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    0.9.5 • Public • Published

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    React Form Builder 2

    A complete react form builder that interfaces with a json endpoint to load and save generated forms.

    • Upgraded to React 16.8.6
    • Bootstrap 4.x, Font-Awesome 5.x
    • Use react-dnd for Drag & Drop
    • Save form data with dummy api server
    • Show posted data on readonly form
    • Multi column row
    • Custom Components

    DEMO Slow Loading.... back-end is running at FREE Heroku, hence it may not work if free time runs out for month.

    Editing Items

    Basic Usage

    import React from 'react';
    import ReactDOM from 'react-dom';
    import { ReactFormBuilder } from 'react-form-builder2';
    import 'react-form-builder2/dist/app.css';
      <ReactFormBuilder />,


    var items = [{
      key: 'Header',
      name: 'Header Text',
      icon: 'fa fa-header',
      static: true,
      content: 'Placeholder Text...'
      key: 'Paragraph',
      name: 'Paragraph',
      static: true,
      icon: 'fa fa-paragraph',
      content: 'Placeholder Text...'
      saveUrl='path/to/POST/built/form.json' />

    React Form Generator

    Now that a form is built and saved, let's generate it from the saved json.

    import React from 'react';
    import ReactDOM from 'react-dom';
    import { ReactFormGenerator } from 'react-form-builder2';
    import 'react-form-builder2/dist/app.css';
        task_id={12} // Used to submit a hidden variable with the id to the form from the database.
        answer_data={JSON_ANSWERS} // Answer data, only used if loading a pre-existing form with values.
        authenticity_token={AUTH_TOKEN} // If using Rails and need an auth token to submit form.
        data={JSON_QUESTION_DATA} // Question data

    Form Params

    Name Type Required? Description
    form_action string Required URL path to submit the form
    form_method string Required Verb used in the form submission.
    action_name string Optional Defines form submit button text. Defaults to "Submit"
    onSubmit function optional Invoke when submit data, if exists will override form post.
    data array Required Question data retrieved from the database
    back_action string Optional URL path to go back if needed.
    back_name string Optional Button text for back action. Defaults to "Cancel".
    task_id integer Optional User to submit a hidden variable with id to the form on the backend database.
    answer_data array Optional Answer data, only used if loading a pre-existing form with values.
    authenticity_token string Optional If using Rails and need an auth token to submit form.
    hide_actions boolean Optional If you would like to hide the submit / cancel buttons set to true.
    skip_validations boolean Optional Suppress form validations on submit, if set to true.
    display_short boolean Optional Display an optional "shorter page/form" which is common for legal documents or situations where the user will just have to sign or fill out a shorter form with only the critical elements.
    read_only boolean Optional Shows a read only version which has fields disabled and removes "required" labels.
    variables object Optional Key/value object that can be used for Signature variable replacement.

    Read only Signatures

    Read only signatures allow you to use a saved/canned signature to be placed into the form. The signature will be passed in through the variables property to ReactFormGenerator and ReactFormBuilder.

    To use a read only signature, choose the "Read only" option and enter the key value of the variable that will be used to pass in the signature.

    The signature data should be in base 64 format.

    There is a variables.js file that contains a sample base 64 signature. This variable is passed into the demo builder and generator for testing. Use the variable key "JOHN" to test the variable replacement.

    Vendor Dependencies

    In order to make the form builder look pretty, there are a few dependencies other than React. Style sheets from Bootstrap and FontAwesome must be added to index.html. See the example code in index.html for more details.

    • Bootstrap
    • FontAwesome


    All relevant styles located in css/application.css.scss.


    $ yarn install
    $ yarn run build:dist
    $ yarn run serve:api
    $ yarn start

    Then navigate to http://localhost:8080/ in your browser and you should be able to see the form builder in action.


    • to customize the field edit form copy "src/form-elements-edit.jsx" to your project and pass it to the ReactFormBuilder as a prop. Here is an example
        renderEditForm={props => <FormElementsEdit {...props}/>}
    • to customize the ReactFormGenerator submit button use it like this
        actionName={"Set this to change the default submit button text"}
        submitButton={<button type={"submit"} className={"btn btn-primary"}>Submit</button>}

    Custom Components

    • Import component registry from react-form-builder2
    import { ReactFormBuilder, ElementStore, Registry } from 'react-form-builder2';
    • Simple Custom Component
    const TestComponent = () => <h2>Hello</h2>;
    • Custom Component with input element
    const MyInput = React.forwardRef((props, ref) => {
      const { name, defaultValue, disabled } = props;
      return <input ref={ref} name={name} defaultValue={defaultValue} disabled={disabled} />;
    • Register custom components to be used in form builder
    Registry.register('MyInput', MyInput);
    Registry.register('TestComponent', TestComponent);
    • Define Custom Components in Toolbar
    const items = [{
      key: 'TestComponent',
      element: 'CustomElement',
      component: TestComponent,
      type: 'custom',
      field_name: 'test_component',
      name: 'Something You Want',
      icon: 'fa fa-cog',
      static: true,
      props: { test: 'test_comp' },
      label: 'Label Test',
    }, {
      key: 'MyInput',
      element: 'CustomElement',
      component: MyInput,
      type: 'custom',
      forwardRef: true,
      field_name: 'my_input_',
      name: 'My Input',
      icon: 'fa fa-cog',
      props: { test: 'test_input' },
      label: 'Label Input',
    // Additional standard componets, you don't need full definition if no modification is required. 
      key: 'Header',
    }, {
      key: 'TextInput',
    }, {
      key: 'TextArea',
    }, {
      key: 'RadioButtons',
    }, {
      key: 'Checkboxes',
    }, {
      key: 'Image',
    • Use defined Toolbar in ReactFormBuilder
    • Find working example here



    $ npm test

    Test is not working at this moment.


    npm i react-form-builder2

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    • kiho