DocManagerBackend/docmanager_backend/documents/views.py

117 lines
3.5 KiB
Python

from rest_framework import generics
from .serializers import (
DocumentSerializer,
DocumentFileSerializer,
DocumentUploadSerializer,
DocumentDeleteSerializer,
DocumentUpdateSerializer
)
from rest_framework.permissions import IsAuthenticated
from rest_framework.pagination import PageNumberPagination
from accounts.permissions import IsStaff, IsHead
from .models import Document
from django.db.models import Q
from operator import or_
from functools import reduce
class DocumentPagination(PageNumberPagination):
page_size = 4
page_size_query_param = 'page_size'
max_page_size = 4
class DocumentUpdateView(generics.UpdateAPIView):
"""
Used by staff to upload documents.
"""
http_method_names = ["patch"]
serializer_class = DocumentUpdateSerializer
queryset = Document.objects.all()
permission_classes = [IsAuthenticated, IsHead]
class DocumentUploadView(generics.CreateAPIView):
"""
Used by staff to upload documents.
"""
http_method_names = ["post"]
serializer_class = DocumentUploadSerializer
permission_classes = [IsAuthenticated, IsStaff]
class DocumentDeleteView(generics.DestroyAPIView):
"""
Used by staff to delete documents. Accepts the document id as a URL parameter
"""
http_method_names = ["delete"]
serializer_class = DocumentDeleteSerializer
queryset = Document.objects.all()
permission_classes = [IsAuthenticated, IsStaff]
class DocumentListView(generics.ListAPIView):
"""
Used by clients to view documents. Does not include actual download links to documents
"""
http_method_names = ["get"]
serializer_class = DocumentSerializer
queryset = Document.objects.all().order_by("-date_uploaded")
pagination_class = PageNumberPagination
permission_classes = [IsAuthenticated]
class DocumentStaffListView(generics.ListAPIView):
"""
Used by staff to view documents. Includes actual download links to documents
"""
http_method_names = ["get"]
serializer_class = DocumentFileSerializer
queryset = Document.objects.all().order_by("-date_uploaded")
pagination_class = DocumentPagination
permission_classes = [IsAuthenticated, IsStaff]
def get_queryset(self):
# Get the base queryset
queryset = super().get_queryset()
# Check if 'keywords' query parameter is present
keyword = self.request.query_params.get('search', None)
if keyword:
queries = []
# Create a list to hold individual field conditions for this keyword
field_queries = [
Q(name__icontains=keyword),
Q(document_type__icontains=keyword),
Q(sent_from__icontains=keyword),
Q(document_month__icontains=keyword),
Q(document_year__icontains=keyword),
Q(subject__icontains=keyword),
Q(ocr_metadata__icontains=keyword)
]
# Combine the field conditions with OR
combined_query = Q()
for q in field_queries:
if not combined_query:
combined_query = q
else:
combined_query |= q
queries.append(combined_query)
# Now combine all keyword conditions with OR
final_query = Q()
for q in queries:
if not final_query:
final_query = q
else:
final_query |= q
queryset = queryset.filter(final_query)
return queryset