file attechment for ticket

backend/ticket/migrations/0013_attachment_message_attachments_ticket_attachments.py

@@ -0,0 +1,33 @@
+# Generated by Django 5.1.2 on 2025-02-22 22:50
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('ticket', '0012_alter_ticket_status'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Attachment',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('file', models.FileField(upload_to='attachments')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('size', models.PositiveIntegerField(blank=True, null=True)),
+                ('name', models.CharField(blank=True, max_length=400, null=True)),
+            ],
+        ),
+        migrations.AddField(
+            model_name='message',
+            name='attachments',
+            field=models.ManyToManyField(blank=True, related_name='messages', to='ticket.attachment'),
+        ),
+        migrations.AddField(
+            model_name='ticket',
+            name='attachments',
+            field=models.ManyToManyField(blank=True, related_name='tickets', to='ticket.attachment'),
+        ),
+    ]

backend/ticket/models.py

@@ -3,6 +3,22 @@ from account.models import User
 from order.models import OrderModel
 from django_jalali.db import models as jmodels
 
+
+
+class Attachment(models.Model):
+    file = models.FileField(upload_to='attachments')
+    created_at = models.DateTimeField(auto_now_add=True)
+    size = models.PositiveIntegerField(null=True, blank=True)
+    name = models.CharField(max_length=400, null=True, blank=True)
+    def __str__(self):
+        return self.file.name
+
+    def save(self, *args, **kwargs):
+        if self.file:
+            self.size = self.file.size
+            self.name = self.file.name
+        super(Attachment, self).save(*args, **kwargs)
+
 class Ticket(models.Model):
     objects = jmodels.jManager()
     STATUS_CHOICES = [
@@ -28,6 +44,7 @@ class Ticket(models.Model):
     created_at = jmodels.jDateTimeField(auto_now_add=True, verbose_name='ساخته شده در')
     updated_at = jmodels.jDateTimeField(auto_now=True, verbose_name='اپدیت شده در')
     order = models.ForeignKey(OrderModel ,blank=True, null=True, on_delete=models.SET_NULL)
+    attachments = models.ManyToManyField(Attachment, related_name='tickets', blank=True)
 
     def __str__(self):
         return self.subject
@@ -44,6 +61,7 @@ class Message(models.Model):
     sender = models.ForeignKey(User, on_delete=models.CASCADE, verbose_name='ارسال کننده')
     content = models.TextField(verbose_name='محتوای پیام')
     created_at = jmodels.jDateTimeField(auto_now_add=True, verbose_name='ساخته شده در')
+    attachments = models.ManyToManyField(Attachment, related_name='messages', blank=True)
 
     def __str__(self):
         return f"Message by {self.sender.full_name} on {self.ticket.subject}"

backend/ticket/serializers.py

@@ -1,7 +1,10 @@
 from rest_framework import serializers
-from .models import Ticket, Message
+from .models import Ticket, Message, Attachment
 from django.utils.timezone import localtime
 from account.serializers import ProfileSerializer
+
+
+
 class MessageSerializer(serializers.ModelSerializer):
     class Meta:
         model = Message
@@ -21,3 +24,19 @@ class TicketListSerializer(serializers.ModelSerializer):
         model = Ticket
         exclude = ('customer', 'admin', 'order', 'content')
         read_only_fields = ('status',)
+
+
+class AttachmentSerializer(serializers.ModelSerializer):
+    file = serializers.FileField(write_only=True)
+    link = serializers.SerializerMethodField()
+
+    class Meta:
+        model = Attachment
+        fields = ['id', 'name', 'file','link' , 'created_at', 'size']
+        read_only_fields = ('size', 'name', )
+        
+    def get_link(self, obj):
+        request = self.context.get('request')
+        if request is not None:
+            return request.build_absolute_uri(obj.file.url)
+        return obj.file.url

backend/ticket/urls.py

@@ -4,12 +4,14 @@ from .views import (
     TicketListView,
     TicketDetailView,
     MessageCreateView,
-    UpdateTicketStatusView
+    UpdateTicketStatusView, 
+    AttachmentUploadView
 )
 
 urlpatterns = [
     path('create', TicketCreateView.as_view(), name='ticket-create'),
     path('', TicketListView.as_view(), name='ticket-list'),
     path('<int:pk>', TicketDetailView.as_view(), name='ticket-detail'),
-    path('message/<int:pk>', MessageCreateView.as_view(), name='message-create'),
+    path('message/create', MessageCreateView.as_view(), name='message-create'),
+    path('attachment/create', AttachmentUploadView.as_view(), name='attachment-upload'),
 ]

backend/ticket/views.py

@@ -2,9 +2,33 @@ from rest_framework import generics, permissions
 from rest_framework.response import Response
 from rest_framework.views import APIView
 from .models import Ticket, Message
-from .serializers import TicketListSerializer, MessageSerializer, TicketSerializer
+from .serializers import TicketListSerializer, MessageSerializer, TicketSerializer, AttachmentSerializer
 from utils.pagination import StructurePagination
 from drf_spectacular.utils import extend_schema, OpenApiParameter, OpenApiTypes
+from rest_framework.permissions import IsAuthenticated
+from rest_framework.parsers import MultiPartParser, FormParser
+from drf_spectacular.utils import extend_schema, OpenApiParameter, OpenApiExample, OpenApiTypes, OpenApiResponse
+from rest_framework import status
+
+
+
+class AttachmentUploadView(APIView):
+    permission_classes = [IsAuthenticated]
+    parser_classes = [MultiPartParser, FormParser]
+
+    @extend_schema(
+        request=AttachmentSerializer,
+        responses={201: AttachmentSerializer},
+        description="upload an attachment (file).",
+    )
+    def post(self, request, *args, **kwargs):
+        serializer = AttachmentSerializer(data=request.data, context={'request': request})
+        if serializer.is_valid():
+            serializer.save()
+            return Response(serializer.data, status=status.HTTP_201_CREATED)
+        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+
+
 
 class TicketCreateView(generics.CreateAPIView):
     queryset = Ticket.objects.all()