Merge pull request #58 from SunbirdAI/timestamps

Add timestamps to EnvironmentalParameter model

device_metrics/migrations/0006_auto_20240805_1451.py

@@ -0,0 +1,44 @@
+# Generated by Django 3.2.6 on 2024-08-05 11:51
+
+from django.db import migrations, models
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+ dependencies = [
+ ('device_metrics', '0005_environmentalparameter_soundinferencedata'),
+ ]
+
+ operations = [
+ migrations.AlterModelOptions(
+ name='environmentalparameter',
+ options={'ordering': ['-created_at']},
+ ),
+ migrations.AlterModelOptions(
+ name='soundinferencedata',
+ options={'ordering': ['-created_at'], 'verbose_name_plural': 'Sound Inference Data'},
+ ),
+ migrations.AddField(
+ model_name='environmentalparameter',
+ name='created_at',
+ field=models.DateTimeField(auto_now_add=True, default=django.utils.timezone.now),
+ preserve_default=False,
+ ),
+ migrations.AddField(
+ model_name='environmentalparameter',
+ name='updated_at',
+ field=models.DateTimeField(auto_now=True),
+ ),
+ migrations.AddField(
+ model_name='soundinferencedata',
+ name='created_at',
+ field=models.DateTimeField(auto_now_add=True, default=django.utils.timezone.now),
+ preserve_default=False,
+ ),
+ migrations.AddField(
+ model_name='soundinferencedata',
+ name='updated_at',
+ field=models.DateTimeField(auto_now=True),
+ ),
+ ]

device_metrics/models.py

@@ -43,6 +43,11 @@ class EnvironmentalParameter(models.Model):
  power_usage = models.FloatField(
  help_text="Power utilization of the PI", default=0.0
  )
+ created_at = models.DateTimeField(auto_now_add=True)
+ updated_at = models.DateTimeField(auto_now=True)
+
+ class Meta:
+ ordering = ["-created_at"]
 
  def __str__(self):
  return f"{self.device.device_id} - Temp: {self.temperature}, Pressure: {self.pressure}, Humidity: {self.humidity}"
@@ -65,9 +70,12 @@ class SoundInferenceData(models.Model):
  inferred_audio_name = models.CharField(
  max_length=255, help_text="Name of inferred sound file"
  )
+ created_at = models.DateTimeField(auto_now_add=True)
+ updated_at = models.DateTimeField(auto_now=True)
 
  class Meta:
  verbose_name_plural = "Sound Inference Data"
+ ordering = ["-created_at"]
 
  def __str__(self):
  return f"{self.device.device_id} - {self.inference_class}: {self.inference_probability}"

device_metrics/serializers.py

@@ -47,6 +47,7 @@ class Meta:
  "ram_value",
  "system_temperature",
  "power_usage",
+ "created_at",
  ]
 
 
@@ -63,4 +64,5 @@ class Meta:
  "inference_probability",
  "inference_class",
  "inferred_audio_name",
+ "created_at",
  ]

device_metrics/views.py

@@ -23,10 +23,10 @@ def get_queryset(self):
 
 
 class EnvironmentalParameterViewSet(viewsets.ModelViewSet):
- queryset = EnvironmentalParameter.objects.all()
+ queryset = EnvironmentalParameter.objects.all().order_by("-created_at")
  serializer_class = EnvironmentalParameterSerializer
 
 
 class SoundInferenceDataViewSet(viewsets.ModelViewSet):
- queryset = SoundInferenceData.objects.all()
+ queryset = SoundInferenceData.objects.all().order_by("-created_at")
  serializer_class = SoundInferenceDataSerializer