platypush/platypush/entities/dimmers.py
Fabio Manganiello d872835093
New API to check if a table class exists before defining it.
- Check if it's part of the metadata through a function call rather than
  checking `Base.metadata` in every single module.

- Make it possible to override them (mostly for doc generation logic
  that needs to be able to import those classes).

- Make it possible to extend them.
2023-10-09 01:33:44 +02:00

30 lines
803 B
Python

from sqlalchemy import Column, Integer, ForeignKey, Float, String
from platypush.common.db import is_defined
from .devices import Device
if not is_defined('dimmer'):
class Dimmer(Device):
"""
This class models dimmer entities. A dimmer is any actionable entity
with numeric values and an optional min/max range.
"""
__tablename__ = 'dimmer'
id = Column(
Integer, ForeignKey(Device.id, ondelete='CASCADE'), primary_key=True
)
min = Column(Float)
max = Column(Float)
step = Column(Float, default=1.0)
value = Column(Float)
unit = Column(String)
__table_args__ = {'extend_existing': True}
__mapper_args__ = {
'polymorphic_identity': __tablename__,
}