使用gridstack和angular2动态添加组件? jQuery $ .parseHTML不起作用 [英] Dynamic add component using gridstack and angular2? Jquery $.parseHTML does not work

问题描述

我有以下 jsfiddle

我希望能够将自定义组件粘贴到特定的网格中(例如")

现在没有Angular2，我只使用:

var el = $.parseHTML("<div><div class=\"grid-stack-item-content\" data-id=\""+id+"\"/><div/>");
this.grid.add_widget(el, 0, 0, 6, 5, true);

问题是，我不知道该如何做:

var el = $.parseAndCompileHTMLWithComponent("<div><div class=\"grid-stack-item-content\" data-id=\""+id+"\"/><fancy-button></fancy-button><div/>");
this.grid.add_widget(el, 0, 0, 6, 5, true);

在angular1中，我知道有一个编译器，但是在angular2中，没有这样的东西.

我的精美按钮组件非常简单，如下所示:

@Component({
  selector: 'fancy-button',
  template: `<button>clickme</button>`
})
export class FancyButton {}

如何动态添加花式按钮组件?

解决方案

动态添加fancy-button组件的简便方法如下:

1)将组件添加到模块的entryComponents阵列

@NgModule({
  imports:      [ BrowserModule ],
  declarations: [ AppComponent, GridStackComponent, FancyButtonComponent ],
  entryComponents: [ FancyButtonComponent ], // <== here
  bootstrap:    [ AppComponent ]
})
export class AppModule { }

2)从已编译的组件获取根节点

constructor(private vcRef: ViewContainerRef, private componentFactoryResolver: ComponentFactoryResolver) { }

getRootNodeFromParsedComponent(component) {
  const componentFactory = this.componentFactoryResolver.resolveComponentFactory(component);
  const ref = this.vcRef.createComponent(componentFactory, this.vcRef.length, this.vcRef.injector);
  const hostView = <EmbeddedViewRef<any>>ref.hostView;
  return hostView.rootNodes[0];
}

3)随处使用

const fancyBoxElement = this.getRootNodeFromParsedComponent(FancyBoxComponent);  
$('#someId').append(fancyBoxElement);

这是您的案例的 Plunker示例

如果您正在寻找更复杂的东西，那么有很多答案可以使用angular编译器来实现

• 动态加载现有组件Angular 2 Final Release
• 在Angular 2中相当于$ compile
• 我如何使用/创建动态模板以使用Angular 2.0编译动态组件?
• Angular 2.1.0创建子组件快速动态地
• 如何手动延迟加载模块?

I have the following jsfiddle

I want to be able to stick my custom component into a specific grid (e.g. "")

Right now without Angular2, I just use:

var el = $.parseHTML("<div><div class=\"grid-stack-item-content\" data-id=\""+id+"\"/><div/>");
this.grid.add_widget(el, 0, 0, 6, 5, true);

The issue is, I have no idea how I could do something like:

var el = $.parseAndCompileHTMLWithComponent("<div><div class=\"grid-stack-item-content\" data-id=\""+id+"\"/><fancy-button></fancy-button><div/>");
this.grid.add_widget(el, 0, 0, 6, 5, true);

In angular1, I know there is a compile, but in angular2, there is no such thing.

My fancy-button component is straightforward and is as follows:

@Component({
  selector: 'fancy-button',
  template: `<button>clickme</button>`
})
export class FancyButton {}

How can I dynamically add the fancy-button component?

解决方案

The easist way to add fancy-button component dynamically might be as follows:

1) Add component to entryComponents array of your module

@NgModule({
  imports:      [ BrowserModule ],
  declarations: [ AppComponent, GridStackComponent, FancyButtonComponent ],
  entryComponents: [ FancyButtonComponent ], // <== here
  bootstrap:    [ AppComponent ]
})
export class AppModule { }

2) Get root node from compiled component

constructor(private vcRef: ViewContainerRef, private componentFactoryResolver: ComponentFactoryResolver) { }

getRootNodeFromParsedComponent(component) {
  const componentFactory = this.componentFactoryResolver.resolveComponentFactory(component);
  const ref = this.vcRef.createComponent(componentFactory, this.vcRef.length, this.vcRef.injector);
  const hostView = <EmbeddedViewRef<any>>ref.hostView;
  return hostView.rootNodes[0];
}

3) Use it anywhere

const fancyBoxElement = this.getRootNodeFromParsedComponent(FancyBoxComponent);  
$('#someId').append(fancyBoxElement);

Here's Plunker Example for your case

If you're looking for something more complicated then there are a lot of answers where you can use angular compiler to do it working

• Load existing components dynamically Angular 2 Final Release
• Equivalent of $compile in Angular 2
• How can I use/create dynamic template to compile dynamic Component with Angular 2.0?
• Angular 2.1.0 create child component on the fly, dynamically
• How to manually lazy load a module?

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