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[英]NG2-Charts Template parse errors: Can't bind to 'datasets' since it isn't a known property of 'canvas'
[英]NG2-Charts Can't bind to 'datasets' since it isn't a known property of 'canvas'
我正在嘗試使用 NG2-Charts 的基本示例( http://valor-software.com/ng2-charts/ )
我復制粘貼了 HTML 部分
<div style="display: block">
<canvas baseChart
[datasets]="barChartData"
[labels]="barChartLabels"
[options]="barChartOptions"
[legend]="barChartLegend"
[chartType]="barChartType"
(chartHover)="chartHovered($event)"
(chartClick)="chartClicked($event)"></canvas>
</div>
和打字稿部分
private barChartOptions: any = {
scaleShowVerticalLines: false,
responsive: true
};
private barChartLabels: string[] = ['2006', '2007', '2008', '2009', '2010', '2011', '2012'];
private barChartType: string = 'bar';
private barChartLegend: boolean = true;
private barChartData: any[] = [
{ data: [65, 59, 80, 81, 56, 55, 40], label: 'Series A' },
{ data: [28, 48, 40, 19, 86, 27, 90], label: 'Series B' }
];
// events
private chartClicked(e: any): void {
console.log(e);
}
private chartHovered(e: any): void {
console.log(e);
}
我運行npm install ng2-charts --save
, npm install chart.js --save
和npm install chart.js --save
typings install dt~chart.js --save --global
我還在我的 vendor.ts 文件中導入了 chart.js
import 'chart.js';
我的依賴:
{
"@angular/common": "^2.0.0",
"@angular/compiler": "2.0.0",
"@angular/core": "2.0.0",
"@angular/forms": "2.0.0",
"@angular/http": "2.0.0",
"@angular/platform-browser": "2.0.0",
"@angular/platform-browser-dynamic": "2.0.0",
"@angular/router": "3.0.0",
"angular2-jwt": "^0.1.18",
"chart.js": "^2.3.0",
"core-js": "^2.4.0",
"json-loader": "^0.5.4",
"moment": "^2.14.1",
"ng2-charts": "^1.4.0",
"reflect-metadata": "0.1.2",
"rxjs": "5.0.0-beta.11",
"zone.js": "^0.6.23"
}
這是錯誤
Unhandled Promise rejection: Template parse errors:
Can't bind to 'datasets' since it isn't a known property of 'canvas'. ("iuminfooneoptionsTwo">
<div style="display: block">
<canvas baseChart [ERROR ->][datasets]="barChartData" [labels]="barChartLabels" [options]="barChartOptions" [legend]="barChartLeg"): PlayerprofileComponent@39:34
Can't bind to 'labels' since it isn't a known property of 'canvas'. (" <div style="display: block">
<canvas baseChart [datasets]="barChartData" [ERROR ->][labels]="barChartLabels" [options]="barChartOptions" [legend]="barChartLegend" [chartType]="barChart"): PlayerprofileComponent@39:60
Can't bind to 'options' since it isn't a known property of 'canvas'. ("lay: block">
<canvas baseChart [datasets]="barChartData" [labels]="barChartLabels" [ERROR ->][options]="barChartOptions" [legend]="barChartLegend" [chartType]="barChartType" (chartHover)="chartH"): PlayerprofileComponent@39:86
Can't bind to 'legend' since it isn't a known property of 'canvas'. (" <canvas baseChart [datasets]="barChartData" [labels]="barChartLabels" [options]="barChartOptions" [ERROR ->][legend]="barChartLegend" [chartType]="barChartType" (chartHover)="chartHovered($event)" (chartClick)"): PlayerprofileComponent@39:114
Can't bind to 'chartType' since it isn't a known property of 'canvas'. ("ets]="barChartData" [labels]="barChartLabels" [options]="barChartOptions" [legend]="barChartLegend" [ERROR ->][chartType]="barChartType" (chartHover)="chartHovered($event)" (chartClick)="chartClicked($event)">
"): PlayerprofileComponent@39:140 ; Zone: <root> ; Task: Promise.then ; Value: Error: Template parse errors:(…) Error: Template parse errors:
Can't bind to 'datasets' since it isn't a known property of 'canvas'. ("iuminfooneoptionsTwo">
<div style="display: block">
<canvas baseChart [ERROR ->][datasets]="barChartData" [labels]="barChartLabels" [options]="barChartOptions" [legend]="barChartLeg"): PlayerprofileComponent@39:34
Can't bind to 'labels' since it isn't a known property of 'canvas'. (" <div style="display: block">
<canvas baseChart [datasets]="barChartData" [ERROR ->][labels]="barChartLabels" [options]="barChartOptions" [legend]="barChartLegend" [chartType]="barChart"): PlayerprofileComponent@39:60
Can't bind to 'options' since it isn't a known property of 'canvas'. ("lay: block">
<canvas baseChart [datasets]="barChartData" [labels]="barChartLabels" [ERROR ->][options]="barChartOptions" [legend]="barChartLegend" [chartType]="barChartType" (chartHover)="chartH"): PlayerprofileComponent@39:86
Can't bind to 'legend' since it isn't a known property of 'canvas'. (" <canvas baseChart [datasets]="barChartData" [labels]="barChartLabels" [options]="barChartOptions" [ERROR ->][legend]="barChartLegend" [chartType]="barChartType" (chartHover)="chartHovered($event)" (chartClick)"): PlayerprofileComponent@39:114
Can't bind to 'chartType' since it isn't a known property of 'canvas'. ("ets]="barChartData" [labels]="barChartLabels" [options]="barChartOptions" [legend]="barChartLegend" [ERROR ->][chartType]="barChartType" (chartHover)="chartHovered($event)" (chartClick)="chartClicked($event)">
"): PlayerprofileComponent@39:140
at TemplateParser.parse (eval at <anonymous> (http://localhost:8080/vendor.js:623:1), <anonymous>:133:19)
at RuntimeCompiler._compileTemplate (eval at <anonymous> (http://localhost:8080/vendor.js:2103:1), <anonymous>:244:51)
at eval (eval at <anonymous> (http://localhost:8080/vendor.js:2103:1), <anonymous>:167:83)
at Set.forEach (native)
at compile (eval at <anonymous> (http://localhost:8080/vendor.js:2103:1), <anonymous>:167:47)
at ZoneDelegate.invoke (eval at <anonymous> (http://localhost:8080/polyfills.js:4105:1), <anonymous>:192:28)
at Zone.run (eval at <anonymous> (http://localhost:8080/polyfills.js:4105:1), <anonymous>:85:43)
at eval (eval at <anonymous> (http://localhost:8080/polyfills.js:4105:1), <anonymous>:451:57)
at ZoneDelegate.invokeTask (eval at <anonymous> (http://localhost:8080/polyfills.js:4105:1), <anonymous>:225:37)
at Zone.runTask (eval at <anonymous> (http://localhost:8080/polyfills.js:4105:1), <anonymous>:125:47)
at drainMicroTaskQueue (eval at <anonymous> (http://localhost:8080/polyfills.js:4105:1), <anonymous>:357:35)
NG2-Charts 網站說我需要將其包含在 HTML 中
<script src="node_modules/chart.js/src/chart.js"></script>
但我認為那是不正確的,因為該聲明如何在高效的縮小/構建的應用程序中工作? 我還認為我的 webpack 導入語句已經解決了這個問題? 我四處搜索,但遺憾的是只在 NG2 Charts 上找到了一些 Angular 2 Beta 版本的內容。
有沒有人知道如何解決這個問題?
感謝和干杯,拉斐爾·希佩
嘗試像這樣在 app.module.ts 中導入 ChartsModule -
import { ChartsModule } from 'ng2-charts/ng2-charts';
imports: [
.....
ChartsModule
.....
]
我有同樣的問題。 我在 github 上發現你只需要在子模塊中插入 ChartsModule 。 首先你添加app.module.ts
和,在我的例子中, reports.module.ts
。
我正在使用 ng2-charts + Angular 7 + Ionic 4,我花了幾個小時尋找解決方案。 這最終對我有用(當然,在遵循初始步驟之后,例如安裝 ng2-charts 和 charts.js)。 只需在以下文件中導入 ChartsModule:
app.module.ts
import { ChartsModule } from 'ng2-charts';
...
imports: [ChartsModule]
yourPage.module.ts
import { ChartsModule } from 'ng2-charts';
@NgModule({
imports: [
IonicModule,
CommonModule,
FormsModule,
RouterModule.forChild([{ path: '', component: YourPagePage }]),
**ChartsModule**
]
})
我也試圖在 yourPage.page.ts 中導入它,但解決方案是在 yourPage.module.ts 中導入它!
試試看。
我正在使用ng2-chart@3.0.0-rc.2
看起來屬性chartType
現在被稱為type
所以它應該是這樣的:
<canvas
style="display: block;background-color: #3a3939;"
width="600"
height="300"
id="canvas"
#myCanvas
baseChart
[type]="lineChartType"
[datasets]="lineChartData"
[labels]="lineChartLabels"
[options]="mfChartOptions"
[legend]="lineChartLegend">
</canvas>
不要在 App Module 中導入 ChartsModule,而是將其導入到您正在使用的內部模塊中。 例如,主頁模塊(如果在主頁中使用圖表)。
如果您正在使用共享模塊,您還需要從那里導出 ChartsModule,以使其可用於使用您的共享模塊的所有組件。
// Simplified module only showing what's important for ChartsModule
import { NgModule } from '@angular/core';
import { ChartsModule } from 'ng2-charts';
@NgModule({
declarations: [],
imports: [ChartsModule],
exports: [ChartsModule]
})
export class SharedModule {
static forRoot(): ModuleWithProviders<SharedModule> {
return {
ngModule: SharedModule
};
}
}
如果您的組件是在app.module.ts
以外的另一個模塊中聲明的,您只需執行以下操作:
app.module.ts
import { ChartsModule } from 'ng2-charts';
...
@NgModule({
...
imports: [
...
ChartsModule,
...
]
})
export class AppModule{ }
module-where-your-component-is-declared.module.ts
import { ChartsModule } from 'ng2-charts';
...
@NgModule({
declarations: [YourComponent],
imports: [
...
ChartsModule,
...
],
...
})
export class ModuleWhereYourComponentIsDeclared { }
就我而言,這與在多個模塊中包含ChartsModule
或導出它無關。
我創建了一個使用ng-chart
的圖表組件,然后發現我需要它的另一個版本。 所以我復制了組件,重命名了類和模板文件,但是忘記更新@Component
裝飾器中的templateUrl
屬性。
有兩個不同的組件引用同一個模板文件給出了完全相同的錯誤:
無法綁定到“數據集”,因為它不是“畫布”的已知屬性
一旦我將新組件更改為使用正確的 HTML 模板,錯誤就解決了。
僅供參考,我引用了ChartsModule
,如我的圖表組件模塊中@sanket 的回答所示以及引用它們的頁面組件的模塊 (因此在AppModule
不需要它)。
原因可能是:您直接從子組件/模塊使用 Ng2Charts。
解決方案:您還必須在父模塊上導入 Ng2Charts。 (導入 Ng2Charts [ng2-charts],到你的父子模塊)
祝大家修好。
謝謝你。 馬瓊·維勒加斯
在我的情況下,我不得不改變我的導入方式和我的 html 文件標簽的一些變化:
圖表組件.ts
import {Component} from '@angular/core';
import {CHART_DIRECTIVES} from 'ng2-charts/ng2-charts';
@Component({
selector: 'chart-balance',
template: require('./templates/chart-balance.template'),
styles: [`.chart {display: block; width: 100%;}`],
directives: [CHART_DIRECTIVES]
})
export class ChartBalanceComponent {
public barChartOptions:any = {
scaleShowVerticalLines: false,
responsive: true,
scales: {
yAxes: [{
ticks: {
beginAtZero: true,
callback: label => `${label.toLocaleString()}`
}
}]
}
};
public barChartLabels:string[] = ['2014', '2015', '2016'];
public barChartType:string = 'bar';
public barChartLegend:boolean = true;
public barChartData:any[] = [
{data: [32131, 3432, 543], label:'Test 1'},
{data: [54353, 432, 768], label:'Test 2'}
];
// events
public chartClicked(e:any):void {
console.log(e);
}
public chartHovered(e:any):void {
console.log(e);
}
}
這是我所做的另一個更改:
注意 --> 基礎圖表類 =“圖表” ...
圖表平衡模板
<base-chart class="chart"
[datasets]="barChartData"
[labels]="barChartLabels"
[options]="barChartOptions"
[legend]="barChartLegend"
[chartType]="barChartType"
(chartHover)="chartHovered($event)"
(chartClick)="chartClicked($event)"></base-chart>
ng2-圖表
export * from './components/charts/charts';
declare var _default: {
directives: any[][];
};
export default _default;
圖表
import { OnDestroy, OnInit, OnChanges, EventEmitter, ElementRef } from '@angular/core';
export declare class BaseChartComponent implements OnDestroy, OnChanges, OnInit {
static defaultColors: Array<number[]>;
data: number[] | Array<number[]>;
datasets: any[];
labels: Array<any>;
options: any;
chartType: string;
colors: Array<any>;
legend: boolean;
chartClick: EventEmitter<any>;
chartHover: EventEmitter<any>;
private ctx;
private cvs;
private parent;
private chart;
private initFlag;
private element;
constructor(element: ElementRef);
ngOnInit(): any;
ngOnChanges(): any;
ngOnDestroy(): any;
getChartBuilder(ctx: any): any;
private refresh();
}
export interface Color {
backgroundColor?: string | string[];
borderWidth?: number | number[];
borderColor?: string | string[];
borderCapStyle?: string;
borderDash?: number[];
borderDashOffset?: number;
borderJoinStyle?: string;
pointBorderColor?: string | string[];
pointBackgroundColor?: string | string[];
pointBorderWidth?: number | number[];
pointRadius?: number | number[];
pointHoverRadius?: number | number[];
pointHitRadius?: number | number[];
pointHoverBackgroundColor?: string | string[];
pointHoverBorderColor?: string | string[];
pointHoverBorderWidth?: number | number[];
pointStyle?: string | string[];
hoverBackgroundColor?: string | string[];
hoverBorderColor?: string | string[];
hoverBorderWidth?: number;
}
export interface Colors extends Color {
data?: number[];
label?: string;
}
export declare const CHART_DIRECTIVES: Array<any>;
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