refactored

resolvers/follower.py

@@ -12,7 +12,6 @@ from orm.community import Community
 from orm.reaction import Reaction
 from orm.shout import Shout, ShoutReactionsFollower
 from orm.topic import Topic, TopicFollower
-from resolvers.topic import topic_unfollow, topic_follow
 from resolvers.stat import get_with_stat, author_follows_topics, author_follows_authors
 from services.auth import login_required
 from services.db import local_session
@@ -156,6 +155,35 @@ async def get_follows_by_user_id(user_id: str):
     return follows
 
 
+def topic_follow(follower_id, slug):
+    try:
+        with local_session() as session:
+            topic = session.query(Topic).where(Topic.slug == slug).one()
+            _following = TopicFollower(topic=topic.id, follower=follower_id)
+        return None
+    except Exception as exc:
+        logger.error(exc)
+        return exc
+
+
+def topic_unfollow(follower_id, slug):
+    try:
+        with local_session() as session:
+            sub = (
+                session.query(TopicFollower)
+                .join(Topic)
+                .filter(and_(TopicFollower.follower == follower_id, Topic.slug == slug))
+                .first()
+            )
+            if sub:
+                session.delete(sub)
+                session.commit()
+        return None
+    except Exception as ex:
+        logger.debug(ex)
+        return ex
+
+
 def reactions_follow(author_id, shout_id, auto=False):
     try:
         with local_session() as session:

resolvers/topic.py

@@ -1,13 +1,12 @@
-from sqlalchemy import and_, distinct, func, select
+from sqlalchemy import distinct, func, select
 
 from orm.author import Author
 from orm.shout import ShoutTopic
-from orm.topic import Topic, TopicFollower
+from orm.topic import Topic
 from resolvers.stat import get_with_stat
 from services.auth import login_required
 from services.db import local_session
 from services.schema import mutation, query
-from services.logger import root_logger as logger
 
 
 @query.field('get_topics_all')
@@ -91,35 +90,6 @@ async def delete_topic(_, info, slug: str):
     return {'error': 'access denied'}
 
 
-def topic_follow(follower_id, slug):
-    try:
-        with local_session() as session:
-            topic = session.query(Topic).where(Topic.slug == slug).one()
-            _following = TopicFollower(topic=topic.id, follower=follower_id)
-        return None
-    except Exception as exc:
-        logger.error(exc)
-        return exc
-
-
-def topic_unfollow(follower_id, slug):
-    try:
-        with local_session() as session:
-            sub = (
-                session.query(TopicFollower)
-                .join(Topic)
-                .filter(and_(TopicFollower.follower == follower_id, Topic.slug == slug))
-                .first()
-            )
-            if sub:
-                session.delete(sub)
-                session.commit()
-        return None
-    except Exception as ex:
-        logger.debug(ex)
-        return ex
-
-
 @query.field('get_topics_random')
 def get_topics_random(_, _info, amount=12):
     q = select(Topic)

services/cache.py

@@ -166,21 +166,21 @@ def after_author_update(mapper, connection, author: Author):
 @event.listens_for(TopicFollower, 'after_insert')
 def after_topic_follower_insert(mapper, connection, target: TopicFollower):
     asyncio.create_task(
-        handle_topic_follower_change(connection, target.topic, target.follower, True)
+        handle_topic_follower_change(target.topic, target.follower, True)
     )
 
 
 @event.listens_for(TopicFollower, 'after_delete')
 def after_topic_follower_delete(mapper, connection, target: TopicFollower):
     asyncio.create_task(
-        handle_topic_follower_change(connection, target.topic, target.follower, False)
+        handle_topic_follower_change(target.topic, target.follower, False)
     )
 
 
 @event.listens_for(AuthorFollower, 'after_insert')
 def after_author_follower_insert(mapper, connection, target: AuthorFollower):
     asyncio.create_task(
-        handle_author_follower_change(connection, target.author, target.follower, True)
+        handle_author_follower_change(target.author, target.follower, True)
     )
 
 
@@ -224,9 +224,7 @@ async def handle_author_follower_change(
         )
 
 
-async def handle_topic_follower_change(
-    connection, topic_id: int, follower_id: int, is_insert: bool
-):
+async def handle_topic_follower_change(topic_id: int, follower_id: int, is_insert: bool):
     topic_query = select(Topic).filter(Topic.id == topic_id)
     [topic] = get_with_stat(topic_query)
     follower_query = select(Author).filter(Author.id == follower_id)