neo4j_migrations

Migrate your Neo4j constraints

Configuring

To setup a custom config please create a neo4j-mig.config.json file.

In this file you need to specify:

• the db name (default is neo4j)
• the url to the database
• the db username
• the db password
• where to save your migrations (default is ./migrations)
• node label of already runned migration in neo4j

export interface IJSONConfig {
  database?: string;
  url: string;
  username: string;
  password: string;
  folder?: string;
  node_label?: string;
}

Creating a migration

npx neo4j_migrations create --name User Or: npx neo4j_migrations create -n User

This will create a .cql file under the folder you specified in neo4j-mig.config.json.

This file is seperated in 2 parts:

• Migrate
• Undo

Just write the cypher code you want to execute on migration under the # -- up -- And the code you will execute when reverting the migration under the # -- undo --

Don't remove those comments

Running your migrations

npx neo4j-mig run

This runs migrations that where not already executed and saves them in neo4j with the label you specified in neo4j-mig.config.json.

Undo migrations

• Undo last:

  npx neo4j-mig undo-last

• Undo all:

  npx neo4j-mig undo-all