fix / add logger fields to db tables

backend/sitemanagement/admin.py

@@ -1,3 +1,31 @@
 from django.contrib import admin
+from .models import Multiplexor, Channel, SensorType, SignalFormat, Sensor, Metric, Alert
 
-# Register your models here.
+@admin.register(Multiplexor)
+class MultiplexorAdmin(admin.ModelAdmin):
+    list_display = ('name', 'ip', 'subnet', 'gateway', 'sd_path')
+
+@admin.register(Channel)
+class ChannelAdmin(admin.ModelAdmin):
+    list_display = ('multiplexor', 'number', 'position')
+
+@admin.register(SensorType) 
+class SensorTypeAdmin(admin.ModelAdmin):
+    list_display = ('code', 'name', 'description')
+
+
+@admin.register(Metric)
+class MetricAdmin(admin.ModelAdmin):
+    list_display = ('timestamp', 'sensor', 'raw_value', 'value', 'status')
+
+@admin.register(Alert)
+class AlertAdmin(admin.ModelAdmin):
+    list_display = ('sensor', 'metric', 'sensor_type', 'message', 'severity', 'created_at', 'resolved')
+
+@admin.register(SignalFormat)
+class SignalFormatAdmin(admin.ModelAdmin):
+    list_display = ('sensor_type', 'code', 'unit', 'conversion_rule')
+
+@admin.register(Sensor)
+class SensorAdmin(admin.ModelAdmin):
+    list_display = ('channel', 'sensor_type', 'signal_format', 'serial_number', 'name')