Update value

This endpoint updates the value of a Feature Flag or Setting with a collection of JSON Patch operations in a specified Environment identified by the <a target="_blank" rel="noopener noreferrer" href="https://app.configcat.com/sdkkey">SDK key</a> passed in the X-CONFIGCAT-SDKKEY header.

Only the value, rolloutRules and percentageRules attributes are modifiable by this endpoint.

The advantage of using JSON Patch is that you can describe individual update operations on a resource without touching attributes that you don't want to change. It supports collection reordering, so it also can be used for reordering the targeting rules of a Feature Flag or Setting.

For example: We have the following resource.

{
  "rolloutPercentageItems": [
    {
      "percentage": 30,
      "value": true
    },
    {
      "percentage": 70,
      "value": false
    }
  ],
  "rolloutRules": [],
  "value": false
}

If we send an update request body as below:

[
  {
    "op": "replace",
    "path": "/value",
    "value": true
  }
]

Only the default served value is going to be set to true and all the Percentage Rules are remaining unchanged. So we get a response like this:

{
  "rolloutPercentageItems": [
    {
      "percentage": 30,
      "value": true
    },
    {
      "percentage": 70,
      "value": false
    }
  ],
  "rolloutRules": [],
  "value": true
}