neo4j.rb

问题 bundle exec rake runs all tests perfectly fine locally . However, Travis CI keeps blowing up with Problem accessing /authentication without giving much more info to go on. Here's one of the failed builds: https://travis-ci.org/Nase00/Horizon/builds/48094102 For the life of me, I cannot figure out what is causing an authentication error when Travis tries to run bundle exec rake . Here's the project repo: https://github.com/Nase00/Horizon 回答1: I'm not sure what version of Neo4j Travis uses (

问题 undefined method 'find_by' for nil:NilClass Extracted source (around line #38): def update respond_to do |format| if @tag.update(tag_params) format.html { redirect_to @tag, notice: 'Tag was successfully updated.' } format.json { render :show, status: :ok, location: @tag } else format.html { render :edit } format.json { render json: @artefact.errors, status: :unprocessable_entity } end end end I am working on modifying the scaffold generators to automatically process :relations as has_many ,

问题 This is mostly a design/efficiency question but I wanted to see if there was a preferred way to handle this in neo4j as opposed to how I would do it in a sql db. Right now I have 2 models - user and event . I also have a relationship between user and event to represent that they will attend the event. I want to figure out the best way to represent the admin of the event. In other words, I want to be able to query the events that are admined by a user. One way to do it is to create a new

问题 class Client include Neo4j::ActiveNode end > client = Client.new => #<Client uuid: nil, bot_client_id: nil, created_at: nil, email: nil, first_name: nil, last_name: nil, sms: nil, telegram_id: nil, updated_at: nil> My expectation is that the uuid would be populated. 回答1: The uuid is only populated once the node object has been saved. So you could either do: client = Client.create Or: client = Client.new client.save 来源： https://stackoverflow.com/questions/43535208/neo4j-uuid-is-not-created

问题 I need to get "friends of friends" of User . So, friend(rel_length: 2) doesn't work (ignores method), returning friends. class User include Neo4j::ActiveNode ... has_many :out, :friend, rel_class: Friend ... end class Friend include Neo4j::ActiveRel from_class User to_class User type 'friend' property :activity, type: String property :relation, type: String property :token, type: String end 回答1: For anybody finding this later the reason was because he was using an older version of the gem

问题 I'm using neo4j in my current app and it is my first time with this database, then I have a lot of doubts. The most important now is the following. I'm customizing my input forms (as you may see in this question I asked) and here is one of my models: class Contact include Neo4j::ActiveNode property :first_name, type: String property :surname, type: String property :email, type: String property :phones, type: String has_one :in, :address, type: :HAS_ADDRESS has_one :in, :title, type: :HAS

问题 I'm currently working through this tutorial and I'm stuck when it comes to creating relationships in the rails console. I've read through the Neo4jrb project documentation and a blog post on jayway.com but still can't figure it out. I've created a rails site and I want to create team nodes, league nodes, and relationships between them in a Neo4j database using my rails scripts. I have two models: One for League class Team include Neo4j::ActiveNode property :name, type: String has_one :out,

问题 This may not be possible as it is right now but I have a query like so events = Event.as(:e).where("(( e.date_start - {current_time} )/{one_day_p}) < 1 ").users(:u, :rel).where("rel.reminded = {reminded_p}" ).params(reminded_p: false, one_day_p: one_day, current_time: time).pluck(:e,:u, :rel) The goal is to obtain the events where the start_date is less than a day away. Hypothetically I've tried to pluck the event, the user and the relationship. I need to do a different action with each. I

问题 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 continue my chain, but does this work for if I already have an object that contains an array of events? In my example, I am trying to use geocoder to pull in proximity. So I have my user and events which are geocoded. Geocoder can do something like

问题 I have created 5 models in my project using ActiveNode model and using neo4j gem. There is a model named Disease, defined as: class Disease include Neo4j::ActiveNode property :disease, type: String, constraint: :unique property :created_at, type: DateTime property :updated_at, type: DateTime enum factor_effect: [:relief, :worsen] # Associations has_many :in, :factors, type: :AFFECTED_BY end and Factor: class Factor include Neo4j::ActiveNode property :factor, type: String, constraint: :unique