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fix(student-dashboard): handle empty pie chart data states gracefully

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This commit is contained in:
cfngc4594 2026-05-19 16:49:12 +08:00
parent 8473d6ed61
commit f0b69f5768
1 changed files with 23 additions and 3 deletions
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26
src/app/(protected)/dashboard/student/dashboard/page.tsx
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@ -94,6 +94,12 @@ export default function StudentDashboard() {
errorPieChartData,
} = data;
const COLORS = ["#4CAF50", "#FFC107"];
const EMPTY_CHART_COLOR = "#E5E7EB";
const hasCompletionRecord = completionData.completed > 0;
const hasErrorChartData = errorPieChartData.some((item) => item.value > 0);
const normalizedErrorPieChartData = hasErrorChartData
? errorPieChartData
: [{ name: "暂无数据", value: 1 }];
return (
<div className="container mx-auto p-6 space-y-6">
@ -144,6 +150,11 @@ export default function StudentDashboard() {
</PieChart>
</ResponsiveContainer>
</div>
{!hasCompletionRecord && (
<div className="text-center text-xs text-muted-foreground">
暂无完成记录
</div>
)}
</div>
</CardContent>
</Card>
@ -166,7 +177,7 @@ export default function StudentDashboard() {
<ResponsiveContainer width="100%" height="100%">
<PieChart>
<Pie
data={errorPieChartData}
data={normalizedErrorPieChartData}
cx="50%"
cy="50%"
innerRadius={60}
@ -175,14 +186,18 @@ export default function StudentDashboard() {
paddingAngle={5}
dataKey="value"
>
{errorPieChartData.map(
{normalizedErrorPieChartData.map(
(
entry: { name: string; value: number },
index: number
) => (
<Cell
key={`cell-${index}`}
fill={COLORS[index % COLORS.length]}
fill={
hasErrorChartData
? COLORS[index % COLORS.length]
: EMPTY_CHART_COLOR
}
/>
)
)}
@ -190,6 +205,11 @@ export default function StudentDashboard() {
</PieChart>
</ResponsiveContainer>
</div>
{!hasErrorChartData && (
<div className="text-center text-xs text-muted-foreground">
暂无作答数据
</div>
)}
</div>
</CardContent>
</Card>