rxdi/starter-neo4j-javascript

Example starter project with autogenerated CRUD operations based on NEO4J Graph database

@Starter Neo4J Graph Javascript

To start developing clone repository

git clone https://github.com/rxdi/starter-neo4js-javascript

Open cloned repository and install packages

cd starter-neo4js-javascript && npm i

Download Neo4J database https://neo4j.com/download/

Follow the steps and create your Graph using interface provided and set password to it

default username for neo4j is neo4j

You only need to setup password field

Open index.js and fill configuration

const { CoreModule, setup } = require("@gapi/core");
const { VoyagerModule } = require("@gapi/voyager");
const { Neo4JModule } = require("@rxdi/neo4j");
const { makeAugmentedSchema } = require("neo4j-graphql-js");

const typeDefs = `
type Movie {
  title: String
  year: Int
  imdbRating: Float
  genres: [Genre] @relation(name: "IN_GENRE", direction: "OUT")
}
type Genre {
  name: String
  movies: [Movie] @relation(name: "IN_GENRE", direction: "IN")
}
`;

setup({
  imports: [
    CoreModule.forRoot({ graphql: { initQuery: false } }),
    Neo4JModule.forRoot({
      schemaOverride: () => makeAugmentedSchema({ typeDefs }),
      password: "your-password",
      username: "neo4j",
      address: "bolt://localhost:7687"
    }),
    VoyagerModule.forRoot()
  ]
}).subscribe();

Start the application

Wait for about 5 seconds and browser will be started leading you to Graphiql panel

node index.js

Open voyager panel

http://0.0.0.0:9000/voyager

Open graphiql DevTools

http://0.0.0.0:9000/devtools

Example

1. Create Movie

mutation {
  CreateMovie(title: "Titanic", year: 1990, imdbRating: 1) {
    title
    year
    genres {
      name
    }
  }
}

2. Create Genre

mutation {
  CreateGenre(name: "Drama") {
    name
    movies {
      title
      year
      imdbRating
    }
  }
}

3. Create Relationship between Genre Drama and Movie Titanic

mutation {
  AddGenreMovies(from: { title: "Titanic" }, to: { name: "Drama" }) {
    from {
      title
    }
    to {
      name
    }
  }
}

4. List Genres

query {
  Genre {
    name
    movies {
      title
    }
  }
}

5. List Movies

query {
  Movie {
    title
    year
    genres {
      name
    }
  }
}

Notice that both objects are linked