Update

app/Http/Controllers/Api/StatisticsController.php

@@ -43,14 +43,31 @@ class StatisticsController extends Controller
         //--------------------------------------------------------------------------
         // 近 30 天趋势数据
         //--------------------------------------------------------------------------
-        $start = $yesterday->copy()->subDays(29);
+        $startAt = $yesterday->copy()->subDays(29);
-        $end = $yesterday->copy();
+        $endAt = $yesterday->copy();
+
         /** @var \Illuminate\Database\Eloquent\Collection */
         $ledgers30days = (clone $query)
-            ->whereBetween('date', [$start, $end])
+            ->whereBetween('date', [$startAt, $endAt])
             ->get(['date', 'sales', 'expenditure'])
             ->keyBy('date');
 
+        $trend = collect();
+
+        while ($startAt->lte($endAt)) {
+            $ledger = $ledgers30days->get(
+                $date = $startAt->format('Y-m-d')
+            );
+
+            $trend->push([
+                'date' => $date,
+                'sales' => trim_zeros($ledger->sales ?? 0),
+                'expenditure' => trim_zeros($ledger->expenditure ?? 0),
+            ]);
+
+            $startAt->addDay();
+        }
+
         return [
             // 本月总账录入
             'current_month_ledger' => [
@@ -66,7 +83,7 @@ class StatisticsController extends Controller
                 'expenditure' => trim_zeros($yesterdayLedger->expenditure ?? 0),
             ],
             // 近30天趋势数据
-            'trend_data_of_30days' => $this->prepareTrendData($start->copy(), $end->copy(), $ledgers30days),
+            'trend_data_of_30days' => $trend,
         ];
     }
 
@@ -190,30 +207,6 @@ class StatisticsController extends Controller
         return $data->all();
     }
 
-    /**
-     * 准备趋势数据
-     */
-    protected function prepareTrendData(Carbon $start, Carbon $end, Collection $ledgers): array
-    {
-        $data = collect();
-
-        do {
-            $ledger = $ledgers->get(
-                $date = $start->format('Y-m-d')
-            );
-
-            $data->push([
-                'date' => $date,
-                'sales' => trim_zeros($ledger->sales ?? 0),
-                'expenditure' => trim_zeros($ledger->expenditure ?? 0),
-            ]);
-
-            $start->addDay();
-        } while ($start->lte($end));
-
-        return $data->all();
-    }
-
     /**
      * 处理区域和门店过滤条件
      */