update link registration site to executive dashboard

backend/apps/farms/serializers.py

@@ -1,15 +1,31 @@
 from rest_framework import serializers
 
-from apps.accounts.serializers import PkAsIdMixin
-from apps.farms.models import Cycle, Flock, Kandang, Site
+from apps.accounts.serializers import PkAsIdMixin, SlugPkAsIdMixin
+from apps.farms.models import Cycle, Flock, Kandang, Site, allocate_site_id, site_name_slug
 
 
-class SiteSerializer(PkAsIdMixin, serializers.ModelSerializer):
+class SiteSerializer(SlugPkAsIdMixin, serializers.ModelSerializer):
     class Meta:
         model = Site
         fields = ["id", "site_name", "user", "created_at", "updated_at"]
         read_only_fields = ["id", "created_at", "updated_at"]
 
+    def create(self, validated_data):
+        validated_data["site_id"] = allocate_site_id(validated_data["site_name"])
+        return super().create(validated_data)
+
+    def validate_site_name(self, value):
+        name = str(value or "").strip()
+        if not name:
+            raise serializers.ValidationError("Nama site wajib diisi.")
+        site_name_slug(name)  # reject names that cannot form a slug
+        qs = Site.objects.filter(site_name__iexact=name)
+        if self.instance:
+            qs = qs.exclude(pk=self.instance.pk)
+        if qs.exists():
+            raise serializers.ValidationError("Nama site sudah dipakai.")
+        return name
+
 
 class FeedInButtonUrlSerializer(serializers.Serializer):
     label = serializers.CharField(max_length=50, required=False, allow_blank=True, default="")
@@ -18,6 +34,7 @@ class FeedInButtonUrlSerializer(serializers.Serializer):
 
 class KandangSerializer(PkAsIdMixin, serializers.ModelSerializer):
     feed_in_button_urls = FeedInButtonUrlSerializer(many=True, required=False)
+    site = serializers.PrimaryKeyRelatedField(queryset=Site.objects.all())
 
     class Meta:
         model = Kandang