Initial commit

backend/apps/events/serializers.py

@@ -0,0 +1,90 @@
+from rest_framework import serializers
+from .models import Skill, Event, TaskArea, Shift, ShiftSignup, EventTemplate
+
+class SkillSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Skill
+        fields = ['id', 'name', 'description', 'color', 'created_at']
+
+class ShiftSignupSerializer(serializers.ModelSerializer):
+    display_name = serializers.SerializerMethodField()
+    is_guest = serializers.SerializerMethodField()
+
+    class Meta:
+        model = ShiftSignup
+        fields = ['id', 'display_name', 'is_guest', 'created_at']
+
+    def get_is_guest(self, obj):
+        return obj.user is None
+
+    def get_display_name(self, obj):
+        request = self.context.get('request')
+        # PRIVACY RULE: Guests (unauthenticated users) MUST NOT see who signed up where
+        if request and not request.user.is_authenticated:
+            return "Belegt (Anonym)"
+        
+        if obj.user:
+            return obj.user.get_display_name()
+        return obj.guest_name or "Gast"
+
+class ShiftSerializer(serializers.ModelSerializer):
+    required_skills = SkillSerializer(many=True, read_only=True)
+    required_skill_ids = serializers.PrimaryKeyRelatedField(
+        queryset=Skill.objects.all(), many=True, write_only=True, required=False, source='required_skills'
+    )
+    signups = serializers.SerializerMethodField()
+    signups_count = serializers.SerializerMethodField()
+    is_full = serializers.SerializerMethodField()
+
+    class Meta:
+        model = Shift
+        fields = [
+            'id', 'task_area', 'title', 'start_time', 'end_time',
+            'max_participants', 'required_skills', 'required_skill_ids',
+            'signups', 'signups_count', 'is_full'
+        ]
+
+    def get_signups(self, obj):
+        signups_qs = obj.signups.all()
+        serializer = ShiftSignupSerializer(signups_qs, many=True, context=self.context)
+        return serializer.data
+
+    def get_signups_count(self, obj):
+        return obj.signups.count()
+
+    def get_is_full(self, obj):
+        return obj.signups.count() >= obj.max_participants
+
+class TaskAreaSerializer(serializers.ModelSerializer):
+    shifts = ShiftSerializer(many=True, read_only=True)
+
+    class Meta:
+        model = TaskArea
+        fields = ['id', 'event', 'name', 'description', 'order', 'shifts']
+
+class EventSerializer(serializers.ModelSerializer):
+    task_areas = TaskAreaSerializer(many=True, read_only=True)
+    created_by_name = serializers.SerializerMethodField()
+
+    class Meta:
+        model = Event
+        fields = [
+            'id', 'title', 'description', 'location',
+            'start_date', 'end_date', 'is_active', 'created_by', 'created_by_name',
+            'task_areas', 'created_at', 'updated_at'
+        ]
+        read_only_fields = ['created_by', 'created_at', 'updated_at']
+
+    def get_created_by_name(self, obj):
+        return obj.created_by.get_display_name() if obj.created_by else "Unbekannt"
+
+class EventTemplateSerializer(serializers.ModelSerializer):
+    created_by_name = serializers.SerializerMethodField()
+
+    class Meta:
+        model = EventTemplate
+        fields = ['id', 'name', 'description', 'template_data', 'created_by', 'created_by_name', 'created_at']
+        read_only_fields = ['created_by', 'created_at']
+
+    def get_created_by_name(self, obj):
+        return obj.created_by.get_display_name() if obj.created_by else "System"