async def start_proccess(db, post):
hashtag = await db.get(Hashtag, name=post.tag)
posts_db = list(await db.execute(
Post.select(Post, Hashtag).join(Hashtag).where(
Hashtag.name == post.tag).order_by(Post.published_at)))
dates = [i.published_at for i in posts_db]
newest = True
if dates:
newest = post.published_at > max(dates)
if newest:
point = Point(post.location.lat, post.location.lng, srid=4326)
data = {
'hashtag_id': hashtag.id,
'published_at': post.published_at,
'url': post.url,
'location': post.location.name,
'point': point
}
await db.get_or_create(Post, **data)
if not posts_db:
return
hashtag.total_posts += 1
total_distance = hashtag.total_distance
last_point_in_db = posts_db[0].point
distance_between_last_points = await db.execute(
Post.raw(
"""
SELECT ST_Distance(
'SRID=4326;POINT(%s %s)'::geography,
'SRID=4326;POINT(%s %s)'::geography
)/1000 as distance
""", *point.coords, *last_point_in_db.coords))
distance_between_last_points = distance_between_last_points[0].distance
hashtag.total_distance = total_distance + distance_between_last_points
await db.update(hashtag)
async def get(self):
hashtag_name = self.request.match_info.get('hashtag')
if not hashtag_name:
return json_response(
{
'success': False,
'errors': 'hashtag is required'
},
status=400)
db = self.request.app['objects']
posts = await db.execute(
Post.select().join(Hashtag).where(Hashtag.name == hashtag_name))
data, _ = PostSerializer().dump(posts, many=True)
return json_response(data)