React-Form

Simple, powerful, highly composable forms in React

Go to live examples, code and docs!

Features

🚀 Lightweight and fast.
🔥 Built-in input primitives for building quickly.
⚖️ Scales from tiny to massively complex forms with ease.
🚚 Easily integrate with 3rd party components or build your own!
✍️ Nested Fields and ultra-composable syntax for complex form shapes.
⏲ Asynchronous validation
🎛 Simple API that supports manipulating values, errors, warnings, and successes
👉 Render Props!
😂 Works in IE (with a polyfill or two)

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Installation

npm install --save react-form

Basic Usage

import { Form, Text, Radio, RadioGroup, TextArea, Checkbox } from 'react-form';

const ExampleForm = () => (
  <Form render={({
    submitForm
  }) => (
    <form onSubmit={submitForm}>
      <Text field="firstName" placeholder='First Name' />
      <Text field="lastName" placeholder='Last Name' />
      <RadioGroup field="gender">
        <Radio value="male" />
        <Radio value="female" />
      </RadioGroup>
      <TextArea field="bio" />
      <Checkbox field="agreesToTerms" />
      <button type="submit">Submit</button>
    </form>
  )} />
)

Array and Data-driven fields

import { Form, Text } from "react-form";

const ExampleForm = () => (
  <Form
    render={({ submitForm, values, addValue, removeValue }) => (
      <form onSubmit={submitForm}>
        <Text field="firstName" placeholder="First Name" />
        <Text field="lastName" placeholder="Last Name" />
        <div>
          Friends
          {values.friends &&
            values.friends.map((friend, i) => (
              // Loop over the friend values and create fields for each friend
              <div>
                <Text
                  field={["friends", i, "firstName"]}
                  placeholder="First Name"
                />
                <Text
                  field={["friends", i, "lastName"]}
                  placeholder="Last Name"
                />
                // Use the form api to add or remove values to the friends array
                <button type="button" onClick={() => removeValue("friends", i)}>
                  Remove Friend
                </button>
              </div>
            ))}
          // Use the form api to add or remove values to the friends array
          <button type="button" onClick={() => addValue("friends", {})}>Add Friend</button>
        </div>
        <button type="submit">Submit</button>
      </form>
    )}
  />
);

Advanced Field reuse, and Nested Fields

import { Form, FormApi, NestedField, Text } from "react-form"

// Reuse The user fields for the user and their friends!
const UserFields = () => (
  <div>
    <Text field="firstName" placeholder="First Name" />
    <Text field="lastName" placeholder="Last Name" />
  </div>
)

const ExampleForm = () => (
  <Form
    onSubmit={values => console.log(values)}
    render={({ submitForm, values, addValue, removeValue }) => (
      <form onSubmit={submitForm}>
        <UserFields />
        <NestedField
          field="friends"
          render={() => (
            // Create a new nested field context
            <div>
              Friends
              {values.friends &&
                values.friends.map((friend, i) => (
                  <div key={i}>
                    <NestedField
                      field={i}
                      render={() => (
                        <UserFields /> // Now the user fields will map to each friend!
                      )}
                    />
                    <button type="button" onClick={() => removeValue("friends", i)}>
                      Remove Friend
                    </button>
                  </div>
                ))}
              <button type="button" onClick={() => addValue("friends", {})}>
                Add Friend
              </button>
            </div>
          )}
        />
        <button type="submit">Submit</button>
      </form>
    )}
  />
)

Examples & Documentation

Visit react-form.js.org for examples and documentation for 3.x.x of React-Form.

Older versions:

License

code-matt/react-form

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