An element to edit form data (x-www-form-urlencoded)

Usage no npm install needed!

<script type="module">
  import advancedRestClientFormDataEditor from 'https://cdn.skypack.dev/@advanced-rest-client/form-data-editor';


Published on NPM

Tests and publishing


An element to edit form data (x-www-form-urlencoded).

The element renders a form that allows to enter form data values.

It may be used with AMF json/ld model via api-view-model-transformer to transform AMF model to the data view model.

<form-data-editor value="grant_type=authorization_code&code=SplxlOBeZQQYbYS6WxSbIA&redirect_uri=https%3A%2F%2Fclient%2Eexample%2Ecom%2Fcb" allowcustom allowdisableparams allowhideoptional></form-data-editor>



npm install --save @advanced-rest-client/form-data-editor

In an html file

    <script type="module">
      import '@advanced-rest-client/form-data-editor/form-data-editor.js';
    <form-data-editor allowcustom allowdisableparams></form-data-editor>
      const editor = document.querySelector('api-url-params-editor');
      editor.onchange = (e) {
        console.log('Payload value', e.target.value); // or e.detail.value
      editor.onmodel = (e) {
        console.log('View model', e.target.model); // or e.detail.value

In a LitElement

import { LitElement, html } from 'lit-element';
import '@advanced-rest-client/form-data-editor/form-data-editor.js';

class SampleElement extends PolymerElement {
  render() {
    return html`

  _valueHandler(e) {
    this.payloadValues = e.detail.value;

  _modelHandler(e) {
    this.viewModel = e.detail.value;
customElements.define('sample-element', SampleElement);

Behaviour controls


When set it renders a checkbox next to each for item that allows to disable the item. The item is in the view and in generated data mode but is ignored when producing the value.


When set is renders "add parameter" button and allows to create new form value. Mandatory for stand-alone use.


When item.required model property is not set and this value is set then it hides all optional items (not marked as required) and renders a checkbox to render hidden items in the view.

<form-data-editor allowhideoptional></form-data-editor>
  document.querySelector('form-data-editor').model = [
      name: 'param1',
      value: 'value1',
      required: true
      name: 'param2',
      value: 'value2',
      required: false

This editor renders only param1 parameter and hides param2 form item. The user can render hidden items at any time.

Generating view model from AMF model

You can produce the view model from model generated by AMF parser via api-view-model-transformer element. This element produces common model for query parameters, URI parameters, body, and headers.


  const api = await generateApiModel();
  const endpoint = '/api-endpoint';
  const operation = 'GET';
  const bodyParametersModelArray = getOperationRequestBodyFromModel(api, endpoint, operation); // some abstract method
  const transformer = document.querySelector('api-view-model-transformer');
  transformer.api = api; // This is required to compute ld+json keys!
  const viewModel = transformer.computeViewModel(bodyParametersModelArray);
  document.querySelector('form-data-editor').model = viewModel;


git clone https://github.com/advanced-rest-client/form-data-editor
cd form-data-editor
npm install

Running the demo locally

npm start

Running the tests

npm test

API components

This components is a part of API components ecosystem