90 lines
2.6 KiB
Python
90 lines
2.6 KiB
Python
from sqlalchemy import and_, distinct, func, select
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from sqlalchemy.orm import aliased
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from orm.author import Author
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from orm.community import Community, CommunityAuthor
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from orm.shout import ShoutCommunity
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from services.db import local_session
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from services.schema import query
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from services.logger import root_logger as logger
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def add_community_stat_columns(q):
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community_followers = aliased(CommunityAuthor)
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shout_community_aliased = aliased(ShoutCommunity)
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q = q.outerjoin(shout_community_aliased).add_columns(
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func.count(distinct(shout_community_aliased.shout)).label('shouts_stat')
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)
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q = q.outerjoin(
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community_followers, community_followers.author == Author.id
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).add_columns(
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func.count(distinct(community_followers.follower)).label('followers_stat')
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)
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q = q.group_by(Author.id)
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return q
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def get_communities_from_query(q):
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ccc = []
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with local_session() as session:
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for [c, shouts_stat, followers_stat] in session.execute(q):
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c.stat = {
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'shouts': shouts_stat,
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'followers': followers_stat,
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# "commented": commented_stat,
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}
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ccc.append(c)
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return ccc
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# for mutation.field("follow")
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def community_follow(follower_id, slug):
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try:
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with local_session() as session:
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community = session.query(Community).where(Community.slug == slug).first()
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if isinstance(community, Community):
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cf = CommunityAuthor(author=follower_id, community=community.id)
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session.add(cf)
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session.commit()
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return True
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except Exception as ex:
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logger.debug(ex)
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return False
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# for mutation.field("unfollow")
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def community_unfollow(follower_id, slug):
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with local_session() as session:
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flw = (
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session.query(CommunityAuthor)
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.join(Community, Community.id == CommunityAuthor.community)
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.filter(and_(CommunityAuthor.author == follower_id, Community.slug == slug))
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.first()
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)
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if flw:
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session.delete(flw)
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session.commit()
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return True
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return False
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@query.field('get_communities_all')
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async def get_communities_all(_, _info):
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q = select(Author)
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q = add_community_stat_columns(q)
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return get_communities_from_query(q)
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@query.field('get_community')
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async def get_community(_, _info, slug: str):
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q = select(Community).where(Community.slug == slug)
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q = add_community_stat_columns(q)
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communities = get_communities_from_query(q)
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return communities[0]
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