Duplicate relationship between nodes while creating them

[mrhardikjoshi]

When we initialize two nodes with mentioning relationship on both side, It creates two identical relationship between these two nodes. Should it only create one relationship instead?

Code example (inline, gist, or repo)

require 'neo4j'
require 'neo4j/core/cypher_session/adaptors/http'

puts "neo4j-core version: #{Neo4j::Core::VERSION}"
puts "neo4j version: #{Neo4j::VERSION}"
puts "Ruby version: #{RUBY_VERSION}"

neo4j_adaptor = Neo4j::Core::CypherSession::Adaptors::HTTP.new('http://neo4j:mypass@localhost:7474')
Neo4j::ActiveBase.on_establish_session { Neo4j::Core::CypherSession.new(neo4j_adaptor) }
Neo4j::ActiveBase.current_session = Neo4j::Core::CypherSession.new(neo4j_adaptor)

class Teacher
  include Neo4j::ActiveNode

  property :name, type: String
  has_many :in, :students, origin: :teacher
end

class Student
  include Neo4j::ActiveNode

  property :name, type: String
  has_one :out, :teacher, type: :teacher
end

teacher = Teacher.new(name: 'Dronacharya')
student = Student.new(name: 'Arjun', teacher: teacher)
teacher.students = [student]
teacher.save
teacher_reloaded_obj = Teacher.find teacher.id
puts "stundends associated with teacher: #{teacher_reloaded_obj.students.pluck(:uuid)}"

Runtime information

Output:

neo4j-core version: 9.0.0 neo4j version: 9.6.0 Ruby version: 2.5.3 stundends associated with teacher: ["7aee154e-39ec-461c-93ee-96d7bc25f0fb", "7aee154e-39ec-461c-93ee-96d7bc25f0fb"]

[OpenCoderX]

Check out the docs on creating unique associations: https://neo4jrb.readthedocs.io/en/stable/ActiveNode.html#creating-unique-relationships