1 import uuid

     2 

     3 from concurrency.fields import AutoIncVersionField

     4 from django.conf import settings

     5 from django.core.exceptions import ValidationError

     6 from django.db import models

     7 from django.utils.translation import ugettext_lazy as _

     8 

     9 from .managers import MetacategoryManager, ProtocolManager

    10 

    11 # Create your models here.

    12 

    13 class Protocol(models.Model):

    14     ext_id = models.UUIDField(

    15         unique=True, default=uuid.uuid4, verbose_name=_('Model|ext_id'))

    16     owner = models.CharField(max_length=512, verbose_name=_('Protocol|owner'))

    17     app = models.ForeignKey(

    18         settings.AUTH_USER_MODEL,

    19         on_delete=models.CASCADE,

    20         null=True,

    21         blank=True

    22     )

    23 

    24     def last_revision(self):

    25         return self.revisions.first()

    26 

    27     objects = ProtocolManager()

    28 

    29 

    30 class ProtocolRevision(models.Model):

    31     ext_id = models.UUIDField(

    32         unique=True, default=uuid.uuid4, verbose_name=_('Model|ext_id'))

    33     protocol = models.ForeignKey(Protocol, on_delete=models.CASCADE,

    34                                  related_name="revisions", verbose_name=_('ProtocolRevision|protocol'))

    35     version = AutoIncVersionField(verbose_name=_('Model|version'), db_index=True)

    36     title = models.CharField(max_length=512, null=True,

    37                              blank=True, verbose_name=_('ProtocolRevision|title'))

    38     description = models.TextField(

    39         null=True,

    40         blank=True,

    41         verbose_name=_('ProtocolRevision|description')

    42     )

    43     metacategories = models.ManyToManyField('protocols.MetacategoryRevision', related_name="protocols")

    44 

    45     class Meta:

    46         ordering = ['-version',]

    47 

    48 class Metacategory(models.Model):

    49 

    50     objects = MetacategoryManager()

    51 

    52     ext_id = models.UUIDField(

    53         unique=True, default=uuid.uuid4, verbose_name=_('Model|ext_id'))

    54     app = models.ForeignKey(

    55         settings.AUTH_USER_MODEL,

    56         on_delete=models.SET_NULL,

    57         null=True,

    58         blank=True

    59     )

    60     label = models.CharField(max_length=512, verbose_name=_('Metacategory|label'))

    61     title = models.CharField(max_length=512, verbose_name=_('Metacategory|title'))

    62     description = models.TextField(

    63         null=True,

    64         blank=True,

    65         verbose_name=_('Metacategory|description')

    66     )

    67     color = models.CharField(max_length=18, verbose_name=_('Metacategory|color'))

    68     has_comment = models.BooleanField()

    69     is_default = models.BooleanField()

    70 

    71     def last_revision(self):

    72         return self.revisions.first()

    73 

    74 

    75 

    76 class MetacategoryRevision(models.Model):

    77     ext_id = models.UUIDField(

    78         unique=True, default=uuid.uuid4, verbose_name=_('Model|ext_id'))

    79     version = AutoIncVersionField(verbose_name=_('Model|version'), db_index=True)

    80     # protocol = models.ForeignKey(ProtocolRevision, on_delete=models.CASCADE)

    81     base = models.ForeignKey(Metacategory, on_delete=models.CASCADE,

    82                              related_name="revisions", verbose_name=_('MetacategoryRevision|base'))

    83     label = models.CharField(max_length=512, verbose_name=_('Metacategory|label'))

    84     title = models.CharField(max_length=512, verbose_name=_('Metacategory|title'))

    85     description = models.TextField(

    86         null=True,

    87         blank=True,

    88         verbose_name=_('Metacategory|description')

    89     )

    90     color = models.CharField(max_length=18, verbose_name=_('Metacategory|color'))

    91     has_comment = models.BooleanField()

    92 

    93     class Meta:

    94         ordering = ['-version',]