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"""
Tests for F() query expression syntax.
"""
import uuid
from django.db import models
class Manager(models.Model):
name = models.CharField(max_length=50)
secretary = models.ForeignKey(
"Employee", models.CASCADE, null=True, related_name="managers"
)
class Employee(models.Model):
firstname = models.CharField(max_length=50)
lastname = models.CharField(max_length=50)
salary = models.IntegerField(blank=True, null=True)
manager = models.ForeignKey(Manager, models.CASCADE, null=True)
based_in_eu = models.BooleanField(default=False)
def __str__(self):
return "%s %s" % (self.firstname, self.lastname)
class RemoteEmployee(Employee):
adjusted_salary = models.IntegerField()
class Company(models.Model):
name = models.CharField(max_length=100)
num_employees = models.PositiveIntegerField()
num_chairs = models.PositiveIntegerField()
ceo = models.ForeignKey(
Employee,
models.CASCADE,
related_name="company_ceo_set",
)
point_of_contact = models.ForeignKey(
Employee,
models.SET_NULL,
related_name="company_point_of_contact_set",
null=True,
)
based_in_eu = models.BooleanField(default=False)
def __str__(self):
return self.name
class Number(models.Model):
integer = models.BigIntegerField(db_column="the_integer")
float = models.FloatField(null=True, db_column="the_float")
decimal_value = models.DecimalField(max_digits=20, decimal_places=17, null=True)
def __str__(self):
return "%i, %.3f, %.17f" % (self.integer, self.float, self.decimal_value)
class Experiment(models.Model):
name = models.CharField(max_length=24)
assigned = models.DateField()
completed = models.DateField()
estimated_time = models.DurationField()
start = models.DateTimeField()
end = models.DateTimeField()
scalar = models.IntegerField(null=True)
class Meta:
db_table = "expressions_ExPeRiMeNt"
ordering = ("name",)
def duration(self):
return self.end - self.start
class Result(models.Model):
experiment = models.ForeignKey(Experiment, models.CASCADE)
result_time = models.DateTimeField()
def __str__(self):
return "Result at %s" % self.result_time
class Time(models.Model):
time = models.TimeField(null=True)
def __str__(self):
return str(self.time)
class SimulationRun(models.Model):
start = models.ForeignKey(Time, models.CASCADE, null=True, related_name="+")
end = models.ForeignKey(Time, models.CASCADE, null=True, related_name="+")
midpoint = models.TimeField()
def __str__(self):
return "%s (%s to %s)" % (self.midpoint, self.start, self.end)
class UUIDPK(models.Model):
id = models.UUIDField(primary_key=True, default=uuid.uuid4)
class UUID(models.Model):
uuid = models.UUIDField(null=True)
uuid_fk = models.ForeignKey(UUIDPK, models.CASCADE, null=True)
class JSONFieldModel(models.Model):
data = models.JSONField(null=True)
class Meta:
required_db_features = {"supports_json_field"}
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