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Yii 2 Neo4j Extension Template

This project is a template with some examples, how to use the boehsermoe/yii2-neo4j extension. The extension make it easily to use Yii2 models with Neo4j database. The project structure based on the Yii 2 Basic Template.

Please note that this extension is currently just a experimental project.

INSTALLATION

Clone from github

git clone [email protected]:boehsermoe/neo.git && cd neo && composer install

Maybe you need to adjust your directory permissions.

chmod -R 777 runtime/
chmod -R 777 web/

Now you should be able to access the application through the following URL, assuming neo is the directory directly under the Web root.

http://localhost/basic/web/

CONFIGURATION

Now you have to configure your database connection.

NOTE: The extension won't create the database for you, this has to be done manually before you can access it. See here for more information http://neo4j.com/developer/get-started/

index.php

You have to disable E_STRICT error reporting in the index.php:

error_reporting(E_ALL ^ E_STRICT);

Database

Required following class in the file config/db.php:

return [
    'class' => '\neo4j\db\Connection',
];

You can edit it with real data, for example:

return [
    'class' => '\neo4j\db\Connection',
    'host' => 'localhost', // Default
    'port' => 7474, // Default
    'username' => 'neo4j', // Default
    'password' => 'neo', // Default
];

Is your Neo4j Server running and available?

http://localhost:7474

Guide

Models

The models/User.php and models/UserDetail.php are the schema for the database nodes. A database node is mirrored by a Model. The class name is the node label. Each class property in the model is a node property in the database.

In the model will be declared, how it is related to other models. A relationship consist of a the other model class, a label of the relationship and the direction.

public function getDetails()
{
	return $this->hasMany(UserDetail::className(), ['HAS'], ActiveQuery::DIRECTION_OUT);
}

With implementations the extension can link one model to another.

More coming soon...

Console Examples

The examples are located in commands/CypherController.php, there you can experiment with the Neo4j-ActiveRecord.

  1. Step: Create a User ./yii cypher/create Neo 30
  2. Step: Find the created User ./yii cypher/find Neo
  3. Step: Delete the created User ./yii cypher/delete-user Neo

For more information:

./yii help cypher

More coming soon...