Angular动态菜单生成：基于配置的递归组件实现

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

// 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: '', // 注意：原数据中这里是'icoon'，应修正为'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', // 注意：选择器名称将用于递归调用
  templateUrl: './menu.component.html',
  styleUrls: ['./menu.component.css'],
})
export class MenuComponent implements OnInit {
  @Input()
  level: number = 0; // 当前菜单层级，默认为0

  @Input()
  data!: MenuItem[]; // 当前层级的菜单数据

  collapseTrigger: string | undefined; // 用于动态设置折叠触发器属性

  ngOnInit(): void {
    // 根据层级添加不同的逻辑，例如设置折叠触发器类型
    switch (this.level) {
      case 0:
        this.collapseTrigger = 'primary'; // 主菜单项的折叠触发器
        break;
      case 1:
        this.collapseTrigger = 'secondary'; // 二级菜单项的折叠触发器
        break;
      // 可以根据需要添加更多层级的逻辑
    }
  }
}

<!-- src/app/components/menu/menu.component.html -->
<ul class="flex flex-col pl-0 mb-0 list-none" [ngClass]="{ 'ml-6': level > 0 }">
  <!-- 遍历当前层级的菜单项 -->
  <li
    *ngFor="let item of data"
    class="w-full"
    [ngClass]="{ 'mt-0.5': level === 0, 'ml-5.4': level > 0 }"
  >
    <!-- 菜单项链接 -->
    <a
      [attr.active_primary]="item.link === 'your_primary_active_logic'"
      [attr.active_page]="item.link === 'your_page_active_logic'"
      [attr.collapse_trigger]="item.subpages && item.subpages.length > 0 ? collapseTrigger : null"
      [href]="item.link === '#' ? 'javascript:;' : 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 bg-blue-500/30 px-4 font-semibold text-slate-700 transition-colors dark:text-white dark:opacity-80"
      [ngClass]="{
        'bg-transparent pr-4 font-medium text-slate-800/50 dark:text-white dark:opacity-60': 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"
      >
        <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>

    <!-- 如果存在子菜单，则递归渲染 -->
    <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" <!-- 动态ID，避免冲突 -->
    >
      <!-- 递归调用自身组件，传入子菜单数据并将层级加1 -->
      <app-menu [data]="item.subpages" [level]="level + 1"></app-menu>
    </div>
  </li>
</ul>