找不到组件工厂.你有没有把它添加到@ NgModule.entryComponents？

Question

在使用带有angular4的ag-grid时,我遇到了以下错误消息.

我试图通过HTTP获取json后显示行数据.

this.gridOptions.api.setRowData(this.gridOptions.rowData);

但是我的代码在下面显示错误消息.

错误错误:找不到RedComponentComponent的组件工厂.你有没有把它添加到@ NgModule.entryComponents？

这是我的app模块代码.我已经设置为entryComponents了.

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';
import { AgGridModule} from "ag-grid-angular/main";

import { AppComponent } from './app.component';
import { MyGridApplicationComponent } from './my-grid-application/my-grid-application.component';
import { RedComponentComponent } from './red-component/red-component.component';

@NgModule({
  imports: [
    BrowserModule,
    AgGridModule.withComponents(
      [RedComponentComponent]
    ),
    FormsModule,
    HttpModule
  ],
  declarations: [
    AppComponent,
    MyGridApplicationComponent,
    RedComponentComponent
  ],
  entryComponents: [
    RedComponentComponent
  ],  
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

我的代码的错误位置

我的问题.为什么此代码无法解析此组件.

Answer 1

string从服务器加载数据时,您将传递给ComponentFactoryResolver,但它应该是组件类型.

header.json

{
  "headerName": "DetailCode",
  "field": "detailCode",
  "cellRendererFramework": "RedComponentComponent", // string
  "width":100
},

要解决它,我会创建入口组件映射,如:

入门components.ts

import { RedComponentComponent } from './red-component/red-component.component';

export const entryComponentsMap = {
  'RedComponentComponent': RedComponentComponent
};

然后将加载从json字符串映射到组件类

COMM-代码并网option.service.ts

private fetchColumnDefs() {
 console.log("fetchColumnDefs()");

 this.http.get(this.API_URI + "resident/header.json").subscribe(
   r => {
     this.gridOptions.columnDefs = r.json();
     this.gridOptions.columnDefs.forEach((x: any) => {
       if (x.cellRendererFramework) {
         x.cellRendererFramework = entryComponentsMap[x.cellRendererFramework];
       }
     });