我在使用NgSemanticModule的子模块时遇到问题。该模块本身无需子模块组件模板中的NgSemantic标签即可工作。尝试在我的子模块内使用NgSemantig组件失败。如果我在AppComponent模板中使用HeaderComponent模板,则可以使用相同的代码。如何在标头模块级别导入NgSemantic模块?
标题模块:
import { NgModule } from '@angular/core';
import { HeaderComponent } from "./header.component";
import { NgSemanticModule } from "ng-semantic";
@NgModule({
declarations: [
HeaderComponent
],
imports: [
NgSemanticModule
],
providers: [],
exports:[
HeaderComponent
]
})
export class HeaderModule { }
标头组件:
import { Component } from '@angular/core';
@Component({
selector: 'app-header',
templateUrl: './header.component.html',
styleUrls: ['./header.component.css']
})
export class HeaderComponent{}
标题模板:
<sm-menu title="Angular2" class="inverted teal" logo="/assets/images/semantic.png">
<a sm-item *ngFor="let item of items" [icon]="item.icon">{{item?.title}}</a>
<sm-menu class="menu right secondary">
<a sm-item href="#/elements/menu"
image="http://semantic-ui.com/images/avatar/small/stevie.jpg">Elliot Fu</a>
<a sm-item icon="sidebar big"></a>
我的应用程序模块:
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';
import { AppComponent } from './app.component';
import { NgSemanticModule } from "ng-semantic";
import { HeaderModule } from "./header/";
@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
FormsModule,
HttpModule,
NgSemanticModule,
HeaderModule
],
providers: [],
bootstrap: [ AppComponent ]
})
export class AppModule {}
应用组件:
import { Component } from '@angular/core';
@Component({
selector: 'app-root',
template: '<app-header></app-header>',
styleUrls: ['./app.component.css']
})
export class AppComponent {}
例外:
unhandled Promise rejection: Template parse errors:
Can't bind to 'ngForOf' since it isn't a known property of 'a'. ("<sm-menu title="Angular2" class="inverted teal" logo="/assets/images/semantic.png">
<a sm-item [ERROR ->]*ngFor="let item of items" [icon]="item.icon"> {{item?.title}}</a>
您应该将CommonModule
内部导入HeaderModule
。该模块包含来自的通用指令angular2
(如*ngFor
)。
import { NgModule } from "@angular/core";
import { CommonModule } from "@angular/common";
import { HeaderComponent } from "./header.component";
import { NgSemanticModule } from "ng-semantic";
@NgModule({
declarations: [
HeaderComponent
],
imports: [
NgSemanticModule,
CommonModule
],
providers: [
],
exports:[
HeaderComponent
]
})
export class HeaderModule {}
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