How can I update chart with state change












1















When I am listing the new data it updates but then the chart only updates the first time. I don't have access inside the Line component so I can't do componentWillReceiveProps(nextProps) for that one. How can I update the chart with each new state change?



import React, { Component } from 'react';

import {Line} from 'react-chartjs-2';

class Chart extends Component {

componentWillReceiveProps(nextProps) {
debugger
this.setState({ data: nextProps.info });
}
constructor(props) {
super(props);
this.state = {
data:
}

}


render() {

let chart = {
chartData:{
labels: this.state.data,
datasets:[
{
label: 'Weight',
data: this.state.data,
backgroundColor:[
'rgba(54, 162, 235, 0.6)',
'rgba(255, 206, 86, 0.6)',
]
}
]
}
}

return (
<div className="chart" style={{height: 200 + "px", width: 100 + "%"}}>
<Line
data={chart.chartData}
width={100}
height={50}
options={{
maintainAspectRatio: false
}}
/>
<ul>
{this.state.data.map(val=> <li>{val}</li>)}
</ul>
</div>
);
}

}









share|improve this question























  • Are you planning on changing data inside that component? If not, you don't need to use state at all and you can just use this.props.info directly in render() .

    – cubrr
    Jan 2 at 4:01
















1















When I am listing the new data it updates but then the chart only updates the first time. I don't have access inside the Line component so I can't do componentWillReceiveProps(nextProps) for that one. How can I update the chart with each new state change?



import React, { Component } from 'react';

import {Line} from 'react-chartjs-2';

class Chart extends Component {

componentWillReceiveProps(nextProps) {
debugger
this.setState({ data: nextProps.info });
}
constructor(props) {
super(props);
this.state = {
data:
}

}


render() {

let chart = {
chartData:{
labels: this.state.data,
datasets:[
{
label: 'Weight',
data: this.state.data,
backgroundColor:[
'rgba(54, 162, 235, 0.6)',
'rgba(255, 206, 86, 0.6)',
]
}
]
}
}

return (
<div className="chart" style={{height: 200 + "px", width: 100 + "%"}}>
<Line
data={chart.chartData}
width={100}
height={50}
options={{
maintainAspectRatio: false
}}
/>
<ul>
{this.state.data.map(val=> <li>{val}</li>)}
</ul>
</div>
);
}

}









share|improve this question























  • Are you planning on changing data inside that component? If not, you don't need to use state at all and you can just use this.props.info directly in render() .

    – cubrr
    Jan 2 at 4:01














1












1








1








When I am listing the new data it updates but then the chart only updates the first time. I don't have access inside the Line component so I can't do componentWillReceiveProps(nextProps) for that one. How can I update the chart with each new state change?



import React, { Component } from 'react';

import {Line} from 'react-chartjs-2';

class Chart extends Component {

componentWillReceiveProps(nextProps) {
debugger
this.setState({ data: nextProps.info });
}
constructor(props) {
super(props);
this.state = {
data:
}

}


render() {

let chart = {
chartData:{
labels: this.state.data,
datasets:[
{
label: 'Weight',
data: this.state.data,
backgroundColor:[
'rgba(54, 162, 235, 0.6)',
'rgba(255, 206, 86, 0.6)',
]
}
]
}
}

return (
<div className="chart" style={{height: 200 + "px", width: 100 + "%"}}>
<Line
data={chart.chartData}
width={100}
height={50}
options={{
maintainAspectRatio: false
}}
/>
<ul>
{this.state.data.map(val=> <li>{val}</li>)}
</ul>
</div>
);
}

}









share|improve this question














When I am listing the new data it updates but then the chart only updates the first time. I don't have access inside the Line component so I can't do componentWillReceiveProps(nextProps) for that one. How can I update the chart with each new state change?



import React, { Component } from 'react';

import {Line} from 'react-chartjs-2';

class Chart extends Component {

componentWillReceiveProps(nextProps) {
debugger
this.setState({ data: nextProps.info });
}
constructor(props) {
super(props);
this.state = {
data:
}

}


render() {

let chart = {
chartData:{
labels: this.state.data,
datasets:[
{
label: 'Weight',
data: this.state.data,
backgroundColor:[
'rgba(54, 162, 235, 0.6)',
'rgba(255, 206, 86, 0.6)',
]
}
]
}
}

return (
<div className="chart" style={{height: 200 + "px", width: 100 + "%"}}>
<Line
data={chart.chartData}
width={100}
height={50}
options={{
maintainAspectRatio: false
}}
/>
<ul>
{this.state.data.map(val=> <li>{val}</li>)}
</ul>
</div>
);
}

}






ruby-on-rails reactjs






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asked Jan 2 at 0:57









Cynthia RittenbachCynthia Rittenbach

104




104













  • Are you planning on changing data inside that component? If not, you don't need to use state at all and you can just use this.props.info directly in render() .

    – cubrr
    Jan 2 at 4:01



















  • Are you planning on changing data inside that component? If not, you don't need to use state at all and you can just use this.props.info directly in render() .

    – cubrr
    Jan 2 at 4:01

















Are you planning on changing data inside that component? If not, you don't need to use state at all and you can just use this.props.info directly in render() .

– cubrr
Jan 2 at 4:01





Are you planning on changing data inside that component? If not, you don't need to use state at all and you can just use this.props.info directly in render() .

– cubrr
Jan 2 at 4:01












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