rest api 기능 구현

frontend/components/admin/dashboard/ElementConfigModal.tsx

@@ -112,12 +112,21 @@ export function ElementConfigModal({ element, isOpen, onClose, onSave }: Element
   }
 
   // 저장 가능 여부 확인
+  const isPieChart = element.subtype === "pie" || element.subtype === "donut";
+  const isApiSource = dataSource.type === "api";
+
   const canSave =
     currentStep === 2 &&
     queryResult &&
     queryResult.rows.length > 0 &&
     chartConfig.xAxis &&
-    (chartConfig.yAxis || (Array.isArray(chartConfig.yAxis) && chartConfig.yAxis.length > 0));
+    (isPieChart || isApiSource
+      ? // 파이/도넛 차트 또는 REST API: Y축 또는 집계 함수 필요
+        chartConfig.yAxis ||
+        (Array.isArray(chartConfig.yAxis) && chartConfig.yAxis.length > 0) ||
+        chartConfig.aggregation === "count"
+      : // 일반 차트 (DB): Y축 필수
+        chartConfig.yAxis || (Array.isArray(chartConfig.yAxis) && chartConfig.yAxis.length > 0));
 
   return (
     <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50 backdrop-blur-sm">
@@ -182,6 +191,7 @@ export function ElementConfigModal({ element, isOpen, onClose, onSave }: Element
                     queryResult={queryResult}
                     onConfigChange={handleChartConfigChange}
                     chartType={element.subtype}
+                    dataSourceType={dataSource.type}
                   />
                 ) : (
                   <div className="flex h-full items-center justify-center rounded-lg border-2 border-dashed border-gray-300 bg-gray-50 p-8 text-center">