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transitionapproval.py
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transitionapproval.py
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import logging
from django.db.models import CASCADE, PROTECT, SET_NULL
from mptt.fields import TreeOneToOneField
from river.models import TransitionApprovalMeta, Workflow
from river.models.transition import Transition
try:
from django.contrib.contenttypes.fields import GenericForeignKey
except ImportError:
from django.contrib.contenttypes.generic import GenericForeignKey
from django.db import models
from django.utils.translation import ugettext_lazy as _
from river.models.base_model import BaseModel
from river.models.managers.transitionapproval import TransitionApprovalManager
from river.config import app_config
PENDING = "pending"
APPROVED = "approved"
JUMPED = "jumped"
CANCELLED = "cancelled"
STATUSES = [
(PENDING, _('Pending')),
(APPROVED, _('Approved')),
(CANCELLED, _('Cancelled')),
(JUMPED, _('Jumped')),
]
LOGGER = logging.getLogger(__name__)
class TransitionApproval(BaseModel):
class Meta:
app_label = 'river'
verbose_name = _("Transition Approval")
verbose_name_plural = _("Transition Approvals")
objects = TransitionApprovalManager()
content_type = models.ForeignKey(app_config.CONTENT_TYPE_CLASS, verbose_name=_('Content Type'), on_delete=CASCADE)
object_id = models.CharField(max_length=50, verbose_name=_('Related Object'))
workflow_object = GenericForeignKey('content_type', 'object_id')
meta = models.ForeignKey(TransitionApprovalMeta, verbose_name=_('Meta'), related_name="transition_approvals", null=True, blank=True, on_delete=SET_NULL)
workflow = models.ForeignKey(Workflow, verbose_name=_("Workflow"), related_name='transition_approvals', on_delete=PROTECT)
transition = models.ForeignKey(Transition, verbose_name=_("Transition"), related_name='transition_approvals', on_delete=PROTECT)
transactioner = models.ForeignKey(app_config.USER_CLASS, verbose_name=_('Transactioner'), null=True, blank=True, on_delete=SET_NULL)
transaction_date = models.DateTimeField(null=True, blank=True)
status = models.CharField(_('Status'), choices=STATUSES, max_length=100, default=PENDING)
permissions = models.ManyToManyField(app_config.PERMISSION_CLASS, verbose_name=_('Permissions'))
groups = models.ManyToManyField(app_config.GROUP_CLASS, verbose_name=_('Groups'))
priority = models.IntegerField(default=0, verbose_name=_('Priority'))
previous = TreeOneToOneField("self", verbose_name=_('Previous Transition'), related_name="next_transition", null=True, blank=True, on_delete=CASCADE)
@property
def peers(self):
return TransitionApproval.objects.filter(
workflow_object=self.workflow_object,
workflow=self.workflow,
transition=self.transition,
).exclude(pk=self.pk)