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"""
Tests for F() query expression syntax.
"""
from __future__ import unicode_literals
import uuid
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
@python_2_unicode_compatible
class Employee(models.Model):
firstname = models.CharField(max_length=50)
lastname = models.CharField(max_length=50)
salary = models.IntegerField(blank=True, null=True)
def __str__(self):
return '%s %s' % (self.firstname, self.lastname)
@python_2_unicode_compatible
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)
def __str__(self):
return self.name
@python_2_unicode_compatible
class Number(models.Model):
integer = models.BigIntegerField(db_column='the_integer')
float = models.FloatField(null=True, db_column='the_float')
def __str__(self):
return '%i, %.3f' % (self.integer, self.float)
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()
class Meta:
db_table = 'expressions_ExPeRiMeNt'
ordering = ('name',)
def duration(self):
return self.end - self.start
@python_2_unicode_compatible
class Result(models.Model):
experiment = models.ForeignKey(Experiment, models.CASCADE)
result_time = models.DateTimeField()
def __str__(self):
return "Result at %s" % self.result_time
@python_2_unicode_compatible
class Time(models.Model):
time = models.TimeField(null=True)
def __str__(self):
return "%s" % self.time
@python_2_unicode_compatible
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)
@python_2_unicode_compatible
class UUID(models.Model):
uuid = models.UUIDField(null=True)
uuid_fk = models.ForeignKey(UUIDPK, models.CASCADE, null=True)
def __str__(self):
return "%s" % self.uuid
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