class Foo(Model):
"""
Models a sample model with a json field and user foreign key
"""
# Unique human readable identifier for URLs, etc
key = CharField(max_length=20, unique=True, null=False)
name = CharField(max_length=50, unique=False, null=False)
created_at = DateTimeField(auto_now_add=True)
updated_at = DateTimeField(auto_now=True)
# Example of a json field
data = JSONField(null=False, default=dict(example=1.1))
# Example of a foreign key
user = ForeignKey(get_user_model(), on_delete=models.DO_NOTHING)
bars = ManyToManyField(Bar)
# Example of geojson container
geo_collection = GeometryCollectionField(null=False)
# This stores the full geojson, whereas geo_collection only stores geometry for PostGIS operations
# The two must be kept in sync. It might be better to get rid of geo_collection and just use this
geojson = JSONField()
class Meta:
app_label = "sample_webapp"
def __str__(self):
return self.name
class SpatialResource(RandomIDModel):
class Meta:
ordering = ('name',)
class TutelaryMeta:
perm_type = 'resource'
path_fields = ('resource', 'pk')
actions = (
('resource.list',
{'description': _("List resources"),
'permissions_object': 'resource',
'error_message': messages.RESOURCE_LIST}),
('resource.view',
{'description': _("View resource"),
'error_message': messages.RESOURCE_VIEW}),
('resource.archive',
{'description': _("Archive resource"),
'error_message': messages.RESOURCE_ARCHIVE}),
('resource.unarchive',
{'description': _("Unarchive resource"),
'error_message': messages.RESOURCE_UNARCHIVE}),
)
name = models.CharField(max_length=256, null=True, blank=True)
time = models.DateTimeField(auto_now_add=True, null=True, blank=True)
resource = models.ForeignKey(
Resource,
on_delete=models.CASCADE, related_name='spatial_resources'
)
geom = GeometryCollectionField(
srid=4326, blank=True, null=True
)
attributes = JSONAttributeField(default={})
# Audit history
created_date = models.DateTimeField(auto_now_add=True)
last_updated = models.DateTimeField(auto_now=True)
def __repr__(self):
repr_string = ('<SpatialResource id={obj.id}'
' resource={obj.resource.id}>')
return repr_string.format(obj=self)
@property
def archived(self):
return self.resource.archived
@property
def project(self):
return self.resource.project