I'm encountering an issue with Vue Chart JS v3.5.1 in my Nuxt JS/Vue project where when trying to pass options as a prop, the chart defaults back to its default settings and does not reflect the changes I made.
My project includes multiple files:
- plugins/LineChart.js
- components/LineChart.vue
plugins/LineChart.js
import { Line, mixins } from 'vue-chartjs'
const { reactiveProp } = mixins
export default {
extends: Line,
mixins: [reactiveProp],
computed: {
localOptions: function() {
return this.chartOptions
},
localData: function() {
console.log(`data: ${this.chartData}`)
return this.chartData
}
},
mounted () {
this.renderLineChart()
},
methods: {
/*
** Render a line chart
*/
renderLineChart () {
// this.chartdata is created in the mixin.
// If you want to pass options please create a local options object
this.renderChart(this.localData, this.localOptions)
}
},
watch: {
chartData: {
handler: function (val, oldVal) {
this._data._chart.destroy()
this.renderLineChart()
},
deep: true
},
chartOptions: {
handler: function (val, oldVal) {
this.localOptions = val
},
deep: true
}
}
}
components/LineChart.vue
<template>
<div>
<line-chart :chart-data="customChartData" :chart-options="customChartOptions" class="data-chart"></line-chart>
</div>
</template>
<style>
.data-chart canvas {
width: 100% !important;
height: auto !important;
}
</style>
<script>
import LineChart from '~/plugins/LineChart.js'
export default {
components: {
LineChart
},
props: {
labels: {
type: Array,
default: null
},
datasets: {
type: Array,
default: null
},
options: {
type: Object,
default: () => ({})
}
},
data () {
return {
customChartData: {},
customChartOptions: {}
}
},
mounted () {
this.fillData()
},
methods: {
fillData () {
this.customChartData = {
labels: this.labels,
datasets: this.datasets
}
this.customChartOptions = {
options: this.options
}
}
}
}
</script>
Even though my usage seems straightforward, I am facing issues with getting my options to display correctly.
<LineChart
:options="{
responsive: true,
maintainAspectRatio: false,
legend: {
display: false
},
scales: {
xAxes: [{
gridLines: {
display: false
},
ticks: {
autoSkip: true,
maxTicksLimit: 3,
maxRotation: 0,
minRotation: 0
}
}],
yAxes: [{
display: true,
gridLines: {
display: true,
color: '#f3f5f6'
}
}]
},
elements: {
point: {
radius: 0,
hitRadius: 35
}
}
}"
:labels="['test']"
:datasets="[{
fill: false,
borderWidth: 2.5,
pointBackgroundColor: '#fff',
borderColor: '#5046e5',
data: [500,
}]"
/>
Any insights on what mistake I might be making?
UPDATEFurthermore, only the first chart out of several charts displayed on the page shows data. Why would only one chart in a series of charts show data when each has a unique key assigned?