import logging
from datetime import timedelta
from actstream.actions import follow, is_following
from django.conf import settings
from django.contrib.auth.models import Group
from django.core.exceptions import ValidationError
from django.core.validators import MaxValueValidator, MinValueValidator
from django.db import models
from django.db.transaction import on_commit
from django.utils import timezone
from django.utils.functional import cached_property
from django.utils.text import get_valid_filename
from django.utils.timezone import localtime
from django_extensions.db.fields import AutoSlugField
from guardian.models import GroupObjectPermissionBase, UserObjectPermissionBase
from guardian.shortcuts import assign_perm, remove_perm
from grandchallenge.algorithms.models import AlgorithmImage
from grandchallenge.archives.models import Archive
from grandchallenge.challenges.models import Challenge
from grandchallenge.components.models import (
ComponentImage,
ComponentInterface,
ComponentJob,
)
from grandchallenge.core.models import UUIDModel
from grandchallenge.core.storage import protected_s3_storage, public_s3_storage
from grandchallenge.core.validators import (
ExtensionValidator,
JSONValidator,
MimeTypeValidator,
)
from grandchallenge.evaluation.tasks import (
assign_evaluation_permissions,
assign_submission_permissions,
calculate_ranks,
create_evaluation,
)
from grandchallenge.evaluation.utils import (
StatusChoices,
SubmissionKindChoices,
)
from grandchallenge.hanging_protocols.models import ViewContentMixin
from grandchallenge.notifications.models import Notification, NotificationType
from grandchallenge.subdomains.utils import reverse
from grandchallenge.uploads.models import UserUpload
logger = logging.getLogger(__name__)
EXTRA_RESULT_COLUMNS_SCHEMA = {
"definitions": {},
"$schema": "http://json-schema.org/draft-06/schema#",
"type": "array",
"title": "The Extra Results Columns Schema",
"items": {
"$id": "#/items",
"type": "object",
"title": "The Items Schema",
"required": ["title", "path", "order"],
"additionalProperties": False,
"properties": {
"title": {
"$id": "#/items/properties/title",
"type": "string",
"title": "The Title Schema",
"default": "",
"examples": ["Mean Dice"],
"pattern": "^(.*)$",
},
"path": {
"$id": "#/items/properties/path",
"type": "string",
"title": "The Path Schema",
"default": "",
"examples": ["aggregates.dice.mean"],
"pattern": "^(.*)$",
},
"error_path": {
"$id": "#/items/properties/error_path",
"type": "string",
"title": "The Error Path Schema",
"default": "",
"examples": ["aggregates.dice.std"],
"pattern": "^(.*)$",
},
"order": {
"$id": "#/items/properties/order",
"type": "string",
"enum": ["asc", "desc"],
"title": "The Order Schema",
"default": "",
"examples": ["asc"],
"pattern": "^(asc|desc)$",
},
},
},
}
[docs]class Phase(UUIDModel, ViewContentMixin):
# This must match the syntax used in jquery datatables
# https://datatables.net/reference/option/order
ASCENDING = "asc"
DESCENDING = "desc"
EVALUATION_SCORE_SORT_CHOICES = (
(ASCENDING, "Ascending"),
(DESCENDING, "Descending"),
)
OFF = "off"
OPTIONAL = "opt"
REQUIRED = "req"
SUPPLEMENTARY_URL_CHOICES = SUPPLEMENTARY_FILE_CHOICES = (
(OFF, "Off"),
(OPTIONAL, "Optional"),
(REQUIRED, "Required"),
)
ALL = "all"
MOST_RECENT = "rec"
BEST = "bst"
RESULT_DISPLAY_CHOICES = (
(ALL, "Display all results"),
(MOST_RECENT, "Only display each users most recent result"),
(BEST, "Only display each users best result"),
)
ABSOLUTE = "abs"
MEAN = "avg"
MEDIAN = "med"
SCORING_CHOICES = (
(ABSOLUTE, "Use the absolute value of the score column"),
(
MEAN,
"Use the mean of the relative ranks of the score and extra result columns",
),
(
MEDIAN,
"Use the median of the relative ranks of the score and extra result columns",
),
)
SubmissionKindChoices = SubmissionKindChoices
challenge = models.ForeignKey(
Challenge, on_delete=models.PROTECT, editable=False
)
archive = models.ForeignKey(
Archive,
on_delete=models.SET_NULL,
null=True,
blank=True,
help_text=(
"Which archive should be used as the source dataset for this "
"phase?"
),
)
title = models.CharField(
max_length=64,
help_text="The title of this phase.",
default="Challenge",
)
slug = AutoSlugField(populate_from="title", max_length=64)
score_title = models.CharField(
max_length=32,
blank=False,
default="Score",
help_text=(
"The name that will be displayed for the scores column, for "
"instance: Score (log-loss)"
),
)
score_jsonpath = models.CharField(
max_length=255,
blank=True,
help_text=(
"The jsonpath of the field in metrics.json that will be used "
"for the overall scores on the results page. See "
"http://goessner.net/articles/JsonPath/ for syntax. For example: "
"dice.mean"
),
)
score_error_jsonpath = models.CharField(
max_length=255,
blank=True,
help_text=(
"The jsonpath for the field in metrics.json that contains the "
"error of the score, eg: dice.std"
),
)
score_default_sort = models.CharField(
max_length=4,
choices=EVALUATION_SCORE_SORT_CHOICES,
default=DESCENDING,
help_text=(
"The default sorting to use for the scores on the results page."
),
)
score_decimal_places = models.PositiveSmallIntegerField(
blank=False,
default=4,
help_text=("The number of decimal places to display for the score"),
)
extra_results_columns = models.JSONField(
default=list,
blank=True,
help_text=(
"A JSON object that contains the extra columns from metrics.json "
"that will be displayed on the results page. "
),
validators=[JSONValidator(schema=EXTRA_RESULT_COLUMNS_SCHEMA)],
)
scoring_method_choice = models.CharField(
max_length=3,
choices=SCORING_CHOICES,
default=ABSOLUTE,
help_text=("How should the rank of each result be calculated?"),
)
result_display_choice = models.CharField(
max_length=3,
choices=RESULT_DISPLAY_CHOICES,
default=ALL,
help_text=("Which results should be displayed on the leaderboard?"),
)
creator_must_be_verified = models.BooleanField(
default=False,
help_text=(
"If True, only participants with verified accounts can make "
"submissions to this phase"
),
)
submission_kind = models.PositiveSmallIntegerField(
default=SubmissionKindChoices.CSV,
choices=SubmissionKindChoices.choices,
help_text=(
"Should participants submit a .csv/.zip file of predictions, "
"or an algorithm?"
),
)
allow_submission_comments = models.BooleanField(
default=False,
help_text=(
"Allow users to submit comments as part of their submission."
),
)
display_submission_comments = models.BooleanField(
default=False,
help_text=(
"If true, submission comments are shown on the results page."
),
)
supplementary_file_choice = models.CharField(
max_length=3,
choices=SUPPLEMENTARY_FILE_CHOICES,
default=OFF,
help_text=(
"Show a supplementary file field on the submissions page so that "
"users can upload an additional file along with their predictions "
"file as part of their submission (eg, include a pdf description "
"of their method). Off turns this feature off, Optional means "
"that including the file is optional for the user, Required means "
"that the user must upload a supplementary file."
),
)
supplementary_file_label = models.CharField(
max_length=32,
blank=True,
default="Supplementary File",
help_text=(
"The label that will be used on the submission and results page "
"for the supplementary file. For example: Algorithm Description."
),
)
supplementary_file_help_text = models.CharField(
max_length=128,
blank=True,
default="",
help_text=(
"The help text to include on the submissions page to describe the "
'submissions file. Eg: "A PDF description of the method.".'
),
)
show_supplementary_file_link = models.BooleanField(
default=False,
help_text=(
"Show a link to download the supplementary file on the results "
"page."
),
)
supplementary_url_choice = models.CharField(
max_length=3,
choices=SUPPLEMENTARY_URL_CHOICES,
default=OFF,
help_text=(
"Show a supplementary url field on the submission page so that "
"users can submit a link to a publication that corresponds to "
"their submission. Off turns this feature off, Optional means "
"that including the url is optional for the user, Required means "
"that the user must provide an url."
),
)
supplementary_url_label = models.CharField(
max_length=32,
blank=True,
default="Publication",
help_text=(
"The label that will be used on the submission and results page "
"for the supplementary url. For example: Publication."
),
)
supplementary_url_help_text = models.CharField(
max_length=128,
blank=True,
default="",
help_text=(
"The help text to include on the submissions page to describe the "
'submissions url. Eg: "A link to your publication.".'
),
)
show_supplementary_url = models.BooleanField(
default=False,
help_text=("Show a link to the supplementary url on the results page"),
)
submission_limit = models.PositiveIntegerField(
default=0,
help_text=(
"The limit on the number of times that a user can make a "
"submission over the submission limit period. "
"Set this to 0 to close submissions for this phase."
),
)
submission_limit_period = models.PositiveSmallIntegerField(
default=1,
null=True,
blank=True,
help_text=(
"The number of days to consider for the submission limit period. "
"If this is set to 1, then the submission limit is applied "
"over the previous day. If it is set to 365, then the submission "
"limit is applied over the previous year. If the value is not "
"set, then the limit is applied over all time."
),
validators=[MinValueValidator(limit_value=1)],
)
submissions_open_at = models.DateTimeField(
null=True,
blank=True,
help_text=(
"If set, participants will not be able to make submissions to "
"this phase before this time."
),
)
submissions_close_at = models.DateTimeField(
null=True,
blank=True,
help_text=(
"If set, participants will not be able to make submissions to "
"this phase after this time."
),
)
submission_page_html = models.TextField(
help_text=(
"HTML to include on the submission page for this challenge."
),
blank=True,
)
auto_publish_new_results = models.BooleanField(
default=True,
help_text=(
"If true, new results are automatically made public. If false, "
"the challenge administrator must manually publish each new "
"result."
),
)
display_all_metrics = models.BooleanField(
default=True,
help_text=(
"Should all of the metrics be displayed on the Result detail page?"
),
)
inputs = models.ManyToManyField(
to=ComponentInterface, related_name="evaluation_inputs"
)
outputs = models.ManyToManyField(
to=ComponentInterface, related_name="evaluation_outputs"
)
algorithm_inputs = models.ManyToManyField(
to=ComponentInterface,
related_name="+",
blank=True,
help_text="The input interfaces that the algorithms for this phase must use",
)
algorithm_outputs = models.ManyToManyField(
to=ComponentInterface,
related_name="+",
blank=True,
help_text="The output interfaces that the algorithms for this phase must use",
)
algorithm_time_limit = models.PositiveSmallIntegerField(
default=20 * 60,
help_text="Time limit for inference jobs in seconds",
validators=[
MinValueValidator(limit_value=60),
MaxValueValidator(limit_value=3600),
],
)
public = models.BooleanField(
default=True,
help_text=(
"Uncheck this box to hide this phase's submission page and "
"leaderboard from participants. Participants will then no longer "
"have access to their previous submissions and evaluations from this "
"phase if they exist, and they will no longer see the "
"respective submit and leaderboard tabs for this phase. "
"For you as admin these tabs remain visible."
"Note that hiding a phase is only possible if submissions for "
"this phase are closed for participants."
),
)
workstation = models.ForeignKey(
"workstations.Workstation",
null=True,
blank=True,
on_delete=models.PROTECT,
)
workstation_config = models.ForeignKey(
"workstation_configs.WorkstationConfig",
null=True,
blank=True,
on_delete=models.SET_NULL,
)
hanging_protocol = models.ForeignKey(
"hanging_protocols.HangingProtocol",
null=True,
blank=True,
on_delete=models.SET_NULL,
)
class Meta:
unique_together = (("challenge", "title"), ("challenge", "slug"))
ordering = ("challenge", "submissions_open_at", "created")
permissions = (
("create_phase_submission", "Create Phase Submission"),
("create_phase_workspace", "Create Phase Workspace"),
)
[docs] def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self._orig_public = self.public
def __str__(self):
return f"{self.title} Evaluation for {self.challenge.short_name}"
[docs] def save(self, *args, **kwargs):
adding = self._state.adding
super().save(*args, **kwargs)
if adding:
self.set_default_interfaces()
self.assign_permissions()
for admin in self.challenge.get_admins():
if not is_following(admin, self):
follow(
user=admin,
obj=self,
actor_only=False,
send_action=False,
)
if self.public != self._orig_public:
on_commit(
assign_evaluation_permissions.signature(
kwargs={"phase_pks": [self.pk]}
).apply_async
)
on_commit(
assign_submission_permissions.signature(
kwargs={"phase_pk": self.pk}
).apply_async
)
on_commit(
lambda: calculate_ranks.apply_async(kwargs={"phase_pk": self.pk})
)
[docs] def clean(self):
super().clean()
if (
self.submission_kind == SubmissionKindChoices.ALGORITHM
and not self.creator_must_be_verified
):
raise ValidationError(
"For phases that take an algorithm as submission input, "
"the creator_must_be_verified box needs to be checked."
)
if self.submission_limit > 0 and not self.latest_executable_image:
raise ValidationError(
"You need to first add a valid method for this phase before you "
"can change the submission limit to above 0."
)
if (
self.submission_limit > 0
and self.submission_kind == SubmissionKindChoices.ALGORITHM
and (
not self.archive
or not self.algorithm_inputs
or not self.algorithm_outputs
)
):
raise ValidationError(
"To change the submission limit to above 0, you need to first link an archive containing the secret "
"test data to this phase and define the inputs and outputs that the submitted algorithms need to "
"read/write. To configure these settings, please get in touch with support@grand-challenge.org."
)
if (
self.submissions_open_at
and self.submissions_close_at
and self.submissions_close_at < self.submissions_open_at
):
raise ValidationError(
"The submissions close date needs to be after "
"the submissions open date."
)
if not self.public and self.open_for_submissions:
raise ValidationError(
"A phase can only be hidden if it is closed for submissions. "
"To close submissions for this phase, either set "
"submission_limit to 0, or set appropriate phase start / end dates."
)
def set_default_interfaces(self):
self.inputs.set(
[ComponentInterface.objects.get(slug="predictions-csv-file")]
)
self.outputs.set(
[ComponentInterface.objects.get(slug="metrics-json-file")]
)
def assign_permissions(self):
assign_perm("view_phase", self.challenge.admins_group, self)
assign_perm("change_phase", self.challenge.admins_group, self)
assign_perm(
"create_phase_submission", self.challenge.admins_group, self
)
assign_perm(
"create_phase_submission", self.challenge.participants_group, self
)
def get_absolute_url(self):
return reverse(
"pages:home",
kwargs={"challenge_short_name": self.challenge.short_name},
)
@property
def submission_limit_period_timedelta(self):
return timedelta(days=self.submission_limit_period)
[docs] def get_next_submission(self, *, user):
"""
Determines the number of submissions left for the user,
and when they can next submit.
"""
now = timezone.now()
if not self.open_for_submissions:
remaining_submissions = 0
next_sub_at = None
else:
filter_kwargs = {"creator": user}
if self.submission_limit_period is not None:
filter_kwargs.update(
{
"created__gte": now
- self.submission_limit_period_timedelta
}
)
evals_in_period = (
self.submission_set.filter(**filter_kwargs)
.exclude(evaluation__status=Evaluation.FAILURE)
.distinct()
.order_by("-created")
)
remaining_submissions = max(
0, self.submission_limit - evals_in_period.count()
)
if remaining_submissions:
next_sub_at = now
elif (
self.submission_limit == 0
or self.submission_limit_period is None
):
# User is never going to be able to submit again
next_sub_at = None
else:
next_sub_at = (
evals_in_period[self.submission_limit - 1].created
+ self.submission_limit_period_timedelta
)
return {
"remaining_submissions": remaining_submissions,
"next_submission_at": next_sub_at,
}
def has_pending_evaluations(self, *, user):
return (
Evaluation.objects.filter(
submission__phase=self, submission__creator=user
)
.exclude(
status__in=(
Evaluation.SUCCESS,
Evaluation.FAILURE,
Evaluation.CANCELLED,
)
)
.exists()
)
@property
def submission_period_is_open_now(self):
now = timezone.now()
upper_bound = self.submissions_close_at or now + timedelta(days=1)
lower_bound = self.submissions_open_at or now - timedelta(days=1)
return lower_bound < now < upper_bound
@property
def open_for_submissions(self):
return self.submission_period_is_open_now and self.submission_limit > 0
@property
def status(self):
now = timezone.now()
if self.open_for_submissions:
return StatusChoices.OPEN
else:
if self.submissions_open_at and now < self.submissions_open_at:
return StatusChoices.OPENING_SOON
elif self.submissions_close_at and now > self.submissions_close_at:
return StatusChoices.COMPLETED
else:
return StatusChoices.CLOSED
@property
def submission_status_string(self):
if self.status == StatusChoices.OPEN and self.submissions_close_at:
return (
f"Accepting submissions for {self.title} until "
f'{localtime(self.submissions_close_at).strftime("%b %d %Y at %H:%M")}'
)
elif (
self.status == StatusChoices.OPEN and not self.submissions_close_at
):
return f"Accepting submissions for {self.title}"
elif self.status == StatusChoices.OPENING_SOON:
return (
f"Opening submissions for {self.title} on "
f'{localtime(self.submissions_open_at).strftime("%b %d %Y at %H:%M")}'
)
elif self.status == StatusChoices.COMPLETED:
return f"{self.title} completed"
elif self.status == StatusChoices.CLOSED:
return "Not accepting submissions"
else:
raise NotImplementedError(f"{self.status} not implemented")
@property
def inconsistent_submission_information(self):
return (
self.submission_limit == 0 and self.submission_period_is_open_now
)
@property
def latest_executable_image(self):
if self.method_set.all():
return (
self.method_set.executable_images()
.order_by("-created")
.first()
)
else:
return None
class PhaseUserObjectPermission(UserObjectPermissionBase):
content_object = models.ForeignKey(Phase, on_delete=models.CASCADE)
class PhaseGroupObjectPermission(GroupObjectPermissionBase):
content_object = models.ForeignKey(Phase, on_delete=models.CASCADE)
class Method(UUIDModel, ComponentImage):
"""Store the methods for performing an evaluation."""
phase = models.ForeignKey(Phase, on_delete=models.PROTECT, null=True)
def save(self, *args, **kwargs):
adding = self._state.adding
super().save(*args, **kwargs)
if adding:
self.assign_permissions()
def assign_permissions(self):
assign_perm("view_method", self.phase.challenge.admins_group, self)
def get_absolute_url(self):
return reverse(
"evaluation:method-detail",
kwargs={
"pk": self.pk,
"challenge_short_name": self.phase.challenge.short_name,
},
)
class MethodUserObjectPermission(UserObjectPermissionBase):
content_object = models.ForeignKey(Method, on_delete=models.CASCADE)
class MethodGroupObjectPermission(GroupObjectPermissionBase):
content_object = models.ForeignKey(Method, on_delete=models.CASCADE)
def submission_file_path(instance, filename):
# Must match the protected serving url
return (
f"{settings.EVALUATION_FILES_SUBDIRECTORY}/"
f"{instance.phase.challenge.pk}/"
f"submissions/"
f"{instance.creator.pk}/"
f"{instance.pk}/"
f"{get_valid_filename(filename)}"
)
def submission_supplementary_file_path(instance, filename):
return (
f"evaluation-supplementary/"
f"{instance.phase.challenge.pk}/"
f"{instance.pk}/"
f"{get_valid_filename(filename)}"
)
class Submission(UUIDModel):
"""Store files for evaluation."""
creator = models.ForeignKey(
settings.AUTH_USER_MODEL, null=True, on_delete=models.SET_NULL
)
phase = models.ForeignKey(Phase, on_delete=models.PROTECT, null=True)
algorithm_image = models.ForeignKey(
AlgorithmImage, null=True, on_delete=models.SET_NULL
)
user_upload = models.ForeignKey(
UserUpload, blank=True, null=True, on_delete=models.SET_NULL
)
predictions_file = models.FileField(
upload_to=submission_file_path,
validators=[
MimeTypeValidator(allowed_types=("application/zip", "text/plain")),
ExtensionValidator(allowed_extensions=(".zip", ".csv")),
],
storage=protected_s3_storage,
blank=True,
)
supplementary_file = models.FileField(
upload_to=submission_supplementary_file_path,
storage=public_s3_storage,
validators=[
MimeTypeValidator(allowed_types=("text/plain", "application/pdf"))
],
blank=True,
)
comment = models.CharField(
max_length=128,
blank=True,
default="",
help_text=(
"You can add a comment here to help you keep track of your "
"submissions."
),
)
supplementary_url = models.URLField(
blank=True, help_text="A URL associated with this submission."
)
class Meta:
unique_together = (("phase", "predictions_file", "algorithm_image"),)
def save(self, *args, **kwargs):
adding = self._state.adding
super().save(*args, **kwargs)
if adding:
self.assign_permissions()
if not is_following(self.creator, self.phase):
follow(
user=self.creator,
obj=self.phase,
actor_only=False,
send_action=False,
)
e = create_evaluation.signature(
kwargs={"submission_pk": self.pk}, immutable=True
)
on_commit(e.apply_async)
def assign_permissions(self):
assign_perm("view_submission", self.phase.challenge.admins_group, self)
if self.phase.public:
assign_perm("view_submission", self.creator, self)
else:
remove_perm("view_submission", self.creator, self)
def get_absolute_url(self):
return reverse(
"evaluation:submission-detail",
kwargs={
"pk": self.pk,
"challenge_short_name": self.phase.challenge.short_name,
},
)
class SubmissionUserObjectPermission(UserObjectPermissionBase):
content_object = models.ForeignKey(Submission, on_delete=models.CASCADE)
class SubmissionGroupObjectPermission(GroupObjectPermissionBase):
content_object = models.ForeignKey(Submission, on_delete=models.CASCADE)
class Evaluation(UUIDModel, ComponentJob):
"""Stores information about a evaluation for a given submission."""
submission = models.ForeignKey("Submission", on_delete=models.PROTECT)
method = models.ForeignKey("Method", on_delete=models.PROTECT)
published = models.BooleanField(default=True, db_index=True)
rank = models.PositiveIntegerField(
default=0,
help_text=(
"The position of this result on the leaderboard. If the value is "
"zero, then the result is unranked."
),
db_index=True,
)
rank_score = models.FloatField(default=0.0)
rank_per_metric = models.JSONField(default=dict)
def save(self, *args, **kwargs):
adding = self._state.adding
if adding:
self.published = self.submission.phase.auto_publish_new_results
super().save(*args, **kwargs)
self.assign_permissions()
on_commit(
lambda: calculate_ranks.apply_async(
kwargs={"phase_pk": self.submission.phase.pk}
)
)
@property
def title(self):
return f"#{self.rank} {self.submission.creator.username}"
def assign_permissions(self):
admins_group = self.submission.phase.challenge.admins_group
assign_perm("view_evaluation", admins_group, self)
assign_perm("change_evaluation", admins_group, self)
all_user_group = Group.objects.get(
name=settings.REGISTERED_AND_ANON_USERS_GROUP_NAME
)
all_users_can_view = (
self.published
and self.submission.phase.public
and not self.submission.phase.challenge.hidden
)
if all_users_can_view:
assign_perm("view_evaluation", all_user_group, self)
else:
remove_perm("view_evaluation", all_user_group, self)
participants_can_view = (
self.published
and self.submission.phase.public
and self.submission.phase.challenge.hidden
)
participants_group = self.submission.phase.challenge.participants_group
if participants_can_view:
assign_perm("view_evaluation", participants_group, self)
else:
remove_perm("view_evaluation", participants_group, self)
@property
def container(self):
return self.method
@property
def output_interfaces(self):
return self.submission.phase.outputs
@cached_property
def metrics_json_file(self):
for output in self.outputs.all():
if output.interface.slug == "metrics-json-file":
return output.value
def clean(self):
if self.submission.phase != self.method.phase:
raise ValidationError(
"The submission and method phases should"
"be the same. You are trying to evaluate a"
f"submission for {self.submission.phase}"
f"with a method for {self.method.phase}"
)
super().clean()
def update_status(self, *args, **kwargs):
res = super().update_status(*args, **kwargs)
if self.status == self.FAILURE:
Notification.send(
type=NotificationType.NotificationTypeChoices.EVALUATION_STATUS,
actor=self.submission.creator,
message="failed",
action_object=self,
target=self.submission.phase,
)
if self.status == self.SUCCESS:
Notification.send(
type=NotificationType.NotificationTypeChoices.EVALUATION_STATUS,
actor=self.submission.creator,
message="succeeded",
action_object=self,
target=self.submission.phase,
)
return res
def get_absolute_url(self):
return reverse(
"evaluation:detail",
kwargs={
"pk": self.pk,
"challenge_short_name": self.submission.phase.challenge.short_name,
},
)
class EvaluationUserObjectPermission(UserObjectPermissionBase):
content_object = models.ForeignKey(Evaluation, on_delete=models.CASCADE)
class EvaluationGroupObjectPermission(GroupObjectPermissionBase):
content_object = models.ForeignKey(Evaluation, on_delete=models.CASCADE)