Files
mayan-edms/mayan/apps/control_codes/api_views.py
Roberto Rosario f9ba08ee59 Add control code preview generation
Signed-off-by: Roberto Rosario <roberto.rosario@mayan-edms.com>
2019-09-01 14:35:04 -04:00

232 lines
7.4 KiB
Python

from __future__ import absolute_import, unicode_literals
from django.http import HttpResponse
from django.shortcuts import get_object_or_404
from django.views.decorators.cache import cache_control, patch_cache_control
from rest_framework import generics
from mayan.apps.acls.models import AccessControlList
from mayan.apps.documents.models import Document, DocumentType
from mayan.apps.documents.permissions import permission_document_type_view
from mayan.apps.rest_api.filters import MayanObjectPermissionsFilter
from mayan.apps.rest_api.permissions import MayanPermission
from .literals import CONTROL_SHEET_CODE_IMAGE_TASK_TIMEOUT
from .models import ControlSheet
#from .permissions import (
# permission_workflow_create, permission_workflow_delete,
# permission_workflow_edit, permission_workflow_view
#)
from .serializers import (
ControlSheetSerializer, ControlSheetCodeSerializer
)
from .settings import settings_control_sheet_code_image_cache_time
from .tasks import task_generate_control_sheet_code_image
class APIControlSheetListView(generics.ListCreateAPIView):
"""
get: Returns a list of all the control sheets.
post: Create a new control sheet.
"""
filter_backends = (MayanObjectPermissionsFilter,)
#mayan_object_permissions = {'GET': (permission_control_sheet_view,)}
#mayan_view_permissions = {'POST': (permission_control_sheet_create,)}
permission_classes = (MayanPermission,)
queryset = ControlSheet.objects.all()
serializer_class = ControlSheetSerializer
def get_serializer(self, *args, **kwargs):
if not self.request:
return None
return super(APIControlSheetListView, self).get_serializer(
*args, **kwargs
)
#def get_serializer_class(self):
# if self.request.method == 'GET':
# return ControlSheetSerializer
# else:
# return WritableControlSheetSerializer
class APIControlSheetView(generics.RetrieveUpdateDestroyAPIView):
"""
delete: Delete the selected control sheet.
get: Return the details of the selected control sheet.
patch: Edit the selected control sheet.
put: Edit the selected control sheet.
"""
filter_backends = (MayanObjectPermissionsFilter,)
#mayan_object_permissions = {
# 'DELETE': (permission_control sheet_delete,),
# 'GET': (permission_control sheet_view,),
# 'PATCH': (permission_control sheet_edit,),
# 'PUT': (permission_control sheet_edit,)
#}
lookup_url_kwarg = 'control_sheet_id'
queryset = ControlSheet.objects.all()
serializer_class = ControlSheetSerializer
def get_serializer(self, *args, **kwargs):
if not self.request:
return None
return super(APIControlSheetView, self).get_serializer(
*args, **kwargs
)
#def get_serializer_class(self):
# if self.request.method == 'GET':
# return ControlSheetSerializer
# else:
# return WritableControlSheetSerializer
class APIControlSheetCodeListView(generics.ListCreateAPIView):
"""
get: Returns a list of all the control sheet codes.
post: Create a new control sheet code.
"""
serializer_class = ControlSheetCodeSerializer
def get_queryset(self):
return self.get_control_sheet().codes.all()
def get_serializer_context(self):
"""
Extra context provided to the serializer class.
"""
context = super(APIControlSheetCodeListView, self).get_serializer_context()
if self.kwargs:
context.update(
{
'control_sheet': self.get_control_sheet(),
}
)
return context
def get_control_sheet(self):
#if self.request.method == 'GET':
# permission_required = permission_control_sheet_view
#else:
# permission_required = permission_control_sheet_edit
control_sheet = get_object_or_404(
klass=ControlSheet, pk=self.kwargs['control_sheet_id']
)
#AccessControlList.objects.check_access(
# obj=control_sheet, permissions=(permission_required,),
# user=self.request.user
#)
return control_sheet
class APIControlSheetCodeView(generics.RetrieveUpdateDestroyAPIView):
"""
delete: Delete the selected control sheet code.
get: Return the details of the selected control sheet code.
patch: Edit the selected control sheet code.
put: Edit the selected control sheet code.
"""
lookup_url_kwarg = 'control_sheet_code_id'
serializer_class = ControlSheetCodeSerializer
def get_queryset(self):
return self.get_control_sheet().codes.all()
def get_serializer_context(self):
"""
Extra context provided to the serializer class.
"""
context = super(APIControlSheetCodeView, self).get_serializer_context()
if self.kwargs:
context.update(
{
'control_sheet': self.get_control_sheet(),
}
)
return context
def get_control_sheet(self):
#if self.request.method == 'GET':
# permission_required = permission_control_sheet_view
#else:
# permission_required = permission_control_sheet_edit
control_sheet = get_object_or_404(
klass=ControlSheet, pk=self.kwargs['control_sheet_id']
)
#AccessControlList.objects.check_access(
# obj=control_sheet, permissions=(permission_required,),
# user=self.request.user
#)
return control_sheet
class APIControlSheetCodeImageView(generics.RetrieveAPIView):
"""
get: Returns an image representation of the selected control_sheet.
"""
filter_backends = (MayanObjectPermissionsFilter,)
#mayan_object_permissions = {
# 'GET': (permission_control_sheet_view,),
#}
lookup_url_kwarg = 'control_sheet_code_id'
#queryset = ControlSheetCode.objects.all()
def get_queryset(self):
return self.get_control_sheet().codes.all()
def get_control_sheet(self):
#if self.request.method == 'GET':
# permission_required = permission_control_sheet_view
#else:
# permission_required = permission_control_sheet_edit
control_sheet = get_object_or_404(
klass=ControlSheet, pk=self.kwargs['control_sheet_id']
)
#AccessControlList.objects.check_access(
# obj=control_sheet, permissions=(permission_required,),
# user=self.request.user
#)
return control_sheet
def get_serializer(self, *args, **kwargs):
return None
def get_serializer_class(self):
return None
@cache_control(private=True)
def retrieve(self, request, *args, **kwargs):
task = task_generate_control_sheet_code_image.apply_async(
kwargs=dict(
control_sheet_code_id=self.get_object().pk,
)
)
cache_filename = task.get(timeout=CONTROL_SHEET_CODE_IMAGE_TASK_TIMEOUT)
cache_file = self.get_object().cache_partition.get_file(filename=cache_filename)
with cache_file.open() as file_object:
response = HttpResponse(file_object.read(), content_type='image')
if '_hash' in request.GET:
patch_cache_control(
response,
max_age=settings_control_sheet_image_cache_time.value
)
return response