77 lines
2.1 KiB
Python
77 lines
2.1 KiB
Python
import enum
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import time
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from sqlalchemy import ARRAY, Column, ForeignKey, Integer, String, func
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from sqlalchemy.ext.hybrid import hybrid_property
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from sqlalchemy.orm import relationship
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from orm.author import Author
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from services.db import Base
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class CommunityRole(enum.Enum):
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AUTHOR = "author"
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READER = "reader"
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EDITOR = "editor"
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CRITIC = "critic"
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EXPERT = "expert"
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ARTIST = "artist"
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@classmethod
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def as_string_array(cls, roles):
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return [role.value for role in roles]
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class CommunityFollower(Base):
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__tablename__ = "community_author"
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author = Column(ForeignKey("author.id"), primary_key=True)
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community = Column(ForeignKey("community.id"), primary_key=True)
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joined_at = Column(Integer, nullable=False, default=lambda: int(time.time()))
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roles = Column(ARRAY(String), nullable=False, default=lambda: CommunityRole.as_string_array([CommunityRole.READER]))
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def set_roles(self, roles):
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self.roles = CommunityRole.as_string_array(roles)
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def get_roles(self):
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return [CommunityRole(role) for role in self.roles]
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class Community(Base):
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__tablename__ = "community"
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name = Column(String, nullable=False)
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slug = Column(String, nullable=False, unique=True)
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desc = Column(String, nullable=False, default="")
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pic = Column(String, nullable=False, default="")
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created_at = Column(Integer, nullable=False, default=lambda: int(time.time()))
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authors = relationship(Author, secondary="community_author")
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@hybrid_property
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def stat(self):
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return CommunityStats(self)
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class CommunityStats:
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def __init__(self, community):
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self.community = community
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@property
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def shouts(self):
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from orm.shout import ShoutCommunity
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return (
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self.community.session.query(func.count(ShoutCommunity.shout_id))
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.filter(ShoutCommunity.community_id == self.community.id)
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.scalar()
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)
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@property
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def followers(self):
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return (
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self.community.session.query(func.count(CommunityFollower.author))
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.filter(CommunityFollower.community == self.community.id)
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.scalar()
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)
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