# up device list api

apps/counter/api/serializers.py

@@ -39,36 +39,50 @@ class DeviceCountSerializer(serializers.ModelSerializer):
 
 
 class DeviceInfoSerializer(serializers.ModelSerializer):
-    compile_time = serializers.SerializerMethodField()
-    last_connect = serializers.SerializerMethodField()
-    last_offline_time = serializers.SerializerMethodField()
+    status = serializers.SerializerMethodField()
+    count = serializers.SerializerMethodField()
+    signal = serializers.SerializerMethodField()
+    energy = serializers.SerializerMethodField()
+    time = serializers.SerializerMethodField()
 
     class Meta:
         model = DeviceInfo
         fields = [
             'device_id',
             'device_name',
-            'chip_type',
-            'chip_id',
-            'compile_time',
-            'online',
-            'last_connect',
-            'last_offline_time'
+            'status',
+            'count',
+            'signal',
+            'energy',
+            'time',
         ]
 
-    def get_compile_time(self, obj):
-        if obj.compile_time:
-            return obj.compile_time.strftime('%Y-%m-%d %H:%M:%S')
-        return None
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.latest = None
 
-    def get_last_connect(self, obj):
-        if obj.last_connect:
-            return obj.last_connect.strftime('%Y-%m-%d %H:%M:%S')
-        return None
+    def get_status(self, obj):
+        return obj.online
 
-    def get_last_offline_time(self, obj):
-        if obj.last_offline_time:
-            return obj.last_offline_time.strftime('%Y-%m-%d %H:%M:%S')
+    def get_count(self, obj):
+        self.latest = DeviceCount.objects.filter(device_id=obj.device_id).order_by('-data_time')[0]
+        if self.latest:
+            return self.latest.count
+        return 0
+
+    def get_signal(self, obj):
+        if self.latest:
+            return self.latest.csq
+        return 0
+
+    def get_energy(self, obj):
+        if self.latest:
+            return self.latest.vol
+        return 0
+
+    def get_time(self, obj):
+        if self.latest:
+            return self.latest.data_time.strftime('%Y-%m-%d %H:%M:%S')
         return None