How can you update Weaviate class properties without data loss?

Support
1

I’m using a weaviate 1.9.6 and have a class with the following properties:

{
  "classes": [
    {
      "class": "Users",
      "description": "Represents a user",
      "vectorizer": "text2vec-contextionary",
      "moduleConfig": {
        "text2vec-contextionary": {
          "skip": false,
          "vectorizeClassName": "false",
          "options": {
            "waitForModel": true,
            "useGPU": false,
            "useCache": true
          }
        }
      },
      "properties": [
        {
          "name": "Name",
          "dataType": [
            "string"
          ],
          "indexFilterable": true,
          "indexSearchable": true,
          "moduleConfig": {
            "text2vec-contextionary": {
              "skip": false,
              "vectorizePropertyName": false
            }
          },
          "description": "The Name of the user"
        },
        {
          "name": "Age",
          "dataType": [
            "int"
          ],
          "indexFilterable": true,
          "indexSearchable": false,
          "description": "The Age of the user"
        },
        {
          "name": "Title",
          "dataType": [
            "string"
          ],
          "indexFilterable": true,
          "indexSearchable": true,
          "description": "The Title of the user",
          "moduleConfig": {
            "text2vec-contextionary": {
              "skip": false,
              "vectorizePropertyName": false
            }
          }
        }
      ]
    }
  ]
}

I have inserted data to the class. How can I update the class by adding a new property without loosing the data that is there already. If it’s possible to do so via the python weaviate client it would be very helpful. Thanks in advance.

2

You can add a property to an already existing class.

Check out the docs, there is an example.