Unfloyded/Legamunt
0
0
Fork 0
Code Activity

Adding sync of follow relationships to Neo4J, accounts/suggestions API

Browse source
This commit is contained in:
Eugen Rochko 2016-10-14 23:10:07 +02:00
parent 91144d46ec
commit e21a3fe0cd
11 changed files with 76 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

24
app/models/follow.rb
View file

@ -22,4 +22,28 @@ class Follow < ApplicationRecord
def title
destroyed? ? "#{account.acct} is no longer following #{target_account.acct}" : "#{account.acct} started following #{target_account.acct}"
end
after_create :add_to_graph
after_destroy :remove_from_graph
private
def add_to_graph
neo = Neography::Rest.new
a = neo.create_unique_node('account_index', 'Account', account_id.to_s, account_id: account_id)
b = neo.create_unique_node('account_index', 'Account', target_account_id.to_s, account_id: target_account_id)
neo.create_unique_relationship('follow_index', 'Follow', id.to_s, 'follows', a, b)
rescue Neography::NeographyError => e
Rails.logger.error e
end
def remove_from_graph
neo = Neography::Rest.new
rel = neo.get_relationship_index('follow_index', 'Follow', id.to_s)
neo.delete_relationship(rel)
rescue Neography::NeographyError => e
Rails.logger.error e
end
end

7
app/models/follow_suggestion.rb Normal file
View file

@ -0,0 +1,7 @@
class FollowSuggestion
def self.get(for_account_id)
neo = Neography::Rest.new
account_ids = neo.execute_query('START a=node:account_index(Account={id}) MATCH (a)-[:follows]->(b)-[:follows]->(c) WHERE a <> c AND NOT (a)-[:follows]->(c) RETURN DISTINCT c.account_id', id: for_account_id)
Account.where(id: account_ids['data'].first) unless account_ids.empty?
end
end