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

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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 { }

error position of my code

我的问题 . 为什么此代码无法解析此组件 .

1 回答

  • 6

    从服务器加载数据时,您将 string 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:

    entry-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-code-grid-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];
           }
         });
    

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