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[4.1] [API] index_template impossible to create node ONLY from the API

Dear all, The title is not misleading.

Description

  • In order to create a node, its parent must be passed.
  • When a new index is created, its root node is created as well. db_root_node
  • There is no API endpoint which provides the ID of the Root node.
  • It is not possible to create nodes only from the API.

Steps to reproduce

  • Run a Mayan EDMS 4.1 instance
  • Navigate to the index_templates endpoint : /api/v4/index_templates/
  • Use the form to create an index_template
  • Notice that there is no mention of the Root nodeID in the index_template
  • Opening the detail view of the index_instance for this index_template also doesn't provide with Root nodeID
  • Follow the link to its nodes: "nodes_url": "..../api/v4/index_templates/23/nodes/"
  • Notice that the list is empty nodes
  • Use the JSON form to create a node (the HTML form provides a list of nodes including roots, built internally) payload
  • Receive an error for the empty parent response

Expected Behavior (one of many)

In order to enable creation of nodes solely through the API, one must be able to find the ID of the `Root node`.
  • Display the Root node ID in the APIIndexTemplateListView
  • Display the Root node ID in the APIIndexTemplateDetailView
  • Add an API view to get the Root node
Edited by Ludovic Anterieur