blob: b17f135b43b14fa03fbcaa62c3fe21d76c23e5d9 [file] [log] [blame]
from rest_framework.decorators import api_view
from rest_framework.response import Response
from rest_framework.reverse import reverse
from rest_framework import serializers
from rest_framework import generics
from rest_framework import status
from rest_framework.generics import GenericAPIView
from core.models import *
from django.forms import widgets
from rest_framework import filters
from django.conf.urls import patterns, url
"""
Schema of the generator object:
all: Set of all Model objects
all_if(regex): Set of Model objects that match regex
Model object:
plural: English plural of object name
camel: CamelCase version of object name
refs: list of references to other Model objects
props: list of properties minus refs
TODO: Deal with subnets
"""
def get_REST_patterns():
return patterns('',
url(r'^plstackapi/$', api_root),
{% for object in generator.all %}
url(r'plstackapi/{{ object.rest_name }}/$', {{ object.camel }}List.as_view(), name='{{ object.singular }}-list'),
url(r'plstackapi/{{ object.rest_name }}/(?P<pk>[a-zA-Z0-9\-]+)/$', {{ object.camel }}Detail.as_view(), name ='{{ object.singular }}-detail'),
{% endfor %}
)
@api_view(['GET'])
def api_root(request, format=None):
return Response({
{% for object in generator.all %}'{{ object.plural }}': reverse('{{ object }}-list', request=request, format=format),
{% endfor %}
})
# Based on serializers.py
{% for object in generator.all %}
class {{ object.camel }}Serializer(serializers.HyperlinkedModelSerializer):
id = serializers.Field()
{% for ref in object.refs %}
{% if ref.multi %}
{{ ref.plural }} = serializers.HyperlinkedRelatedField(many=True, read_only=True, view_name='{{ ref }}-detail')
{% else %}
{{ ref }} = serializers.HyperlinkedRelatedField(read_only=True, view_name='{{ ref }}-detail')
{% endif %}
{% endfor %}
humanReadableName = serializers.SerializerMethodField("getHumanReadableName")
validators = serializers.SerializerMethodField("getValidators")
def getHumanReadableName(self, obj):
return str(obj)
def getValidators(self, obj):
try:
return obj.getValidators()
except:
return None
class Meta:
model = {{ object.camel }}
fields = ('humanReadableName', 'validators', {% for prop in object.props %}'{{ prop }}',{% endfor %}{% for ref in object.refs %}{%if ref.multi %}'{{ ref.plural }}'{% else %}'{{ ref }}'{% endif %},{% endfor %})
class {{ object.camel }}IdSerializer(serializers.ModelSerializer):
id = serializers.Field()
{% for ref in object.refs %}
{% if ref.multi %}
{{ ref.plural }} = serializers.HyperlinkedRelatedField(many=True, read_only=True, view_name='{{ ref }}-detail')
{% else %}
{{ ref }} = serializers.HyperlinkedRelatedField(read_only=True, view_name='{{ ref }}-detail')
{% endif %}
{% endfor %}
humanReadableName = serializers.SerializerMethodField("getHumanReadableName")
validators = serializers.SerializerMethodField("getValidators")
def getHumanReadableName(self, obj):
return str(obj)
def getValidators(self, obj):
try:
return obj.getValidators()
except:
return None
class Meta:
model = {{ object.camel }}
fields = ('humanReadableName', 'validators', {% for prop in object.props %}'{{ prop }}',{% endfor %}{% for ref in object.refs %}{%if ref.multi %}'{{ ref.plural }}'{% else %}'{{ ref }}'{% endif %},{% endfor %})
{% endfor %}
serializerLookUp = {
{% for object in generator.all %}
{{ object.camel }}: {{ object.camel }}Serializer,
{% endfor %}
None: None,
}
class PlanetStackRetrieveUpdateDestroyAPIView(generics.RetrieveUpdateDestroyAPIView):
# To handle fine-grained field permissions, we have to check can_update
# the object has been updated but before it has been saved.
def update(self, request, *args, **kwargs):
partial = kwargs.pop('partial', False)
self.object = self.get_object_or_none()
serializer = self.get_serializer(self.object, data=request.DATA,
files=request.FILES, partial=partial)
if not serializer.is_valid():
response = {"error": "validation",
"specific_error": "not serializer.is_valid()",
"reasons": serializer.errors}
return Response(response, status=status.HTTP_400_BAD_REQUEST)
try:
self.pre_save(serializer.object)
except ValidationError as err:
# full_clean on model instance may be called in pre_save,
# so we have to handle eventual errors.
response = {"error": "validation",
"specific_error": "ValidationError in pre_save",
"reasons": err.message_dict}
return Response(response, status=status.HTTP_400_BAD_REQUEST)
if serializer.object is not None:
if not serializer.object.can_update(request.user):
return Response(status=status.HTTP_400_BAD_REQUEST)
if self.object is None:
self.object = serializer.save(force_insert=True)
self.post_save(self.object, created=True)
return Response(serializer.data, status=status.HTTP_201_CREATED)
self.object = serializer.save(force_update=True)
self.post_save(self.object, created=False)
return Response(serializer.data, status=status.HTTP_200_OK)
def destroy(self, request, *args, **kwargs):
obj = self.get_object()
if obj.can_update(request.user):
return super(generics.RetrieveUpdateDestroyAPIView, self).destroy(request, *args, **kwargs)
else:
return Response(status=status.HTTP_400_BAD_REQUEST)
# Based on core/views/*.py
{% for object in generator.all %}
class {{ object.camel }}List(generics.ListCreateAPIView):
queryset = {{ object.camel }}.objects.select_related().all()
serializer_class = {{ object.camel }}Serializer
id_serializer_class = {{ object.camel }}IdSerializer
filter_backends = (filters.DjangoFilterBackend,)
filter_fields = ({% for prop in object.props %}'{{ prop }}',{% endfor %}{% for ref in object.refs %}{%if ref.multi %}'{{ ref.plural }}'{% else %}'{{ ref }}'{% endif %},{% endfor %})
def get_serializer_class(self):
no_hyperlinks = self.request.QUERY_PARAMS.get('no_hyperlinks', False)
if (no_hyperlinks):
return self.id_serializer_class
else:
return self.serializer_class
def get_queryset(self):
return {{ object.camel }}.select_by_user(self.request.user)
def create(self, request, *args, **kwargs):
serializer = self.get_serializer(data=request.DATA, files=request.FILES)
if not (serializer.is_valid()):
response = {"error": "validation",
"specific_error": "not serializer.is_valid()",
"reasons": serializer.errors}
return Response(response, status=status.HTTP_400_BAD_REQUEST)
obj = serializer.object
obj.caller = request.user
if obj.can_update(request.user):
return super({{ object.camel }}List, self).create(request, *args, **kwargs)
else:
raise Exception("failed obj.can_update")
ret = super({{ object.camel }}List, self).create(request, *args, **kwargs)
if (ret.status_code%100 != 200):
raise Exception(ret.data)
return ret
class {{ object.camel }}Detail(PlanetStackRetrieveUpdateDestroyAPIView):
queryset = {{ object.camel }}.objects.select_related().all()
serializer_class = {{ object.camel }}Serializer
id_serializer_class = {{ object.camel }}IdSerializer
def get_serializer_class(self):
no_hyperlinks = self.request.QUERY_PARAMS.get('no_hyperlinks', False)
if (no_hyperlinks):
return self.id_serializer_class
else:
return self.serializer_class
def get_queryset(self):
return {{ object.camel }}.select_by_user(self.request.user)
# update() is handled by PlanetStackRetrieveUpdateDestroyAPIView
# destroy() is handled by PlanetStackRetrieveUpdateDestroyAPIView
{% endfor %}