A Content deals with one or several Knowledge Nodes. For instance, the question “2 x 3 = ?” only deals with the Knowledge Node “multiplication”, while a book on Geography will deals with many Knowledge Nodes. The Knowledge Node Contents represent that relation.\\

===Object resources===

^ Property     ^ Type      ^ Description         ^
| id | Integer | identifier for the database of Domoscio's API |
| knowlede_node_id    | Integer | One of the knowledge nodes the content is related to |
| content_id | Integer | The related content |
| importance_degree | Integer | If a content is related to several knowledge nodes, that parameter indicates the relative importance of each; 1 indicates the most important knowledge node. |
| created_at | DateTime | Date of creation of the object |
| updated_at | DateTime | Last time the object has been modified |

===Create (POST)===

^ Method | POST |
^ URL | /knowledge_node_contents |

==Parameters (*Requiered parameters)==

^ Property     ^ Type      ^ Description         ^
| knowlede_node_id (or knowledge_node_uid)* | Integer | One of the knowledge nodes the content is related to |
| content_id (or content_uid)* | Integer | The related content |
| importance_degree | Integer | If a content is related to several knowledge nodes, that parameter indicates the relative importance of each; 1 indicates the most important knowledge node. |

==Send the request (JSON input example)==

<code>
{
	knowledge_node_id: 3170,
	content: 2749,
	importance_degree: 1
}
</code>

==Get the response (JSON output example)==

<code>
{
    "id": 1719,
    "knowledge_node_id": 3170,
    "content_id": 2749,
    "created_at": "2017-11-22T17:02:39.343Z",
    "updated_at": "2017-11-22T17:02:39.343Z",
    "importance_degree": 1
}
</code>

===Fetch (GET)===

^ Method | GET|
^ URL | /knowledge_node_contents/{knowledge_node_content_id} |

If no knowledge_node_content_id is provided it will fetch all the Knowledge Node Content for your instance. You can choose to filter your request thanks to the following parameters:\\
^ Property     ^ Type      ^ Description         ^
| knowlede_node_id | Integer | One of the knowledge nodes the content is related to |
| content_id | Integer | The related content |

==Get the response (JSON output example)==

**With ID provided**\\

<code>
{
    "id": 1719,
    "knowledge_node_id": 3170,
    "content_id": 2749,
    "created_at": "2017-11-22T17:02:39.343Z",
    "updated_at": "2017-11-22T17:02:39.343Z",
    "importance_degree": 1
}
</code>


**Without ID provided**\\
<code>
[
    {
        "id": 1719,
        "knowledge_node_id": 3170,
        "content_id": 2749,
        "created_at": "2017-11-22T17:02:39.343Z",
        "updated_at": "2017-11-22T17:02:39.343Z",
        "importance_degree": 1,
        "instance_id": 45
    }
]
</code>