Default is set to {} for UUID default value

[vhonchar]

Steps

• create a model like

const Model = sequelize.define('model', {
    someField: {
        type: DataTypes.UUID,
        defaultValue: DataTypes.UUIDV4,
    },
});

• generate OpenApi3Strategy schema for this model

const schemaManager = new JsonSchemaManager();
const schema = schemaManager.generate(Model, new OpenApi3Strategy(), {
    associations: false,
});

Actual model definition

{
  "title": "model",
  "type": "object",
  "properties": {
    "fileName": {
      "type": "string",
      "format": "uuid",
      "default": {
       }
    },
}

The issue is in the default value. UUID is a simple string with UUID format for swagger, and setting default to {} is creating confusion from user's perspective and messes with tools which are using swagger schema (e.g validation based on the schema).

Proposed model definition
Since UUID as default is a function, rather than a static value, a proposal is to omit default value at all

{
  "title": "model",
  "type": "object",
  "properties": {
    "fileName": {
      "type": "string",
      "format": "uuid",
    },
}

Workaround
Currently, I'm using jsonSchema on a field to create own definition for a field without default parameter

const Model = sequelize.define('model', {
    someField: {
        type: DataTypes.UUID,
        defaultValue: DataTypes.UUIDV4,
        jsonSchema: {
            schema: {
                type: 'string',
                format: 'uuid',
                default: undefined,
            },
        },
    },
});