Code Quality Rank: L4
Monthly Downloads: 1,472
Programming language: Ruby
License: MIT License
Tags: Database Drivers    
Latest version: v1.8.0

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Welcome to Neography

Neography is a thin Ruby wrapper to the Neo4j Rest API, for more information:

If you want to utilize the full power of Neo4j, you will want to use JRuby and the excellent Neo4j.rb gem at https://github.com/andreasronge/neo4j by Andreas Ronge



Add neography to your Gemfile:

gem 'neography'

And run Bundler:

$ bundle


Or install neography manually:

$ gem install 'neography'

And require the gem in your Ruby code:

require 'rubygems'
require 'neography'

Read the wiki for information about dependencies.

Rake tasks are available for downloading, installing and running Neo4j.


Configuration and initialization

Configure Neography as follows:

# these are the default values:
Neography.configure do |config|
  config.protocol             = "http"
  config.server               = "localhost"
  config.port                 = 7474
  config.directory            = ""  # prefix this path with '/'
  config.cypher_path          = "/cypher"
  config.gremlin_path         = "/ext/GremlinPlugin/graphdb/execute_script"
  config.log_file             = "neography.log"
  config.log_enabled          = false
  config.slow_log_threshold   = 0    # time in ms for query logging
  config.max_threads          = 20
  config.authentication       = nil  # 'basic' or 'digest'
  config.username             = nil
  config.password             = nil
  config.parser               = MultiJsonParser
  config.http_send_timeout    = 1200
  config.http_receive_timeout = 1200
  config.persistent           = true

Then initialize a Rest instance:

@neo = Neography::Rest.new
@neo = Neography::Rest.new({:authentication => 'basic', :username => "neo4j", :password => "swordfish"})
@neo = Neography::Rest.new("http://neo4j:swordfish@localhost:7474")

For overriding these default and other initialization methods, see the configuration and initialization page in the Wiki.


Neography supports the creation and retrieval of nodes and relationships through the Neo4j REST interface. It supports indexes, Gremlin scripts, Cypher queries and batch operations.

Some of this functionality is shown here, but all of it is explained in the following Wiki pages:

2.0 Only features:

1.8+ features:

Some example usage:

# Node creation:
node1 = @neo.create_node("age" => 31, "name" => "Max")
node2 = @neo.create_node("age" => 33, "name" => "Roel")

# Node properties:
@neo.set_node_properties(node1, {"weight" => 200})

# Relationships between nodes:
@neo.create_relationship("coding_buddies", node1, node2)

# Get node relationships:
@neo.get_node_relationships(node2, "in", "coding_buddies")

# Use indexes:
@neo.add_node_to_index("people", "name", "max", node1)
@neo.get_node_index("people", "name", "max")

# Batches:
@neo.batch [:create_node, {"name" => "Max"}],
           [:create_node, {"name" => "Marc"}]

# Cypher queries:
@neo.execute_query("start n=node(0) return n")

You can also use the cypher gem instead of writing cypher as text.

node(1).outgoing(rel(:friends).where{|r| r[:since] == 1994})

would become:

START me=node(1) 
MATCH (me)-[friend_rel:`friends`]->(friends) 
WHERE (friend_rel.since = 1994) 
RETURN friends

This is just a small sample of the full API, see the Wiki documentation for the full API.

Neography raises REST API errors as Ruby errors, see the wiki page about errors. (Note: older versions of Neography did not raise any errors!)

Phase 2

Trying to mimic the Neo4j.rb API.

Now we are returning full objects. The properties of the node or relationship can be accessed directly (node.name). The Neo4j ID is available by using node.neo_id.

Some of this functionality is shown here, but all of it is explained in the following Wiki pages:

# create two nodes:
n1 = Neography::Node.create("age" => 31, "name" => "Max")
n2 = Neography::Node.create("age" => 33, "name" => "Roel")

n1.exist? # => true

# get and change some properties:
n1[:age]         # => 31
n1.name          # => "Max"
n1[:age]  = 32   # change property
n1.weight = 190  # new property
n1.age    = nil  # remove property

# add a relationship between nodes:
new_rel = Neography::Relationship.create(:coding_buddies, n1, n2)

# remove a relationship:

# add a relationship on nodes:
n1.outgoing(:coding_buddies) << n2

# more advanced relationship traversal:
n1.outgoing(:friends)                                                # Get nodes related by outgoing friends relationship
n1.outgoing(:friends).depth(2).include_start_node                    # Get n1 and nodes related by friends and friends of friends

n1.rel?(:outgoing, :friends)                                         # Has outgoing friends relationship
n1.rels(:friends,:work).outgoing                                     # Get outgoing friends and work relationships

n1.all_paths_to(n2).incoming(:friends).depth(4)                      # Gets all paths of a specified type
n1.shortest_path_to(n2).incoming(:friends).depth(4).nodes            # Gets just nodes in path

This is just a small sample of the full API, see the Wiki documentation for the full API.



Some example code.


Some tips about testing.

Related Neo4j projects

Complement to Neography are the:

An alternative to Neography is Architect4r by Maximilian Schulz

Neography in the Wild

Getting started with Neography


Please create a new issue if you run into any bugs.

Contribute patches via pull requests.


If you are just starting out, or need help send me an e-mail at [email protected].

Check you my blog at http://maxdemarzi.com where I have more Neography examples.


*Note that all licence references and agreements mentioned in the Neography README section above are relevant to that project's source code only.