如何在Angular 9中通过变量加载动态模块? [英] How do you load a dynamic module by variable in Angular 9?

问题描述

我有以下代码可以动态加载模块:

I have the following code to load a module dynamically:

export class DynamicQuestionComponent {
    constructor(
        private componentFactoryResolver: ComponentFactoryResolver,
        private viewContainerRef: ViewContainerRef
    ) {}

    @Input() form: FormBase;
    @Input() formgroup: FormGroup;
    @ViewChild('content', { read: ViewContainerRef, static: true }) content: ViewContainerRef;

    @Input() set question(qvalue){
        if (qvalue){
            this.content.clear();
            var compath = `./${qvalue.qType}-question.component`;
            var testpath = './proto-question.component';
            import('./proto-question.component').then( dyncomp => {
                const component = this.viewContainerRef.createComponent(this.componentFactoryResolver.resolveComponentFactory(dyncomp.ProtoQuestionComponent));
                (<any>component).instance.form = this.form;
                (<any>component).instance.question = qvalue;
                (<any>component).instance.formgroup = this.formgroup;
                this.content.insert(component.hostView);
                component.injector.get(ChangeDetectorRef).markForCheck();
            })
        }
    }
}

当前，如果我在import函数中对组件路径进行硬编码，则这是唯一的方法.我希望能够将一个变量传递给导入函数，但是每次我切换到该变量时，都会得到可怕的找不到模块错误:

Currently, this is the only way it works, if I hard code the component path inside of the import function. I want to be able to pass a variable into the import function, but each time I switch to the variable, I get the dreaded cannot find module error:

ERROR Error: Uncaught (in promise): Error: Cannot find module './proto-question.component'

如您所见，我什至测试了一个与硬编码版本完全相同的变量，并且该变量也失败了.

As you can see, I even tested a variable that is exactly the same as the hardcoded version and that fails as well.

我觉得必须进行一些设置才能使其正常工作.

I feel like there must be a setting to make this work properly.

我正在使用:

Angular 9.1.9

Angular 9.1.9

Angular CLI 9.1.4

Angular CLI 9.1.4

假设我可以解决动态变量问题，那么我需要弄清楚如何将动态组件传递到resolveComponentFactory调用中.

Assuming I can get past the dynamic variable issue, then I need to figure out how to get pass in the dynamic component into the resolveComponentFactory call.

推荐答案

不幸的是，无法通过变量加载动态模块.我有类似的问题，我找不到解决方案. 动态导入具有动态路由的模块

Unfortunately loading a dynamic module by variable is not possible. I have similar issue and i can't find a solution. Dynamically import modules with dynamic routes

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