我想创建一个与图表相关的模块并将其写在其他地方。
模块声明的源代码如下。
图表.模块.ts
import { NgModule, ModuleWithProviders } from '@angular/core';
import { CommonModule } from '@angular/common';
import { ChartsModule } from 'ng2-charts'
import { CLineChartComponent } from './cline-chart/cline-chart.component';
import { DoughnutChartComponent } from './doughnut-chart/doughnut-chart.component';
@NgModule({
imports: [
CommonModule,
ChartsModule
],
declarations: [
CLineChartComponent,
DoughnutChartComponent
],
exports: [
CLineChartComponent,
DoughnutChartComponent
]
})
export class CustomChartModule {
static forRoot(): ModuleWithProviders {
return {
ngModule: CustomChartModule,
providers: []
}
}
}
我尝试仅使用另一个模块 forRoot 函数来加载它。
使用forRoot函数加载模块的源码是:
仪表板.module.ts
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { CommonModule } from '@angular/common';
import { CustomChartModule } from '@Library/chart.module';
@NgModule({
imports: [
CommonModule,
FormsModule,
CustomChartModule.forRoot()
],
declarations: [
],
exports: [
]
})
export class DashboardRootModule { }
但是,当我这样使用它时,出现错误。
错误:模板解析错误:“cline-chart”不是已知元素:
当我尝试从与 Dashboard.root.modules 位于同一目录中的组件中使用 CLineChartComponent 时,出现错误。
为什么会出现这个错误?
附:我附加 clinechart.component.ts 源代码。
源码太长,所以我删除了与Option相关的部分。
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'cline-chart',
templateUrl: './cline-chart.component.html',
styleUrls: ['./cline-chart.component.css'],
})
export class CLineChartComponent implements OnInit {
constructor() { }
ngOnInit() {
}
showFlag(flag:boolean){
this.isLoad = flag;
}
setCLineChartData(dataSet:Array<any>,legendName:string,titleName:string){
//this funciton is Set Data
}
public width: number = 230;
public heigth: number = 100;
public lineChartOptions: any = {
//this Object is Chart Option
};
public lineChartColors: Array<any> = [
//this Array is Defined Line color
];
// events
public chartClicked(e: any): void {
console.log(e);
}
public chartHovered(e: any): void {
console.log(e);
}
}
app.module.ts
import { DashboardModule } from './dashboard/dashboard.module';
@NgModule({
declarations: [
//Declare
],
imports: [
DashboardModule,
//Import another
],
providers: [
//Porvider Anoter
],
bootstrap: [AppComponent]
})
export class AppModule { }
仪表板.module.ts
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { CommonModule } from '@angular/common';
import { DashboardComponent } from './dashboard.component';
import { DashboardRoutingModule } from './dashboard-routing.module';
import { DashboardRootComponent } from './dashboard-root/dashboard-root.component';
import { BapIframeModule } from './../shared/bap-iframe/bap-iframe.module';
import { DashboardRootModule } from './dashboard-root/dashboard-root.module'
@NgModule({
imports: [
DashboardRootModule,
CommonModule,
FormsModule,
DashboardRoutingModule,
CoreModule.forRoot(),
BapIframeModule.forRoot()
],
declarations: [
DashboardComponent,
DashboardRootComponent
],
exports: [
DashboardComponent,
DashboardRootComponent
]
})
export class DashboardModule { }
仪表板.root.module.ts
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { CommonModule } from '@angular/common';
import { GridPanelComponent } from './grid-panel.component/grid-panel.component'
import { GridScrollComponent } from './grid-scroll.component/grid-scroll.component'
import { CustomChartModule } from '@Libarary/chart.module';
@NgModule({
imports: [
CommonModule,
FormsModule,
CustomChartModule.forRoot(),
],
declarations: [
GridPanelComponent,
GridScrollComponent
],
exports: [
GridPanelComponent,
GridScrollComponent
]
})
export class DashboardRootModule { }
最佳答案
您想在哪里使用图表组件?如果将其添加到 DashboardModule 中的组件,那么您应该从 DashboardRootModule 导出 CustomChartModule:
@NgModule({
...
exports: [
GridPanelComponent,
GridScrollComponent,
CustomChartModule.forRoot()
]
})
export class DashboardRootModule { }
如果将其添加到 AppModule 中的组件,那么您还应该从 DashboardModule 导出 DashboardRootModule:
@NgModule({
...
exports: [
DashboardComponent,
DashboardRootComponent,
DashboardRootModule
]
})
export class DashboardModule { }
顺便说一下,只有当您想提供带有或不带有提供程序的模块时,forRoot 模式才有意义。
关于Angular ngModules 导入错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51605284/