Hey everyone,
While using the Tastypie API, I have been getting a MultipleObjectsReturned
error somehow when obj_get gets called. I feed a Resource URI to a
ToManyField for one of the resources and somehow I get this error. This
has me really frustrated, since I thought that by giving it a URI (ex: "
/api/v1/gene/1/ "), it would only return one object. Creating and saving
objects works fine without the Tastypie API.
These are the involved resources:
class GeneResource(ModelResource):
entrezid = fields.IntegerField(attribute = 'entrezid')
genesets = fields.ToManyField("genesets.api.resources.GeneSetResource",
'genesets', null=True, blank=True)
class Meta:
queryset = Gene.objects.all()
resource_name = 'gene'
filtering = {'entrezid': ALL, }
class GeneSetResource(ModelResource):
title = fields.CharField(attribute='title')
user = fields.ForeignKey(UserResource, 'user', full=True)
organism = fields.ToOneField(OrganismResource, 'organism', full=True)
genes = fields.ToManyField(GeneResource, 'genes',
related_name='genesets', full=True)
class Meta:
queryset = GeneSet.objects.all()
resource_name = 'geneset'
authorization = Authorization()
filtering = {
'user': ALL_WITH_RELATIONS,
'title': ALL,
'genes': ALL_WITH_RELATIONS,
}
And this is the error I get:
"Traceback (most recent call last): File
"/home/rene/Documents/venv/local/lib/python2.7/site-packages/tastypie/resources.py",
line 217, in wrapper response = callback(request, *args, **kwargs) File
"/home/rene/Documents/venv/local/lib/python2.7/site-packages/tastypie/resources.py",
line 459, in dispatch_list return self.dispatch('list', request, **kwargs)
File
"/home/rene/Documents/venv/local/lib/python2.7/site-packages/tastypie/resources.py",
line 491, in dispatch response = method(request, **kwargs) File
"/home/rene/Documents/venv/local/lib/python2.7/site-packages/tastypie/resources.py",
line 1357, in post_list updated_bundle = self.obj_create(bundle,
**self.remove_api_resource_names(kwargs)) File
"/home/rene/Documents/venv/local/lib/python2.7/site-packages/tastypie/resources.py",
line 2150, in obj_create return self.save(bundle) File
"/home/rene/Documents/venv/local/lib/python2.7/site-packages/tastypie/resources.py",
line 2300, in save m2m_bundle = self.hydrate_m2m(bundle) File
"/home/rene/Documents/venv/local/lib/python2.7/site-packages/tastypie/resources.py",
line 964, in hydrate_m2m bundle.data[field_name] =
field_object.hydrate_m2m(bundle) File
"/home/rene/Documents/venv/local/lib/python2.7/site-packages/tastypie/fields.py",
line 853, in hydrate_m2m
m2m_hydrated.append(self.build_related_resource(value, **kwargs)) File
"/home/rene/Documents/venv/local/lib/python2.7/site-packages/tastypie/fields.py",
line 653, in build_related_resource return
self.resource_from_uri(self.fk_resource, value, **kwargs) File
"/home/rene/Documents/venv/local/lib/python2.7/site-packages/tastypie/fields.py",
line 573, in resource_from_uri obj = fk_resource.get_via_uri(uri,
request=request) File
"/home/rene/Documents/venv/local/lib/python2.7/site-packages/tastypie/resources.py",
line 838, in get_via_uri return self.obj_get(bundle=bundle,
**self.remove_api_resource_names(kwargs)) File
"/home/rene/Documents/venv/local/lib/python2.7/site-packages/tastypie/resources.py",
line 2131, in obj_get raise MultipleObjectsReturned("More than '%s' matched
'%s'." % (self._meta.object_class.__name__, stringified_kwargs))
MultipleObjectsReturned: More than 'Gene' matched ''. "
Any ideas of what is going on?? Thanks! Much appreciated!!
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