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
1
vote
1 answer
Neo4j gem - Querying from an array object
In my previous example I had this query
current_user.friends.events(:event, :rel).where("rel.admin = {admin_p} AND event.detail = {detail_p}").params(admin_p: true, detail_p: true).pluck(:event)
current_user.friends.events brings me up to events to…
Clam
- 935
- 1
- 12
- 24
1
vote
1 answer
Neo4j gem - Updating relationship properties method
This is a fairly simple question.
Is there a specific method for updating properties for relationships in the gem? I can't seem to do a simple update_attributes or update.
My relationship is created and update is undefined for nil class.
event =…
Clam
- 935
- 1
- 12
- 24
1
vote
1 answer
Neo4j gem - Query for specific relationships
There are numerous ways to get a patterns of nodes and relationships and even look up relationships themselves based on relationship properties (e.g. EnrolledIn.where(since: 2002) but what's the best way to do obtain the relationship based on the…
Clam
- 935
- 1
- 12
- 24
1
vote
1 answer
Neo4J Gem - Saving undeclared relationships
I am trying to create a realtionship between two nodes as described here
https://github.com/neo4jrb/neo4j/wiki/Neo4j-v3-Declared-Relationships
from_node.create_rel("FRIENDS", to_node)
I am getting an undefined method for create_rel
What am I doing…
Clam
- 935
- 1
- 12
- 24
1
vote
1 answer
Associate Neo4j::ActiveNode models with ActiveRecord models
I have an application which uses Neo4j to back-end one model and PostgreSQL to back-end all the other models. Here is the Neo4j model:
class Concept
include Neo4j::ActiveNode
property :name
def references
Reference.where(concept_uuid:…
masonfmatthews
- 58
- 6
1
vote
1 answer
neo4j.rb: How can I implement text searches using neo4j.rb?
I am using neo4j.rb as the ORM for a Rails app, talking to a simple neo4j schema. I have a bunch of Person nodes and each node has two fields name and bio.
My goal is to be able to (a) search for people using a fuzzy name search which is case…
Jake
- 15,007
- 22
- 70
- 86
1
vote
1 answer
Neo4J gem datetime datatype
I'm using a combination of code from
http://railscasts.com/episodes/360-facebook-authentication?view=asciicast
oauth portion and trying to integrate it with neo4J
https://github.com/neo4jrb/neo4j
As far as I know this gem replaces many active record…
Clam
- 935
- 1
- 12
- 24
1
vote
1 answer
Relationship and setter method
I'm trying to override a setter method of one declared relationship to perform a custom behavior and some validation on the old node and the new node.
For example, take the next example:
class FantasticTeam
include Neo4j::ActiveNode
has_one…
tehAnswer
- 960
- 1
- 13
- 28
0
votes
1 answer
Neo4j Cypher query (ActiveGraph)
I have the following Cypher query which I can run in a browser console to produce the desired result:
MATCH (start:`Neo4j::Record` {record_id: 1547}), (end:`Neo4j::Record` {record_id: 1850})
MATCH…
knirirr
- 1,860
- 4
- 23
- 37
0
votes
1 answer
How can I configure Rails with Neo4j in an existing repo?
I'm currently trying to re-configure my database to use Neo4j as opposed to Postgres and I'm having issues with configuration.
I've adding the neo4j gem into my gemfile as well as neo4j-core,
neo4j-ruby-driver, and neo4j-rake_tasks.
I've tried…
0
votes
1 answer
How do we pass the arguments for the relationship properties in neo4j.rb?
Neo4j.rb project. From the docs.
student = Student.first
lesson = Lesson.new
student.lessons << lesson
How do we pass the arguments for the relationship properties for the relationship between student and lesson?
Sanjay Singh
- 367
- 1
- 11
0
votes
1 answer
Having trouble setting up neo4j.rb for rails
I am trying to use neo4j.rb on rails.
Following https://neo4jrb.readthedocs.io/en/v9.4.0/Setup.html this site, I tried
rails new myapp -m http://neo4jrb.io/neo4j/neo4j.rb -O
this shows an error that says
`open_http': 404 Not Found…
taiyaki29
- 11
0
votes
1 answer
How to dump data with Neo4j.rb
I'm working on Rails project with Neo4j.rb and I have a very basic problem: I'd like to dump my data to file (and next load it back). Unfortunately I can't do this. I tried this command:
neo4j-admin dump --database=…
Karol Selak
- 4,248
- 6
- 35
- 65
0
votes
0 answers
Shortests weighted path with Neo4j.rb and Ruby On Rails
I am trying to calculate the shortest weighted path between two nodes.
Here's my User class:
class User
include Neo4j::ActiveNode
property :name, type: String
has_many :both, :friends, rel_class: :Friendship, model_class: :User
end
Users are…
Ibrah
- 83
- 9
0
votes
2 answers
Option 'rel_length ' in Neo4j.rb doesn't work properly
It's issue similar to this question , but in my case 'neo4j-core' gem version is updated from 7.0.4 to 8.1.0, and 'neo4j' 8.0.7 -> 8.3.4
class Person
include Neo4j::ActiveNode
has_one :out, :ancestor, rel_class: :HasFather
end
class HasFather
…
balyam
- 1
- 2