Angular 16中input无法绑定ngModel的问题求助

我使用Angular 16版本和VSCode开发，代码能正常运行，但Angular Language Service持续提示错误：

can't bind to 'ngModel' since it isn't a known property of 'input'

项目文件配置 #

app.module.ts（初始配置） #

import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { BrowserModule } from '@angular/platform-browser';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { HeaderComponent } from './components/header/header.component';
import { ProductsModule } from './modules/products/products.module';
import { SalesModule } from './modules/sales/sales.module';

@NgModule({
  declarations: [AppComponent, HeaderComponent],
  imports: [BrowserModule, AppRoutingModule, ProductsModule, SalesModule],
  bootstrap: [AppComponent]
})
export class AppModule { }

app-routing.module.ts #

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { NotFoundComponent } from './components/not-found/not-found.component';

const routes: Routes = [
  { path: '', redirectTo: '/products', pathMatch: 'full' },
  { path: 'sales', loadChildren: () => import('./modules/sales/sales.module').then(m => m.SalesModule) },
  { path: 'products', loadChildren: () => import('./modules/products/products.module').then(m => m.ProductsModule) },
  { path: '**', component: NotFoundComponent }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

sales.module.ts #

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { ReactiveFormsModule } from '@angular/forms';
import { SalesRoutingModule } from './sales-routing.module';
import { AddSaleComponent } from 'src/app/components/sales/add-sale/add-sale.component';
import { SalesService } from 'src/app/services/sales.service';
import { BrowserModule } from '@angular/platform-browser';

@NgModule({
  declarations: [
    AddSaleComponent
  ],
  imports: [
    BrowserModule,
    CommonModule,
    SalesRoutingModule,
    FormsModule, 
    ReactiveFormsModule
  ],
  providers: [SalesService]
})
export class SalesModule { }

sales-routing.module.ts #

import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { AddSaleComponent } from 'src/app/components/sales/add-sale/add-sale.component';

const routes: Routes = [
  {
    path: '',
    component: AddSaleComponent,
  },
];

@NgModule({
  imports: [RouterModule.forChild(routes)],
  exports: [RouterModule],
})
export class SalesRoutingModule {}

add-sale.component.html #

Favorite Color: <input type="text" [(ngModel)]="favoriteColor">

add-sale.component.ts #

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

@Component({
  selector: 'app-add-sale',
  templateUrl: './add-sale.component.html',
  styleUrls: ['./add-sale.component.scss'],
})
export class AddSaleComponent {
  favoriteColor = '';
  
}

已尝试的操作 #

• 移除app.module.ts中的ProductsModule和SalesModule，导入FormsModule，但问题仍存在。

解决建议 #

1. 移除子模块中的BrowserModule：
   懒加载子模块（如SalesModule）不应导入BrowserModule，该模块仅需在根模块AppModule中导入。将SalesModule的imports数组中的BrowserModule删除，保留CommonModule即可。修改后的SalesModule imports部分：

   imports: [
     CommonModule,
     SalesRoutingModule,
     FormsModule, 
     ReactiveFormsModule
   ]
   

2. 重启Angular Language Service：

   • 打开VSCode命令面板（Ctrl+Shift+P），执行Angular: Restart Angular Language Service
   • 若无效，直接重启VSCode，或删除项目根目录下的.angular缓存文件夹后重新打开项目。

3. 确认懒加载模块的导入逻辑：
   保持AppModule中不直接导入懒加载模块（如SalesModule、ProductsModule），由路由的loadChildren负责懒加载，避免模块重复导入冲突。

4. 检查组件声明唯一性：
   确保AddSaleComponent仅在SalesModule的declarations数组中声明，未在其他模块重复声明。

内容的提问来源于stack exchange，提问作者Farzan Najipour