Current Versions: Cordova: 6.3.1, Gulp CLI: 1.2.2, Ionic framework: 2.0.0-rc.0, Ionic CLI Version: 2.1.0
In my Ionic2 application, I have integrated the ng2-charts library.
When importing, be sure to use
import {ChartsModule} from "ng2-charts/components/charts/charts;"import {ChartsModule} from "ng2-charts";This is how my complete app.module.ts file looks like:
import { NgModule } from '@angular/core';
import { IonicApp, IonicModule } from 'ionic-angular';
import { ChartsModule } from 'ng2-charts/components/charts/charts';
import { MyApp } from './app.component';
import { EventsPage } from '../pages/events/events.component';
import { ChartComponent } from '../pages/chart/chart.component';
import { APICaller } from '../services/APICaller.service';
import { EventDetailComponent } from '../pages/event-detail/event-detail.component';
import { ParticipantDetail } from '../pages/participant-detail/participant-detail.component';
import { ParticipantFeedComponent } from '../pages/participant-feed/participant-feed.component';
@NgModule({
declarations: [
MyApp,
EventsPage,
EventDetailComponent,
ParticipantDetail,
ParticipantFeedComponent,
ChartComponent
],
imports: [
IonicModule.forRoot(MyApp),
ChartsModule
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
EventsPage,
EventDetailComponent,
ParticipantDetail,
ParticipantFeedComponent,
ChartComponent
],
providers: [APICaller]
})
export class AppModule { }
The ChartComponent code snippet:
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'pie-chart',
template: `
<base-chart
class="chart"
[datasets]="datasets"
[labels]="labels"
[options]="options"
[chartType]="'doughnut'">Titel?
</base-chart>
`
})
export class ChartComponent implements OnInit {
private datasets = [
{
label: "# of Votes",
data: [12,19,3,5,2,3]
}
];
private labels = ['Red', 'blue', 'yellow', 'green', 'purple', 'orange'];
private options = {
scales: {
yAxes: [{
beginAtZero: true
}]
}
};
constructor() {
}
ngOnInit() { }
}
I initially faced an issue with Chart.js, and upon further investigation, I discovered that referencing chart.js from node_modules was resulting in a 404 error when loaded into my index.html as
node_modules/chart.js/src/chart.jsTo resolve this, I tried downloading both Chart.bundle.min.js and Chart.js itself (placed in src/assets/js/...), but the problem persisted.
This particular issue was also discussed in ng2-charts\ng2-charts.js does not export ChartsModule's comment section. However, since no solution was provided and it wasn't the main query, I decided to post my own question.
Error encountered: This error message is hindering the loading of my app despite attempts to suppress it.
polyfills.js:3 Unhandled Promise rejection: Template parse errors:
Can't bind to 'datasets' since it isn't a known property of 'base-chart'.
1. If 'base-chart' is an Angular component and it has 'datasets' input, then verify that it is part of this module.
2. If 'base-chart' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA" to the '@NgModule.schemas' of this component to suppress this message.
("
class="chart"
[ERROR ->][datasets]="datasets"
[labels]="labels"
"): ChartComponent@4:4
Can't bind to 'labels' since it isn't a known property of 'base-chart'.
1. If 'base-chart' is an Angular component and it has 'labels' input, then verify that it is part of this module.
2. If 'base-chart' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA" to the '@NgModule.schemas' of this component to suppress this message.
("
[datasets]="datasets"
[ERROR ->][labels]="labels"
[options]="options"
"): ChartComponent@6:4