update

controller/statisticsController.js

@@ -19,6 +19,14 @@ async function getSMCChangeTrend(req, res, next) {
         if ((req.body.startTime && req.body.endTime)) {
             search.time = { $gte: new Date(req.body.startTime), $lte: new Date(req.body.endTime) }
         }
+        if(req.body.land) {
+            let devs = await DB.Device.find({land: req.body.land}).lean().exec();
+            if(devs && devs.length) {
+                let devNums = devs.map(o => {return o.deviceNumber});
+                search.deviceNumber = {$in: devNums}
+            }
+        }
+        console.log(JSON.stringify(search))
         let aggr = [
             {
                 $match: {