Add Edges collection to a graph - php

Question

Using Arangodb 3.2, have a set of collections (arangoimp + CSV):
user (documents)
profile (documents)
user_profile (edges)
I'd like create a graph from listed above. Was unable to find in the documentation about composing graph from already existent collections of vertices and edges, or didn't get how to.
In [1] there is an example how to add relation (e.g. create edges collection, linking vertices), but what if I already have one?
It would be nice to understand how to compose a graph from existent collections via (AND/OR):
PHP (triagens/arangodb)
HTTP API
Bash
Links:
https://docs.arangodb.com/3.2/Manual/Graphs/GeneralGraphs/

Answer 1

Have you tried to create the graph via the web interface (https://docs.arangodb.com/devel/Manual/Administration/WebInterface/Graphs.html)?
If you want to create the graph just once this is an easy solution.

Answer 2

Finally I found a PHP solution myself:
$edgeDefinition = new \triagens\ArangoDb\EdgeDefinition(
'user_profile',
'user',
'profile'
);
$graphName = 'testGraph';
$graph = new \triagens\ArangoDb\Graph($graphName);
$graph->addEdgeDefinition($edgeDefinition);
$graphHandler = new \triagens\ArangoDb\GraphHandler($connection);
if (!$graphHandler->getGraph($graphName)) {
$graphHandler->createGraph($graph);
}
I'd propose update official docs (see [1]) with more explicit explanation of graph_module._relation parameters.
It's a pity, but there is no ArangoDb HTTP API solution yet.