基于配置生成Angular动态导航菜单与递归组件实践

// src/app/interfaces/menu-item.interface.ts
export interface MenuItem {
  title: string; // 菜单项标题
  icon?: string; // 菜单项图标（可选）
  link: string; // 菜单项链接
  subpages?: MenuItem[]; // 子菜单项数组（可选，用于递归）
}

// src/app/config/employee-layout-sidebar.config.ts
import { MenuItem } from '../interfaces/menu-item.interface';

export const EmployeeLayoutSidebar: MenuItem[] = [
  {
    title: 'Startseite',
    icon: 'ni ni-tv-2',
    link: '#',
  },
  {
    title: 'Rechnungstool',
    icon: 'fas fa-money-bill-wave',
    link: '#',
  },
  {
    title: 'Formulare',
    icon: 'fas fa-file-alt',
    link: '#',
    subpages: [
      {
        title: 'Bewertungen',
        icon: 'caret',
        link: '#',
        subpages: [
          {
            title: 'Azubi',
            icon: '', // 示例中icoon拼写错误，修正为icon
            link: '#',
          },
        ],
      },
      {
        title: 'Bewerbung',
        icon: '',
        link: '#',
      },
    ],
  },
];

// src/app/components/menu/menu.component.ts
import { Component, Input, OnInit } from '@angular/core';
import { MenuItem } from '../../interfaces/menu-item.interface';

@Component({
  selector: 'app-menu', // 组件选择器，用于在父组件中引用
  templateUrl: './menu.component.html',
  styleUrls: ['./menu.component.css'],
})
export class MenuComponent implements OnInit {
  @Input() data!: MenuItem[]; // 接收当前层级的菜单项数组
  @Input() level: number = 0; // 接收当前菜单的层级深度，默认为0

  collapseTrigger: string | undefined; // 用于控制折叠/展开的属性

  ngOnInit(): void {
    // 根据层级深度设置不同的折叠触发器，可用于样式或行为区分
    switch (this.level) {
      case 0:
        this.collapseTrigger = 'primary'; // 主菜单项
        break;
      case 1:
        this.collapseTrigger = 'secondary'; // 二级菜单项
        break;
      // 可以根据需要添加更多层级的逻辑
      default:
        this.collapseTrigger = `level-${this.level}`;
        break;
    }
  }
}

<!-- src/app/components/menu/menu.component.html -->
<ul class="flex flex-col pl-0 mb-0 list-none" [ngClass]="{'ml-6': level > 0, 'flex-wrap': level > 0}">
  <li
    *ngFor="let item of data"
    class="w-full"
    [ngClass]="{ 'mt-0.5': level === 0 }"
  >
    <a
      [attr.active_primary]="item.link === 'your-active-link-logic'"
      [attr.active_page]="item.link === 'your-active-link-logic'"
      [attr.collapse_trigger]="collapseTrigger"
      [href]="item.link"
      class="ease-in-out text-sm leading-default py-2.7 my-0 mx-2 flex items-center whitespace-nowrap px-4 font-medium text-slate-500 shadow-none rounded-lg transition-colors dark:text-white dark:opacity-80"
      [ngClass]="{
        'bg-blue-500/30 px-4 font-semibold text-slate-700': item.link === 'your-active-link-logic',
        'ml-5.4 pl-4': level > 0,
        'after:ease-in-out after:font-awesome-5-free after:ml-auto after:inline-block after:font-bold after:text-slate-800/50 after:antialiased after:transition-all after:duration-200 after:content-[\'\f107\'] dark:after:text-white/50 dark:after:text-white': item.subpages && item.subpages.length > 0
      }"
    >
      <div
        class="stroke-none flex h-6 w-8 items-center justify-center rounded-lg bg-center fill-current p-2.5 text-center text-black"
        *ngIf="item.icon"
      >
        <i class="text-sm leading-normal {{ item.icon }} text-slate-700/80 dark:text-white"></i>
      </div>
      <span class="ml-1 duration-300 opacity-100 pointer-events-none ease">{{ item.title }}</span>
    </a>

    <!-- 如果有子页面，则递归调用自身组件 -->
    <div
      *ngIf="item.subpages && item.subpages.length > 0"
      class="h-auto overflow-hidden transition-all duration-200 ease-in-out max-h-0"
      [id]="'forms-' + item.title.replace(/\s/g, '-').toLowerCase()"
      role="region"
      [attr.aria-expanded]="false"
    >
      <app-menu [data]="item.subpages" [level]="level + 1"></app-menu>
    </div>
  </li>
</ul>

// src/app/app.component.ts
import { Component } from '@angular/core';
import { EmployeeLayoutSidebar } from './config/employee-layout-sidebar.config'; // 导入配置数据

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  menuData = EmployeeLayoutSidebar; // 将配置数据赋值给组件属性
}

<!-- src/app/app.component.html -->
<div class="sidebar">
  <app-menu [data]="menuData"></app-menu>
</div>