feat: 城市手册后端完成 - 用户/区域/内容/服务/审核系统

city-manual/backend/regions/serializers.py

@@ -0,0 +1,63 @@
+from rest_framework import serializers
+from .models import Region, ModeratorApplication, ModeratorPermission
+from users.serializers import UserSerializer
+
+
+class RegionSerializer(serializers.ModelSerializer):
+    parent = serializers.PrimaryKeyRelatedField(read_only=True)
+    children_count = serializers.SerializerMethodField()
+    
+    class Meta:
+        model = Region
+        fields = [
+            'id', 'name', 'level', 'parent', 'code', 'description',
+            'is_active', 'created_at', 'children_count'
+        ]
+        read_only_fields = ['created_at']
+    
+    def get_children_count(self, obj):
+        return obj.children.count()
+
+
+class RegionDetailSerializer(serializers.ModelSerializer):
+    parent = RegionSerializer(read_only=True)
+    children = RegionSerializer(many=True, read_only=True)
+    articles_count = serializers.SerializerMethodField()
+    services_count = serializers.SerializerMethodField()
+    
+    class Meta:
+        model = Region
+        fields = [
+            'id', 'name', 'level', 'parent', 'children', 'code', 'description',
+            'is_active', 'created_at', 'articles_count', 'services_count'
+        ]
+    
+    def get_articles_count(self, obj):
+        return obj.articles.filter(publish_status='published').count()
+    
+    def get_services_count(self, obj):
+        return obj.featured_services.filter(publish_status='published').count()
+
+
+class ModeratorApplicationSerializer(serializers.ModelSerializer):
+    applicant = UserSerializer(read_only=True)
+    region = RegionSerializer(read_only=True)
+    
+    class Meta:
+        model = ModeratorApplication
+        fields = [
+            'id', 'applicant', 'region', 'application_reason',
+            'support_count', 'required_support', 'deadline',
+            'status', 'created_at'
+        ]
+        read_only_fields = ['applicant', 'support_count', 'status', 'created_at']
+
+
+class ModeratorPermissionSerializer(serializers.ModelSerializer):
+    moderator = UserSerializer(read_only=True)
+    region = RegionSerializer(read_only=True)
+    
+    class Meta:
+        model = ModeratorPermission
+        fields = ['id', 'moderator', 'region', 'rank', 'status', 'created_at']
+        read_only_fields = ['created_at']