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from peewee import *
from playhouse.fields import CompressedField
import datetime
db = SqliteDatabase('test.db', pragmas=[('foreign_keys', 'ON')])
__tables__ = []
__all__ = ['create_tables', 'drop_tables']
def table(cls):
__tables__.append(cls)
__all__.append(cls.__name__)
return cls
def create_tables():
db.create_tables(__tables__, True)
def drop_tables():
db.drop_tables(__tables__, True)
class BaseModel(Model):
class Meta:
database = db
@table
class Document(BaseModel):
content = CompressedField()
created = DateTimeField(default=datetime.datetime.now)
description = CharField(null=True)
direction = BooleanField(null=True)
original_path = CharField(null=True)
@table
class Prefix(BaseModel):
name = CharField(null=True, unique=True)
builtin = BooleanField(default = False)
pseudo = BooleanField(default = False)
@table
class Tag(BaseModel):
name = CharField()
prefix = ForeignKeyField(Prefix, null=True, related_name = 'tag')
@table
class DocumentTag(BaseModel):
document = ForeignKeyField(Document, related_name = 'tags')
tag = ForeignKeyField(Tag)
class Meta:
primary_key = CompositeKey('document', 'tag')
@table
class TagImplications(BaseModel):
tag = ForeignKeyField(Tag)
implies_tag = ForeignKeyField(Tag, related_name = 'implications')
class Meta:
primary_key = CompositeKey('tag', 'implies_tag')
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