Nested object's additionalProperties default values not used

[jfblain]

Prerequisites

• I have read the documentation;
• In the case of a bug report, I understand that providing a SSCCE example is tremendously useful to the maintainers.
• Ideally, I'm providing a sample JSFiddle or a shared playground link demonstrating the issue.

Description

If an object within the "global" form object contains additionalProperties with defaults on some of their fields, they won't be used or showed in the form. Bellow is an example of such a schema in which the defaults that do not appear are mentioned (x2-additionalProperties and x5).

{
  "title": "Missing default showcase",
  "type": "object",
  "properties": {
    "x1": {
      "type": "string",
      "default": "x1 default"
    },
    "x2": {
      "type":"object",
      "properties": {
        "x3": {
          "type": "string",
          "default": "x3 default"
        }
      },
      "additionalProperties": {
        "type": "string",
        "default": "x2-additional default (not showing)"
      }
    }
  },
  "additionalProperties": {
    "type": "object",
    "properties": {
      "x4": {
        "type": "string",
        "default": "x4 default"
      }
    },
    "additionalProperties": {
      "type": "object",
      "properties": {
        "x5": {
          "type": "string",
          "default": "x5 default (not showing)"
        },
        "x6": {
          "type": "array",
          "items": {
            "type": "string",
            "default": "x6 default"
          }
        }
      }
    }
  }
}

Also included in this example schema is that arrays within those "problematic" objects will still use the default values as expected.

Expected behavior

Defaults should always be used as mentioned in the first paragraph of this part of the documentation.

Actual behavior

Defaults are not always present in nested objects' additionalProperties.

Version

3.2.0

[kovayur]

Hi,

Looks like we are also affected by the same issue. Here's the schema example:

{
  "type": "object",
  "default": {
    "resources": {
      "limits": {
        "cpu": "500m",
        "memory": "1Gi"
      },
      "requests": {
        "cpu": "100m",
        "memory": "256Mi"
      }
    }
  },
  "properties": {
    "resources": {
      "type": "object",
      "properties": {
        "limits": {
          "type": "object",
          "additionalProperties": {
            "type": "string"
          }
        },
        "requests": {
          "type": "object",
          "additionalProperties": {
            "type": "string"
          }
        }
      }
    }
  }
}

Expected: Limits and requests are filled with defaults;
Actual: Limits and requests are empty.

Playground link.

[ezzadeen]

I still see this problem. Using the Playground:

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "test": {
      "title": "Test",
      "type": "object",
      "additionalProperties": {
        "type": "object",
        "properties": {
          "host": {
            "title": "Host",
            "type": "string",
            "default": "localhost"
          },
          "port": {
            "title": "Port",
            "type": "integer",
            "default": 389
          }
        }
      }
    }
  }
}

[heath-freenome]

Playground link for the above schema example