I know that this inconvenient is very presented, may be that I need learn
more about of serializer relationships
I have the following model:
class Field(models.Model):
FIELD_TYPE_NATURE = 'Grama natural'
FIELD_TYPE_ARTIFICIAL = 'Grama sintetica'
FIELD_TYPE_CHOICES = (
(FIELD_TYPE_NATURE, u'Grama natural'),
(FIELD_TYPE_ARTIFICIAL, u'Grama sintetica'),
)
MODALITY_11 = 'Fútbol 11'
MODALITY_8 = 'Fútbol 8'
MODALITY_CHOICES = (
(MODALITY_11, u'Fútbol 11'),
(MODALITY_8, u'Fútbol 8'),
)
name = models.CharField(
max_length=150,
unique=True,
db_index=True,
primary_key=True,
)
field_type = models.CharField(
choices=FIELD_TYPE_CHOICES,
default=False,
blank=False,
max_length=20,
verbose_name=('Tipo de material/grama de la cancha')
)
modality = models.CharField(
max_length=40,
blank=False,
verbose_name='Modalidad'
)
photo = models.ImageField(upload_to='fields', blank=True, null=True)
location = models.CharField(max_length=150, blank=False)
def __str__(self):
return '%s %s %s' % (self.name, self.field_type, self.location)
My serializer is the following:
class FieldSerializer(serializers.HyperlinkedModelSerializer):
#url = serializers.HyperlinkedIdentityField(view_name='field-detail',)
class Meta:
model = Field
fields = ('url', 'name','field_type','modality','photo','location')
My viewset is:
class FieldViewSet(viewsets.ModelViewSet):
queryset = Field.objects.all()
serializer_class = FieldSerializer
This is my router:
router = routers.DefaultRouter()
router.register(r'fields', FieldViewSet)
And my url:
...
url(r'^api/', include(router.urls)),
...
When I go to the http://localhost:8000/api/fields/ url I get the following
message:
File
"/home/bgarcial/.virtualenvs/fuupbol2/lib/python3.5/site-packages/rest_framework/relations.py",
line 386, in to_representation
raise ImproperlyConfigured(msg % self.view_name)
django.core.exceptions.ImproperlyConfigured: Could not resolve URL for
**hyperlinked relationship using view name "field-detail". You may have failed
to include the related model in your API, or incorrectly configured the
`lookup_field` attribute on this field.**
[11/Nov/2016 16:39:53] "GET /api/fields/ HTTP/1.1" 500 187477
When I use HyperlinkedIdentityField
<http://www.django-rest-framework.org/api-guide/relations/#hyperlinkedidentityfield>
in
my FieldSerializer class:
class FieldSerializer(serializers.HyperlinkedModelSerializer):
url = serializers.HyperlinkedIdentityField(view_name='field-detail',)
class Meta:
model = Field
fields = ('url', 'name','field_type','modality','photo','location')
I follow getting the same error. Althought when I go to the url
http://localhost:8000/api/fields/ I want get is a list of my objects, then
is possible that I should put:
url = serializers.HyperlinkedIdentityField(view_name='field-list',)
?
I use HyperlinkedIdentityField according to:
This field can be applied as an identity relationship, such as the 'url'
field on a HyperlinkedModelSerializer. It can also be used for an attribute
on the object.
I put the field-list in my view_name attribute and I get the error related
Could not resolve URL for hyperlinked relationship using view name
"field-list". You may have failed to include the related model in your API, or
incorrectly configured the `lookup_field` attribute on this field.
I don't understand the situations when I should use view_name attribute in
relation to if I wnt get a list objects, a object detail and so ...
although here <http://stackoverflow.com/a/26989845/2773461> explain
something about it.
When I should use HyperlinkedModelSerializer and ModelSerializer
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