorities = typeof value === 'string' ? [value] : value;
this.updateView();
// Get notified each time authentication state changes.
this.accountService.getAuthenticationState().subscribe(() => this.updateView());
}
private updateView(): void {
const hasAnyAuthority = this.accountService.hasAnyAuthority(this.authorities);
this.viewContainerRef.clear();
if (!hasAnyAuthority) {
this.viewContainerRef.createEmbeddedView(this.templateRef);
}
}
}
shared.module.ts
中的app\shared
文件:
import { NgModule } from '@angular/core';
import { YourAppSharedLibsModule } from './shared-libs.module';
import { FindLanguageFromKeyPipe } from './language/find-language-from-key.pipe';
import { JhiAlertComponent } from './alert/alert.component';
import { JhiAlertErrorComponent } from './alert/alert-error.component';
import { JhiLoginModalComponent } from './login/login.component';
import { HasAnyAuthorityDirective } from './auth/has-any-authority.directive';
import { HasNotAuthorityDirective } from './auth/has-not-authority.directive';
@NgModule({
imports: [YourAppSharedLibsModule],
declarations: [FindLanguageFromKeyPipe, JhiAlertComponent, JhiAlertErrorComponent, JhiLoginModalComponent, HasAnyAuthorityDirective, HasNotAuthorityDirective],
entryComponents: [JhiLoginModalComponent],
exports: [
YourAppSharedLibsModule,
FindLanguageFromKeyPipe,
JhiAlertComponent,
JhiAlertErrorComponent,
JhiLoginModalComponent,
HasAnyAuthorityDirective,
HasNotAuthorityDirective
]
})
export class YourAppSharedModule {}
这样,我们有效地复制了HasAnyAuthorityDirective
的内容,但是翻转了createEmbeddedView
方法调用的条件。
答案 2 :(得分:0)
您本可以尝试这种方式!
<div *jhiHasAnyAuthority="[]">This should appear... for No_Authority! </div>
PS:我尚未测试。