53 lines
1.9 KiB
Python
53 lines
1.9 KiB
Python
from django.db import models
|
|
from django.db.models import Q
|
|
|
|
from .workspace import WorkspaceBaseModel
|
|
|
|
|
|
class Label(WorkspaceBaseModel):
|
|
parent = models.ForeignKey(
|
|
"self",
|
|
on_delete=models.CASCADE,
|
|
null=True,
|
|
blank=True,
|
|
related_name="parent_label",
|
|
)
|
|
name = models.CharField(max_length=255)
|
|
description = models.TextField(blank=True)
|
|
color = models.CharField(max_length=255, blank=True)
|
|
sort_order = models.FloatField(default=65535)
|
|
external_source = models.CharField(max_length=255, null=True, blank=True)
|
|
external_id = models.CharField(max_length=255, blank=True, null=True)
|
|
|
|
class Meta:
|
|
constraints = [
|
|
# Enforce uniqueness of name when project is NULL and deleted_at is NULL
|
|
models.UniqueConstraint(
|
|
fields=["name"],
|
|
condition=Q(project__isnull=True, deleted_at__isnull=True),
|
|
name="unique_name_when_project_null_and_not_deleted",
|
|
),
|
|
# Enforce uniqueness of project and name when project is not NULL and deleted_at is NULL
|
|
models.UniqueConstraint(
|
|
fields=["project", "name"],
|
|
condition=Q(project__isnull=False, deleted_at__isnull=True),
|
|
name="unique_project_name_when_not_deleted",
|
|
),
|
|
]
|
|
verbose_name = "Label"
|
|
verbose_name_plural = "Labels"
|
|
db_table = "labels"
|
|
ordering = ("-created_at",)
|
|
|
|
def save(self, *args, **kwargs):
|
|
if self._state.adding:
|
|
# Get the maximum sequence value from the database
|
|
last_id = Label.objects.filter(project=self.project).aggregate(largest=models.Max("sort_order"))["largest"]
|
|
# if last_id is not None
|
|
if last_id is not None:
|
|
self.sort_order = last_id + 10000
|
|
|
|
super(Label, self).save(*args, **kwargs)
|
|
|
|
def __str__(self):
|
|
return str(self.name)
|