first push

LiveStock/LiveStoksAndPoultry/serializers.py

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+from django.db.models import Sum
+from rest_framework import serializers
+
+from LiveStock.Cooperative.serializers import CooperativeSerializer
+from LiveStock.Rancher.serializers import RancherSerializer
+from LiveStock.models import LiveStock, Rancher
+import datetime
+
+class LiveStockSerializer(serializers.ModelSerializer):
+    rancher = serializers.SerializerMethodField('get_rancher')
+    age = serializers.SerializerMethodField('get_age')
+
+    class Meta:
+        model = LiveStock
+        fields = '__all__'
+
+
+
+    def get_rancher(self,instance):
+        rancher=Rancher.objects.filter(herd_code=instance.herd_code).first()
+        ser_data=RancherSerializer(rancher)
+        return ser_data.data
+
+    def get_age(self,instance):
+        if instance.birth_day_gh:
+            now=datetime.datetime.now().date()
+            age=(now - instance.birth_day_gh.date()).days
+            return age
+        else:
+            return None
+
+class PosLiveStockSerializer(serializers.ModelSerializer):
+    cooperative=CooperativeSerializer(read_only=True)
+    class Meta:
+        model = Rancher
+        fields = ['key','fullname','cooperative','mobile','city','herd_code','national_id','allow_buy','weight_allocation_heavy','weight_allocation_light']