I get some data from back-end to show. When I inspect element with React Developer Tools, I can see that data is there but not shown in production. ChartJS version is 3.8, not react-chartjs
I was having the same problem in development, too, but solved it by setting a unique key with key={Math.random()}. In development build, it works just fine. Problem occurs in production. I deploy my app on Firebase.
I wait for data before rendering:
{isAnyFetching ? "Loading..." : <BarChart01 data={chartData} width={595} height={248} key={Math.random()} />}
I tried giving an array of zeroes until data is loaded to be sure chartData changed to trigger re-render by changing the state of the chart component. I also tried giving an extraKey prop and change it with useEffect to re-render again.
The whole chart component is:
function BarChart01({
data,
width,
height
}) {
const canvas = useRef(null);
const legend = useRef(null);
useEffect(() => {
const ctx = canvas.current;
// eslint-disable-next-line no-unused-vars
const chart = new Chart(ctx, {
type: 'bar',
data: data,
options: {
layout: {
padding: {
top: 12,
bottom: 16,
left: 20,
right: 20,
},
},
scales: {
y: {
grid: {
drawBorder: false,
},
ticks: {
maxTicksLimit: 6,
callback: (value) => formatValue(value),
},
},
x: {
type: 'time',
time: {
parser: 'MM-DD-YYYY',
unit: 'month',
displayFormats: {
month: 'MMM YY',
},
},
grid: {
display: false,
drawBorder: false,
},
},
},
plugins: {
legend: {
display: true,
},
tooltip: {
callbacks: {
title: () => false, // Disable tooltip title
label: (context) => formatValue(context.parsed.y),
},
},
},
interaction: {
intersect: false,
mode: 'nearest',
},
animation: {
duration: 500,
},
maintainAspectRatio: false,
resizeDelay: 200,
},
plugins: [{
id: 'htmlLegend',
afterUpdate(c, args, options) {
const ul = legend.current;
if (!ul) return;
// Remove old legend items
while (ul.firstChild) {
ul.firstChild.remove();
}
// Reuse the built-in legendItems generator
const items = c.options.plugins.legend.labels.generateLabels(c);
items.forEach((item) => {
const li = document.createElement('li');
li.style.marginRight = tailwindConfig().theme.margin[4];
// Button element
const button = document.createElement('button');
button.style.display = 'inline-flex';
button.style.alignItems = 'center';
button.style.opacity = item.hidden ? '.3' : '';
button.onclick = () => {
c.setDatasetVisibility(item.datasetIndex, !c.isDatasetVisible(item.datasetIndex));
c.update();
};
// Color box
const box = document.createElement('span');
box.style.display = 'block';
box.style.width = tailwindConfig().theme.width[3];
box.style.height = tailwindConfig().theme.height[3];
box.style.borderRadius = tailwindConfig().theme.borderRadius.full;
box.style.marginRight = tailwindConfig().theme.margin[2];
box.style.borderWidth = '3px';
box.style.borderColor = item.fillStyle;
box.style.pointerEvents = 'none';
// Label
const labelContainer = document.createElement('span');
labelContainer.style.display = 'flex';
labelContainer.style.alignItems = 'center';
const value = document.createElement('span');
value.style.color = tailwindConfig().theme.colors.slate[800];
value.style.fontSize = tailwindConfig().theme.fontSize['3xl'][0];
value.style.lineHeight = tailwindConfig().theme.fontSize['3xl'][1].lineHeight;
value.style.fontWeight = tailwindConfig().theme.fontWeight.bold;
value.style.marginRight = tailwindConfig().theme.margin[2];
value.style.pointerEvents = 'none';
const label = document.createElement('span');
label.style.color = tailwindConfig().theme.colors.slate[500];
label.style.fontSize = tailwindConfig().theme.fontSize.sm[0];
label.style.lineHeight = tailwindConfig().theme.fontSize.sm[1].lineHeight;
const theValue = c.data.datasets[item.datasetIndex].data.reduce((a, b) => a + b, 0);
const valueText = document.createTextNode(formatValue(theValue));
const labelText = document.createTextNode(item.text);
value.appendChild(valueText);
label.appendChild(labelText);
li.appendChild(button);
button.appendChild(box);
button.appendChild(labelContainer);
labelContainer.appendChild(value);
labelContainer.appendChild(label);
ul.appendChild(li);
});
},
}],
});
chart.update();
return () => chart.destroy();
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [data]);
return (
<>
<div className="px-5 py-3">
<ul ref={legend} className="flex flex-wrap"></ul>
</div>
<div className="grow">
<canvas ref={canvas} width={width} height={height}></canvas>
</div>
</>
);
}
According to the code, it seems like
button.onclick = () => {
c.setDatasetVisibility(item.datasetIndex,!c.isDatasetVisible(item.datasetIndex));
c.update();
};
part in forEach loop is responsible of this update operation when I click on a label. So it somehow doesn't call update function in production as it should as useEffect listens to data prop.
