Neo4j.rb is an Active Model compliant Ruby/JRuby wrapper for the Neo4j graph database. It uses the neo4j-core and active_attr gems.
Neo4j.rb is an Active Model compliant Ruby/JRuby wrapper for the Neo4j graph database.
Questions tagged [neo4j.rb]
175 questions
3
votes
2 answers
Export Neo4j.rb Nodes with Associations as JSON
I have an app that is using the Neo4j.rb gem in a Rails app on a smallish database with only a few thousand nodes/relationships and I'm now writing a batch upload and download script. Mostly for backup/migration purposes. I have 2 nodes for now-…
Ryan Snodgrass
- 169
- 5
3
votes
1 answer
How to define these owner/member relationships in Neo4j.rb?
I'm trying to figure out how to define these owner/member relationships in my Neo4j.rb Active::Node models.
Users can create many teams (and become the "owner" of those teams)
Users can fetch the teams that they have created
Teams have a single…
Andrew
- 227,796
- 193
- 515
- 708
3
votes
1 answer
Using has_many "both" in neo4j.rb
I'm looking for a way to set up a relationship between Users where you can use in, out, and both all at the same time in Neo4j.rb.
Here's what I have so far:
class User
include Neo4j::ActiveNode
has_many :both, :friends, type: :connection,…
bswinnerton
- 4,533
- 8
- 41
- 56
3
votes
1 answer
Neo4j Cypher : transfer all relationships before replacing a node by another
I'm trying to transfert all ingoing and outgoing relationships from a node to another, before deleting the first one. they both have the same label.
I saw this Neo4j Cypher: copy relationships and delete node
but in my case i don't know the type of…
armedwing
- 113
- 1
- 10
3
votes
0 answers
Using Foreman with Sidekiq, Neo4j and Ruby on Rails
In a Rails project I'm currently using neo4j instead of ActiveRecord. I added the Sidekiq and Foreman to be able to start Sidekiq and Rails server at the same time. This is what I have in the Procfile:
worker: bundle exec sidekiq
web: rails…
mpartan
- 1,296
- 1
- 14
- 30
2
votes
1 answer
How to override ruby neo4j node primary id
I have the following model:
class User
include Neo4j::ActiveNode
end
and I simply want to specify the primary key at creation time:
user = User.create(id: SecureRandom.uuid)
However, this does not work and return Undefined properties: id.
I have…
Pierre-Louis Gottfrois
- 17,561
- 8
- 47
- 71
2
votes
1 answer
Neo4j.rb: how to search from serialize property having array
class Picture
property :name
property :user_ids
serialize :user_ids
end
Picture.create(name: '1', user_ids: [1,4,5])
How to find all pictures having user id 1 in user_ids property
I am trying this in way:
Picture.as(:p).where('ALL(x IN [1]…
Vishal G
- 1,521
- 11
- 30
2
votes
1 answer
errors using neo4j gem for non-rails (ruby-only)
From the documentation: http://neo4jrb.readthedocs.io/en/8.0.x/Setup.html
neo4j_adaptor = Neo4j::Core::CypherSession::Adaptors::HTTP.new('http://user:pass@host:7474')
Neo4j::ActiveBase.on_establish_session {…
Satchel
- 16,414
- 23
- 106
- 192
2
votes
2 answers
Neo4j.rb (8.0.11) + Resque : Input/output error @ io_write -
I have recently upgraded neo4j and I am getting issue in resque workers,
Exception
Errno::EIO
Error
Input/output error @ io_write -
I am getting this issue and backtrace says its related to neo4j.rb puts
Errno::EIO: Input/output error -…
Vishal G
- 1,521
- 11
- 30
2
votes
1 answer
Neo4j.rb : as_json how to ignore root?
For Active record its working fine
ActiveRecord::Base.include_root_in_json = false
User.first.as_json
=> { "id" => 1, "name" => "Konata Izumi", "age" => 16,
"created_at" => "2006/08/01", "awesome" => true}
When I use it for Neo4j.rb active…
Vishal G
- 1,521
- 11
- 30
2
votes
1 answer
Rails Neo4j.rb Serializers?
In Active node how we can implement JSON serializers like active modal
http://api.rubyonrails.org/classes/ActiveModel/Serializers/JSON.html
Or any other way to send customized API response?
Right now I am doing it by making custom method in…
Vishal G
- 1,521
- 11
- 30
2
votes
1 answer
How to set "resultDataContents" in Neo4jrb?
I want to visualise data from Neo4j with the frontend-library D3.js in an Rails application, using Neo4jrb. For example I could use the following query to get my graph data.
query = "MATCH path = (a)-[b]->(c) RETURN path"
result =…
LimonChillo
- 53
- 4
2
votes
0 answers
rake neo4j:install giving ArgumentError
I am working on a Windows 8 PC and am new to web development.
I am following this tutorial to build a neo4j rails application. When I type the following into Powershell:
rake neo4j:install[community-latest]
I get the following error
DL is…
Nimayi Dixit
- 41
- 2
2
votes
2 answers
Reconnect Neo4jrb connections after puma fork with preload_app?
Heroku suggests using it, but these problems I see all in my local dev environment
I am using MRI 2.2.3 and neo4j.rb 6.0.0 (ActiveNode models) with the HTTP adapter
I am also on OSX 10.11.2 with Neo4j 2.2.5 and jdk1.7.0_51-b53
I've tried lots of…
brucek
- 726
- 6
- 9
2
votes
2 answers
Counting the results of a cypher query by range
I would like to count the results of my cypher query by range.
Here's an example : let's say I've a list of books with the year of publication, I'd like to be able to count the number of books matching my cypher query published between 1970 and…
armedwing
- 113
- 1
- 10