这是我的最终目标:
我正在尝试从JSON文件呈现输入字段。这是一个示例字符串:
{ "id": 1, "value": "The answer to life is: (INPUT FIELD HERE WITH ngModel). More content..." }
(在没有Stack删除的情况下无法输入输入字段,但是输入字段的输入当然会不正确)
现在,我的确使输入字段与innerHTML一起显示,并使用安全管道清理HTML,但是ngModel被忽略。当我控制台注销表单结果时,没有2种方式发生绑定。我以为也许我需要在加载视图后重新渲染字段,但是我不确定如何做到这一点。其他事物((模糊))也将被完全忽略。
我真的希望有人知道如何做到这一点。我的JSON文件将只有一个值,其中包含许多HTML标记和多个输入字段。
我的项目是ionic3应用程序。
答案 0 :(得分:0)
编辑后的帖子
角度组件,指令,事件和属性绑定仅适用于静态添加到组件模板的HTML。
使用[innerHTML] =“ ...”可以将HTML添加到DOM中,但是Angular不会关心它包含的HTML,除了清理。
最好的选择是在运行时使用组件模板编译HTML。
话虽如此,我已经按照本文末尾提到的参考文献创建了一个演示应用程序。这将满足您的要求
https://stackblitz.com/edit/dynami-template-ionic
下面的代码
home.ts
import {Compiler, Component, NgModule, OnInit, ViewChild,
ViewContainerRef} from '@angular/core'
import {BrowserModule} from '@angular/platform-browser'
import {FormsModule} from '@angular/forms';
@Component({
selector: 'my-app',
templateUrl: './app.component.html'
})
export class App implements OnInit {
@ViewChild('container', { read: ViewContainerRef }) container: ViewContainerRef;
constructor(private compiler: Compiler) {}
section={}
ngOnInit() {
this.addComponent(`<p>Sed ut perspiciatis unde omnis <input type="text" [(ngModel)]="section.answer1" name="answer1"/> sit voluptatem accusantium doloremque laudantium.</p><p>Totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt <input type="text" [(ngModel)]="section.answer2" name="answer2"/>`,
{
section:this.section,
increaseCounter: function () {
this.counter++;
}
}
);
}
submitAnswers(answers){
console.log(answers);
}
private addComponent(template: string, properties: any = {}) {
@Component({template})
class TemplateComponent {}
@NgModule({imports: [ FormsModule ],declarations: [TemplateComponent]})
class TemplateModule {}
const mod = this.compiler.compileModuleAndAllComponentsSync(TemplateModule);
const factory = mod.componentFactories.find((comp) =>
comp.componentType === TemplateComponent
);
const component = this.container.createComponent(factory);
Object.assign(component.instance, properties);
// If properties are changed at a later stage, the change detection
// may need to be triggered manually:
// component.changeDetectorRef.detectChanges();
}
}
home.html
<ion-header>
<ion-navbar>
<ion-title>Home</ion-title>
</ion-navbar>
</ion-header>
<ion-content padding>
<h1>Dynamic template:</h1>
<h2>Workbook</h2>
<form (ngSubmit)="submitAnswers(section)">
<div #container></div>
<h3>This input below is hard coded in the view and works perfectly. Inputs from string are ignored.</h3>
<input type="text" [(ngModel)]="section.answer3" name="answer3">
<br />
<p><em>** Answers are logged in console **</em></p>
<button ion-button type="submit" block>Submit Answers</button>
</form>
</ion-content>
裁判:
How can I use/create dynamic template to compile dynamic Component with Angular 2.0?