@gluonjs/core / packages/json-forms/src / JsonFormChangeDetail

Interface: JsonFormChangeDetail

Detail emitted when a person changes a field.

Properties

data

readonly data: JsonObject

---

errors

readonly errors: readonly JsonFormValidationError[]

Example

Receive frozen changed JSON data and the validation diagnostics that describe that exact edit:

import {
  createJsonFormsMessageProvider,
  createJsonFormsRendererRegistry,
  isJsonFormsRendererRegistry,
  JsonForm,
  JsonSchemaResolutionError,
  jsonFormsTag,
  registerJsonForms,
  resolveJsonSchema,
  type JsonFormChangeDetail,
  type JsonFormField,
  type JsonFormOptions,
  type JsonFormsElement,
  type JsonFormsMessageOverrides,
  type JsonFormsMessageProvider,
  type JsonFormsMessageProviderOptions,
  type JsonFormsRendererContext,
  type JsonFormsRendererControl,
  type JsonFormsRendererKind,
  type JsonFormsRendererRegistration,
  type JsonFormsRendererSelector,
  type JsonFormsUiSchema,
  type JsonFormValidationChangeDetail,
  type JsonFormValidationError,
  type JsonObject,
  type JsonSchema,
  type JsonSchemaResolutionOptions,
  type JsonValue,
} from '@gluonjs/json-forms';

const schema = { type: 'object', properties: { email: { $ref: '#/$defs/email' }, delivery: { type: 'string', enum: ['morning', 'afternoon'] } }, required: ['email'], $defs: { email: { type: 'string', format: 'email' } } } satisfies JsonSchema;
const referenceOptions = { maxDepth: 8, maxNodes: 64 } satisfies JsonSchemaResolutionOptions;
const resolvedSchema = resolveJsonSchema(schema, referenceOptions);
const referenceError = new JsonSchemaResolutionError('ref-pointer', 'Invalid reference.');
const uischema = { type: 'VerticalLayout', elements: [{ type: 'Control', scope: '#/properties/email', label: 'Email address' }, { type: 'Control', scope: '#/properties/delivery' }] } satisfies JsonFormsUiSchema;
const data = { email: 'hello@example.test', delivery: 'morning' } satisfies JsonObject;
const value: JsonValue = data.delivery;
const errors: readonly JsonFormValidationError[] = [];
const change: JsonFormChangeDetail = { data, errors };
const validation: JsonFormValidationChangeDetail = { valid: true, errors };
const messageOverrides = { selectPlaceholder: (required: boolean) => required ? 'Choose one' : 'No selection' } satisfies JsonFormsMessageOverrides;
const messageOptions = { locale: 'en-GB', messages: messageOverrides } satisfies JsonFormsMessageProviderOptions;
const messages: JsonFormsMessageProvider = createJsonFormsMessageProvider(messageOptions);
const rendererKind: JsonFormsRendererKind = 'select';
const rendererSelector = { kind: rendererKind, path: ['delivery'] } satisfies JsonFormsRendererSelector;
const rendererRegistration = { id: 'delivery-summary', selector: rendererSelector, priority: 10, render: (context: JsonFormsRendererContext) => String(context.value ?? '') } satisfies JsonFormsRendererRegistration;
const rendererRegistry = createJsonFormsRendererRegistry([rendererRegistration]);

registerJsonForms();
const element = document.createElement(jsonFormsTag) as JsonFormsElement;
element.schema = schema;
element.uischema = uischema;
element.data = data;
element.messages = messages;
element.rendererRegistry = rendererRegistry;
const rendererControl: JsonFormsRendererControl | undefined = undefined;
const field: JsonFormField | undefined = undefined;
const options = { schema, uischema, data, messages, rendererRegistry, onChange: (event) => console.log(event.detail.data), onValidationChange: (event) => console.log(event.detail.valid) } satisfies JsonFormOptions;
const view = JsonForm(options);
console.log(element.value, value, change, validation, isJsonFormsRendererRegistry(rendererRegistry), rendererControl, field, view, resolvedSchema, referenceError.keyword);