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134 lines
3.8 KiB
Python
134 lines
3.8 KiB
Python
from django.db import connection, models
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from .fields import (
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ArrayField, BigIntegerRangeField, DateRangeField, DateTimeRangeField,
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FloatRangeField, HStoreField, IntegerRangeField, JSONField,
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)
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class Tag(object):
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def __init__(self, tag_id):
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self.tag_id = tag_id
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def __eq__(self, other):
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return isinstance(other, Tag) and self.tag_id == other.tag_id
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class TagField(models.SmallIntegerField):
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def from_db_value(self, value, expression, connection, context):
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if value is None:
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return value
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return Tag(int(value))
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def to_python(self, value):
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if isinstance(value, Tag):
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return value
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if value is None:
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return value
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return Tag(int(value))
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def get_prep_value(self, value):
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return value.tag_id
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class PostgreSQLModel(models.Model):
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class Meta:
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abstract = True
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required_db_vendor = 'postgresql'
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class IntegerArrayModel(PostgreSQLModel):
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field = ArrayField(models.IntegerField())
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class NullableIntegerArrayModel(PostgreSQLModel):
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field = ArrayField(models.IntegerField(), blank=True, null=True)
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class CharArrayModel(PostgreSQLModel):
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field = ArrayField(models.CharField(max_length=10))
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class DateTimeArrayModel(PostgreSQLModel):
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datetimes = ArrayField(models.DateTimeField())
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dates = ArrayField(models.DateField())
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times = ArrayField(models.TimeField())
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class NestedIntegerArrayModel(PostgreSQLModel):
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field = ArrayField(ArrayField(models.IntegerField()))
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class OtherTypesArrayModel(PostgreSQLModel):
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ips = ArrayField(models.GenericIPAddressField())
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uuids = ArrayField(models.UUIDField())
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decimals = ArrayField(models.DecimalField(max_digits=5, decimal_places=2))
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tags = ArrayField(TagField(), blank=True, null=True)
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class HStoreModel(PostgreSQLModel):
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field = HStoreField(blank=True, null=True)
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class CharFieldModel(models.Model):
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field = models.CharField(max_length=16)
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class TextFieldModel(models.Model):
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field = models.TextField()
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class RangesModel(PostgreSQLModel):
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ints = IntegerRangeField(blank=True, null=True)
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bigints = BigIntegerRangeField(blank=True, null=True)
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floats = FloatRangeField(blank=True, null=True)
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timestamps = DateTimeRangeField(blank=True, null=True)
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dates = DateRangeField(blank=True, null=True)
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class RangeLookupsModel(PostgreSQLModel):
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parent = models.ForeignKey(RangesModel, models.SET_NULL, blank=True, null=True)
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integer = models.IntegerField(blank=True, null=True)
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big_integer = models.BigIntegerField(blank=True, null=True)
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float = models.FloatField(blank=True, null=True)
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timestamp = models.DateTimeField(blank=True, null=True)
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date = models.DateField(blank=True, null=True)
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# Only create this model for postgres >= 9.4
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if connection.vendor == 'postgresql' and connection.pg_version >= 90400:
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class JSONModel(models.Model):
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field = JSONField(blank=True, null=True)
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else:
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# create an object with this name so we don't have failing imports
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class JSONModel(object):
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pass
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class ArrayFieldSubclass(ArrayField):
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def __init__(self, *args, **kwargs):
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super(ArrayFieldSubclass, self).__init__(models.IntegerField())
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class AggregateTestModel(models.Model):
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"""
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To test postgres-specific general aggregation functions
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"""
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char_field = models.CharField(max_length=30, blank=True)
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integer_field = models.IntegerField(null=True)
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boolean_field = models.NullBooleanField()
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class StatTestModel(models.Model):
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"""
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To test postgres-specific aggregation functions for statistics
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"""
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int1 = models.IntegerField()
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int2 = models.IntegerField()
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related_field = models.ForeignKey(AggregateTestModel, models.SET_NULL, null=True)
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class NowTestModel(models.Model):
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when = models.DateTimeField(null=True, default=None)
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