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The content’s structure is symbolized by knowledge edges. Knowledge edges are the last objects to instantiate while setting up your content on our API. It gives you a simple way to build your learning path.

Object resources

Property	Type	Description
knowledge_graph_id	Integer	The knowledge graph the knowledge edge belongs to
source_node_id	Integer	The source node of the knowledge edge
destination_node_id	Integer	The destination node of the knowledge edge
instance_id	Integer	The instance the knowledge edge belongs to
direct	Boolean	A direct prerequisite link. If false, abstract link between source and destination nodes
hops	Integer	Number of links between source and destination nodes
distance	Integer	Number of nodes between source and destination nodes
created_at	Timestamp	The creation date of the object
updated_at	Timestamp	The last update date of the object

Create (POST)

Method	POST
URL	/knowledge_edges

Parameters (*Requiered parameters)

Property	Type	Description
knowledge_graph_id*	Integer	The knowledge graph the knowledge edge belongs to
source_node_id*	Integer	The source node of the knowledge edge
destination_node_id*	Integer	The destination node of the knowledge edge

Send the request (JSON input example)

{
	knowledge_graph_id: 1,
	source_node_id: 1,
	destination_node_id: 2
}

Get the response (JSON output example)

{
	id: 1,
	knowledge_graph_id: 1,
	source_node_id: 1,
	destination_node_id: 2,
	instance_id : 1,
	created_at : 2014-09-17 09:21:03,
	updated_at : 2014-09-17 09:21:03
}

Fetch (GET)

Method	GET
URL	/knowledge_edges/{knowledge_edge_id}

If no knowledge_edge_id is provided it will fetch all the Knowledge Edges for your instance.

Get the response (JSON output example)

With ID provided

{
	id: 1,
	knowledge_graph_id: 1,
	source_node_id: 1,
	destination_node_id: 2,
	instance_id : 1,
	direct: true,
	hops: 1,
	distance: 1,
	created_at : 2014-09-17 09:21:03,
	updated_at : 2014-09-17 09:21:03
}

Without ID provided

[
	{
		id: 1,
		knowledge_graph_id: 1,
		source_node_id: 1,
		destination_node_id: 2
	},
	{
		id: 2,
		knowledge_graph_id: 1,
		source_node_id: 1,
		destination_node_id: 3
	}
]

Fetch Knowledge Edges by Knowledge Node (GET)

You can get all related Knowledge Edges for a given Source Knowledge Node

Method	GET
URL	/knowledge_nodes/{knowledge_node_id}/knowledge_edges

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Object resources

Create (POST)

Parameters (*Requiered parameters)

Send the request (JSON input example)

Get the response (JSON output example)

Fetch (GET)

Get the response (JSON output example)

Fetch Knowledge Edges by Knowledge Node (GET)

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