Mixing
why does this error/bug appears on angular
1
I am creating an angular project for front end with back and in python - flask, but, in the last time i tried to make a database appear the console shows a error... however the page updates correctly. Here are the code samples.
here is the place the error is shown but still shows the right data.
<div class=" w3-half" layout="column">
<div id="chartContainer2" style="margin-top:2%; height: 100%; width: 100%;">
<h3 class="titulo">YOUR TIME BANK: {{grafico.horas_aluno}}</h3>
<div style="display: block;">
<canvas baseChart
[data]="doughnutChartData2"
[labels]="doughnutChartLabels2"
[colors]="colors2"
[chartType]="doughnutChartType2"
[legend]="doughnutchartDisplay2"
(chartHover)="chartHovered2($event)"
(chartClick)="chartClicked2($event)"></canvas>
</div>
</div>
and here is the typescript that the call is refering to
import { Component, OnInit, NgModule } from '@angular/core';
import { GoogleChartsModule } from 'angular-google-charts';
import { HttpClient } from '@angular/common/http';
@Component({
selector: 'app-pagina',
templateUrl: './pagina.component.html',
styleUrls: ['./pagina.component.css']
})
@NgModule({
declarations: [PaginaComponent],
imports: [GoogleChartsModule.forRoot(),],
bootstrap: [PaginaComponent],
})
export class PaginaComponent implements OnInit {
serverData: JSON;
employeeData: JSON;
constructor(private http: HttpClient) { }
alunos:any;
grafico:JSON;
ngOnInit() {
this.http.get('http://127.0.0.1:5002/222222').subscribe(dados => {
console.log(dados)
this.alunos = [dados as JSON];
})
this.http.get('http://127.0.0.1:5002/chart/222222').subscribe(dados => {
console.log(dados)
this.grafico = dados as JSON;
})
}
public doughnutChartLabels2:string = ['Total time', 'Remaining time', 'Missing time'];
public colors2 = [{
backgroundColor: ['rgba(17, 168, 0, 1)','rgba(189, 0, 0, 1)', 'rgba(0, 72, 240, 1)'],
fillColor: 'rgba(47, 132, 71, 0.8)',
strokeColor: 'rgba(47, 132, 71, 0.8)',
highlightFill: 'rgba(47, 132, 71, 0.8)',
highlightStroke: 'rgba(47, 132, 71, 0.8)'
}];
public doughnutChartData2:number = [3,45,1];
public doughnutchartDisplay2 = false;
public titleChart2 = [{display:true}];
public doughnutChartType2:string = 'doughnut';
// events
public chartClicked2(e:any):void {
console.log(e);
}
public chartHovered2(e:any):void {
console.log(e);
}
}
and here is the error shown on console: ERROR TypeError: "_co.grafico is undefined"
javascript python angular typescript
asked Nov 20 '18 at 3:07
Astral ThinkerAstral Thinker
3010
add a comment |
1
I am creating an angular project for front end with back and in python - flask, but, in the last time i tried to make a database appear the console shows a error... however the page updates correctly. Here are the code samples.
here is the place the error is shown but still shows the right data.
<div class=" w3-half" layout="column">
<div id="chartContainer2" style="margin-top:2%; height: 100%; width: 100%;">
<h3 class="titulo">YOUR TIME BANK: {{grafico.horas_aluno}}</h3>
<div style="display: block;">
<canvas baseChart
[data]="doughnutChartData2"
[labels]="doughnutChartLabels2"
[colors]="colors2"
[chartType]="doughnutChartType2"
[legend]="doughnutchartDisplay2"
(chartHover)="chartHovered2($event)"
(chartClick)="chartClicked2($event)"></canvas>
</div>
</div>
and here is the typescript that the call is refering to
import { Component, OnInit, NgModule } from '@angular/core';
import { GoogleChartsModule } from 'angular-google-charts';
import { HttpClient } from '@angular/common/http';
@Component({
selector: 'app-pagina',
templateUrl: './pagina.component.html',
styleUrls: ['./pagina.component.css']
})
@NgModule({
declarations: [PaginaComponent],
imports: [GoogleChartsModule.forRoot(),],
bootstrap: [PaginaComponent],
})
export class PaginaComponent implements OnInit {
serverData: JSON;
employeeData: JSON;
constructor(private http: HttpClient) { }
alunos:any;
grafico:JSON;
ngOnInit() {
this.http.get('http://127.0.0.1:5002/222222').subscribe(dados => {
console.log(dados)
this.alunos = [dados as JSON];
})
this.http.get('http://127.0.0.1:5002/chart/222222').subscribe(dados => {
console.log(dados)
this.grafico = dados as JSON;
})
}
public doughnutChartLabels2:string = ['Total time', 'Remaining time', 'Missing time'];
public colors2 = [{
backgroundColor: ['rgba(17, 168, 0, 1)','rgba(189, 0, 0, 1)', 'rgba(0, 72, 240, 1)'],
fillColor: 'rgba(47, 132, 71, 0.8)',
strokeColor: 'rgba(47, 132, 71, 0.8)',
highlightFill: 'rgba(47, 132, 71, 0.8)',
highlightStroke: 'rgba(47, 132, 71, 0.8)'
}];
public doughnutChartData2:number = [3,45,1];
public doughnutchartDisplay2 = false;
public titleChart2 = [{display:true}];
public doughnutChartType2:string = 'doughnut';
// events
public chartClicked2(e:any):void {
console.log(e);
}
public chartHovered2(e:any):void {
console.log(e);
}
}
and here is the error shown on console: ERROR TypeError: "_co.grafico is undefined"
javascript python angular typescript
asked Nov 20 '18 at 3:07
Astral ThinkerAstral Thinker
3010
add a comment |
1
1
1
I am creating an angular project for front end with back and in python - flask, but, in the last time i tried to make a database appear the console shows a error... however the page updates correctly. Here are the code samples.
here is the place the error is shown but still shows the right data.
<div class=" w3-half" layout="column">
<div id="chartContainer2" style="margin-top:2%; height: 100%; width: 100%;">
<h3 class="titulo">YOUR TIME BANK: {{grafico.horas_aluno}}</h3>
<div style="display: block;">
<canvas baseChart
[data]="doughnutChartData2"
[labels]="doughnutChartLabels2"
[colors]="colors2"
[chartType]="doughnutChartType2"
[legend]="doughnutchartDisplay2"
(chartHover)="chartHovered2($event)"
(chartClick)="chartClicked2($event)"></canvas>
</div>
</div>
and here is the typescript that the call is refering to
import { Component, OnInit, NgModule } from '@angular/core';
import { GoogleChartsModule } from 'angular-google-charts';
import { HttpClient } from '@angular/common/http';
@Component({
selector: 'app-pagina',
templateUrl: './pagina.component.html',
styleUrls: ['./pagina.component.css']
})
@NgModule({
declarations: [PaginaComponent],
imports: [GoogleChartsModule.forRoot(),],
bootstrap: [PaginaComponent],
})
export class PaginaComponent implements OnInit {
serverData: JSON;
employeeData: JSON;
constructor(private http: HttpClient) { }
alunos:any;
grafico:JSON;
ngOnInit() {
this.http.get('http://127.0.0.1:5002/222222').subscribe(dados => {
console.log(dados)
this.alunos = [dados as JSON];
})
this.http.get('http://127.0.0.1:5002/chart/222222').subscribe(dados => {
console.log(dados)
this.grafico = dados as JSON;
})
}
public doughnutChartLabels2:string = ['Total time', 'Remaining time', 'Missing time'];
public colors2 = [{
backgroundColor: ['rgba(17, 168, 0, 1)','rgba(189, 0, 0, 1)', 'rgba(0, 72, 240, 1)'],
fillColor: 'rgba(47, 132, 71, 0.8)',
strokeColor: 'rgba(47, 132, 71, 0.8)',
highlightFill: 'rgba(47, 132, 71, 0.8)',
highlightStroke: 'rgba(47, 132, 71, 0.8)'
}];
public doughnutChartData2:number = [3,45,1];
public doughnutchartDisplay2 = false;
public titleChart2 = [{display:true}];
public doughnutChartType2:string = 'doughnut';
// events
public chartClicked2(e:any):void {
console.log(e);
}
public chartHovered2(e:any):void {
console.log(e);
}
}
and here is the error shown on console: ERROR TypeError: "_co.grafico is undefined"
javascript python angular typescript
asked Nov 20 '18 at 3:07
Astral ThinkerAstral Thinker
3010
I am creating an angular project for front end with back and in python - flask, but, in the last time i tried to make a database appear the console shows a error... however the page updates correctly. Here are the code samples.
here is the place the error is shown but still shows the right data.
<div class=" w3-half" layout="column">
<div id="chartContainer2" style="margin-top:2%; height: 100%; width: 100%;">
<h3 class="titulo">YOUR TIME BANK: {{grafico.horas_aluno}}</h3>
<div style="display: block;">
<canvas baseChart
[data]="doughnutChartData2"
[labels]="doughnutChartLabels2"
[colors]="colors2"
[chartType]="doughnutChartType2"
[legend]="doughnutchartDisplay2"
(chartHover)="chartHovered2($event)"
(chartClick)="chartClicked2($event)"></canvas>
</div>
</div>
and here is the typescript that the call is refering to
import { Component, OnInit, NgModule } from '@angular/core';
import { GoogleChartsModule } from 'angular-google-charts';
import { HttpClient } from '@angular/common/http';
@Component({
selector: 'app-pagina',
templateUrl: './pagina.component.html',
styleUrls: ['./pagina.component.css']
})
@NgModule({
declarations: [PaginaComponent],
imports: [GoogleChartsModule.forRoot(),],
bootstrap: [PaginaComponent],
})
export class PaginaComponent implements OnInit {
serverData: JSON;
employeeData: JSON;
constructor(private http: HttpClient) { }
alunos:any;
grafico:JSON;
ngOnInit() {
this.http.get('http://127.0.0.1:5002/222222').subscribe(dados => {
console.log(dados)
this.alunos = [dados as JSON];
})
this.http.get('http://127.0.0.1:5002/chart/222222').subscribe(dados => {
console.log(dados)
this.grafico = dados as JSON;
})
}
public doughnutChartLabels2:string = ['Total time', 'Remaining time', 'Missing time'];
public colors2 = [{
backgroundColor: ['rgba(17, 168, 0, 1)','rgba(189, 0, 0, 1)', 'rgba(0, 72, 240, 1)'],
fillColor: 'rgba(47, 132, 71, 0.8)',
strokeColor: 'rgba(47, 132, 71, 0.8)',
highlightFill: 'rgba(47, 132, 71, 0.8)',
highlightStroke: 'rgba(47, 132, 71, 0.8)'
}];
public doughnutChartData2:number = [3,45,1];
public doughnutchartDisplay2 = false;
public titleChart2 = [{display:true}];
public doughnutChartType2:string = 'doughnut';
// events
public chartClicked2(e:any):void {
console.log(e);
}
public chartHovered2(e:any):void {
console.log(e);
}
}
and here is the error shown on console: ERROR TypeError: "_co.grafico is undefined"
javascript python angular typescript
javascript python angular typescript
asked Nov 20 '18 at 3:07
Astral ThinkerAstral Thinker
3010
asked Nov 20 '18 at 3:07
Astral ThinkerAstral Thinker
3010
asked Nov 20 '18 at 3:07
Astral ThinkerAstral Thinker
3010
asked Nov 20 '18 at 3:07
Astral ThinkerAstral Thinker
3010
asked Nov 20 '18 at 3:07
Astral ThinkerAstral Thinker
3010
3010
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
2
Try using safe navigation operator as the data loads asynchronously from the api call
<h3 class="titulo">YOUR TIME BANK: {{grafico?.horas_aluno}}</h3>
answered Nov 20 '18 at 3:10
SajeetharanSajeetharan
118k29166227
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
Try using safe navigation operator as the data loads asynchronously from the api call
<h3 class="titulo">YOUR TIME BANK: {{grafico?.horas_aluno}}</h3>
answered Nov 20 '18 at 3:10
SajeetharanSajeetharan
118k29166227
add a comment |
2
Try using safe navigation operator as the data loads asynchronously from the api call
<h3 class="titulo">YOUR TIME BANK: {{grafico?.horas_aluno}}</h3>
answered Nov 20 '18 at 3:10
SajeetharanSajeetharan
118k29166227
add a comment |
2
2
2
Try using safe navigation operator as the data loads asynchronously from the api call
<h3 class="titulo">YOUR TIME BANK: {{grafico?.horas_aluno}}</h3>
answered Nov 20 '18 at 3:10
SajeetharanSajeetharan
118k29166227
Try using safe navigation operator as the data loads asynchronously from the api call
<h3 class="titulo">YOUR TIME BANK: {{grafico?.horas_aluno}}</h3>
answered Nov 20 '18 at 3:10
SajeetharanSajeetharan
118k29166227
answered Nov 20 '18 at 3:10
SajeetharanSajeetharan
118k29166227
answered Nov 20 '18 at 3:10
SajeetharanSajeetharan
118k29166227
answered Nov 20 '18 at 3:10
SajeetharanSajeetharan
118k29166227
118k29166227
add a comment |
add a comment |
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