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models.py
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Tue, May 21, 20:26

models.py
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from django.db import models
from django.contrib.auth.models import User
import datetime
from django.utils.translation import gettext as _
# Ref: database_model_20210421_MB.drawio 21.04.2021
class Country(models.Model):
name = models.CharField(verbose_name="Country name", max_length=120, null=True)
iso_code = models.CharField(max_length=3, null=True)
def __str__(self):
return f"{self.name}"
class Meta:
verbose_name_plural = 'Countries'
ordering = ('name',)
class Language(models.Model):
name = models.CharField(verbose_name="Language name", max_length=120, null=True)
iso_code = models.CharField(max_length=3, null=True)
def __str__(self):
return f"{self.name}"
class Meta:
ordering = ('name',)
class Oa(models.Model):
status = models.CharField(max_length=1000, null=True)
description = models.CharField(max_length=1000, null=True)
subscription = models.BooleanField(default=False)
accepted_manuscript = models.BooleanField(default=False)
apc = models.BooleanField(default=False)
final_version = models.BooleanField(default=False)
def __str__(self):
return f"{self.status}"
class Meta:
ordering = ('-subscription',)
verbose_name = "Open Access status"
verbose_name_plural = "Open Access statuses"
class Publisher(models.Model):
name = models.CharField(verbose_name="Publisher name", max_length=1000, null=True)
city = models.CharField(max_length=100, null=True)
state = models.CharField(max_length=3, null=True)
country = models.ManyToManyField("Country")
starting_year = models.IntegerField(blank=True, null=True)
website = models.URLField(max_length=1000)
oa_policies = models.URLField(max_length=1000)
def __str__(self):
return f"{self.name}"
class Meta:
ordering = ('name',)
class Issn(models.Model):
PRINT = '1'
ELECTRONIC = '2'
OTHER = '3'
TYPE_CHOICES = (
(PRINT, 'Print'),
(ELECTRONIC, 'Electronic'),
(OTHER, 'Other'),
)
journal = models.ForeignKey("Journal", null=True, on_delete=models.CASCADE, related_name = "classIssn") #journal.classissn
issn = models.CharField(max_length=9, null=False)
issn_type = models.CharField(
choices=TYPE_CHOICES,
max_length=10,
blank=True
)
def __str__(self):
return f"{self.issn} ({dict(self.TYPE_CHOICES)[self.issn_type]})"
class Meta:
ordering = ('issn',)
class Journal(models.Model):
name = models.CharField(verbose_name="Journal name", max_length=800, blank=True, null=True) # search journal with name
name_short_iso_4 = models.CharField(max_length=300, blank=True, null=True)
publisher = models.ManyToManyField(Publisher)
website = models.URLField(max_length=300, blank=True, null=True)
language = models.ManyToManyField(Language)
# 2021-08-11: only one-to-many relationship between Journal and ISSN
# issn = models.ForeignKey("Issn", null=True, on_delete=models.CASCADE)
oa_options = models.URLField(max_length=1000, blank=True, null=True)
oa_status = models.ForeignKey("Oa", related_name ="oa_status", on_delete=models.CASCADE, null=True)
starting_year = models.IntegerField(blank=True, null=True)
end_year = models.IntegerField(blank=True, null=True)
doaj_seal = models.BooleanField(default=False)
doaj_status = models.BooleanField(default=False)
lockss = models.BooleanField(default=False)
nlch = models.BooleanField(default=False)
portico = models.BooleanField(default=False)
qoam_av_score = models.DecimalField(decimal_places=2, max_digits=5, blank=True, null=True)
def __str__(self):
return f"{self.name} from {self.website}"
class Meta:
ordering = ('name',)
class Organization(models.Model):
name = models.CharField(verbose_name="Organization name", max_length=600, null=True)
website = models.URLField(max_length=600, blank=True, null=True)
country = models.ManyToManyField("Country")
ror = models.CharField(max_length=255, blank=True, null=True)
fundref = models.CharField(max_length=255, blank=True, null=True)
starting_year = models.IntegerField(blank=True, null=True)
is_funder = models.BooleanField(default=False)
ir_name = models.CharField(verbose_name="Institutional repository name", max_length=40, null=True, blank=True)
ir_url = models.URLField(verbose_name="Institutional repository URL", max_length=100, null=True, blank=True)
def __str__(self):
return f"{self.name}"
class Meta:
ordering = ('name',)
class Version(models.Model):
description = models.CharField(max_length=300, null=False)
def __str__(self):
return f"{self.description}"
class Licence(models.Model):
name_or_abbrev = models.CharField(max_length=300, null=False)
website = models.URLField(max_length=600, null=True, blank=True)
class Meta:
ordering = ('name_or_abbrev',)
def __str__(self):
return f"{self.name_or_abbrev}"
class Cost_factor_type(models.Model):
name = models.CharField(max_length=300, null=False)
def __str__(self):
return f"{self.name}"
class Cost_factor(models.Model):
cost_factor_type = models.ForeignKey(Cost_factor_type, on_delete=models.CASCADE, blank=True, null=True)
amount = models.IntegerField(null=False)
symbol = models.CharField(max_length=10, null=False)
comment = models.CharField(max_length=120, default="")
class Meta:
ordering = ('amount',)
def __str__(self):
return f"{self.id} - {self.amount} {self.symbol} - {self.comment}"
class Term(models.Model):
version = models.ManyToManyField(Version)
cost_factor = models.ManyToManyField(Cost_factor)
licence = models.ManyToManyField(Licence)
embargo_months = models.IntegerField(blank=True, null=True)
ir_archiving = models.BooleanField(default=False)
comment = models.CharField(max_length=600, null=True, blank=True)
def __str__(self):
try:
# Maybe these fields should not allow NULL values?
if self.embargo_months is None:
embargo = 'no_'
else:
embargo = str(self.embargo_months)
if self.comment is None:
comment = ''
else:
comment = str(self.comment)
term_data = (str(self.id),
';'.join([str(x) for x in self.version.all()]),
';'.join([str(x) for x in self.licence.all()]),
';'.join([str(x) for x in self.cost_factor.all()]),
f'Archiving{str(self.ir_archiving)} {embargo}months',
comment,)
return ' - '.join(term_data)
except RecursionError:
# The JSON import in the admin module somehow throws a ValueError during the loading process
# probably due to incomplete information in the many2many relationships
# Then the error log apparently triggers a cascade of errors until
# the RecursionError level is hit. Falling back to a basic __str__
# for the RecursionError seems to bypass the problem.
return f"[Term.__str__() error] {self.id} - {self.comment}"
class Meta:
ordering = ('-ir_archiving', 'embargo_months', 'comment')
class ConditionType(models.Model):
condition_issuer = models.CharField(max_length=300, null=False)
def __str__(self):
return f"{self.condition_issuer}"
class ConditionSet(models.Model):
condition_type = models.ForeignKey(ConditionType, on_delete=models.CASCADE, blank=True, null=True)
organization = models.ManyToManyField(
Organization,
through='OrganizationCondition',
through_fields=('condition_set', 'organization')
)
journal = models.ManyToManyField(
Journal,
through='JournalCondition',
through_fields=('condition_set', 'journal')
)
term = models.ManyToManyField(Term)
source = models.URLField(max_length=600, null=True, blank=True)
comment = models.CharField(max_length=100, null=True, blank=True)
def __str__(self):
return f"{self.id} {self.condition_type}|{self.comment}"
class Meta:
ordering = ('-condition_type__pk','comment')
class OrganizationCondition(models.Model):
organization = models.ForeignKey(Organization, on_delete=models.CASCADE, blank=True, null=True)
condition_set = models.ForeignKey(ConditionSet, on_delete=models.CASCADE, blank=True, null=True)
valid_from = models.DateField(blank=True, null=True)
valid_until = models.DateField(blank=True, null=True)
class Meta:
verbose_name = "Organization/condition_set relationship"
def __str__(self):
return f"{self.id} {self.organization.name}/ConditionSet {self.condition_set.id}"
class JournalCondition(models.Model):
journal = models.ForeignKey(Journal, on_delete=models.CASCADE, blank=True, null=True)
condition_set = models.ForeignKey(ConditionSet, on_delete=models.CASCADE, blank=True, null=True)
valid_from = models.DateField(blank=True, null=True)
valid_until = models.DateField(blank=True, null=True)
class Meta:
verbose_name = "Journal/condition_set relationship"
def __str__(self):
return f"{self.id} {self.journal.name}/{self.condition_set}"

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