Create the Signup Form

Let’s start by creating the signup form that’ll get the user’s email and password.

Add the Container

Create a new container at src/containers/Signup.js with the following.

import React, { Component } from 'react';
import { withRouter } from 'react-router-dom';
import {
  HelpBlock,
  FormGroup,
  FormControl,
  ControlLabel,
} from 'react-bootstrap';
import LoaderButton from '../components/LoaderButton';
import './Signup.css';

class Signup extends Component {
  constructor(props) {
    super(props);

    this.state = {
      isLoading: false,
      username: '',
      password: '',
      confirmPassword: '',
      confirmationCode: '',
      newUser: null,
    };
  }

  validateForm() {
    return this.state.username.length > 0
      && this.state.password.length > 0
      && this.state.password === this.state.confirmPassword;
  }

  validateConfirmationForm() {
    return this.state.confirmationCode.length > 0;
  }

  handleChange = (event) => {
    this.setState({
      [event.target.id]: event.target.value
    });
  }

  handleSubmit = async (event) => {
    event.preventDefault();

    this.setState({ isLoading: true });

    this.setState({ newUser: 'test' });

    this.setState({ isLoading: false });
  }

  handleConfirmationSubmit = async (event) => {
    event.preventDefault();

    this.setState({ isLoading: true });
  }

  renderConfirmationForm() {
    return (
      <form onSubmit={this.handleConfirmationSubmit}>
        <FormGroup controlId="confirmationCode" bsSize="large">
          <ControlLabel>Confirmation Code</ControlLabel>
          <FormControl
            autoFocus
            type="tel"
            value={this.state.confirmationCode}
            onChange={this.handleChange} />
          <HelpBlock>Please check your email for the code.</HelpBlock>
        </FormGroup>
        <LoaderButton
          block
          bsSize="large"
          disabled={ ! this.validateConfirmationForm() }
          type="submit"
          isLoading={this.state.isLoading}
          text="Verify"
          loadingText="Verifying…" />
      </form>
    );
  }

  renderForm() {
    return (
      <form onSubmit={this.handleSubmit}>
        <FormGroup controlId="username" bsSize="large">
          <ControlLabel>Email</ControlLabel>
          <FormControl
            autoFocus
            type="email"
            value={this.state.username}
            onChange={this.handleChange} />
        </FormGroup>
        <FormGroup controlId="password" bsSize="large">
          <ControlLabel>Password</ControlLabel>
          <FormControl
            value={this.state.password}
            onChange={this.handleChange}
            type="password" />
        </FormGroup>
        <FormGroup controlId="confirmPassword" bsSize="large">
          <ControlLabel>Confirm Password</ControlLabel>
          <FormControl
            value={this.state.confirmPassword}
            onChange={this.handleChange}
            type="password" />
        </FormGroup>
        <LoaderButton
          block
          bsSize="large"
          disabled={ ! this.validateForm() }
          type="submit"
          isLoading={this.state.isLoading}
          text="Signup"
          loadingText="Signing up…" />
      </form>
    );
  }

  render() {
    return (
      <div className="Signup">
        { this.state.newUser === null
          ? this.renderForm()
          : this.renderConfirmationForm() }
      </div>
    );
  }
}

export default withRouter(Signup);

Most of the things we are doing here are fairly straightforward but let’s go over them quickly.

Since we need to show the user a form to enter the confirmation code, we are conditionally rendering two forms based on if we have a user object or not.
We are using the LoaderButton component that we created earlier for our submit buttons.
We are also using the withRouter HOC on our Signup component.
Since we have two forms we have two validation methods called validateForm and validateConfirmationForm.
We are setting the autoFocus flags on our username and the confirmation code fields.
For now our handleSubmit and handleConfirmationSubmit don’t do a whole lot besides setting the isLoading state and a dummy value for the newUser state.

Also, let’s add a couple of styles in src/containers/Signup.css.

@media all and (min-width: 480px) {
  .Signup {
    padding: 60px 0;
  }

  .Signup form {
    margin: 0 auto;
    max-width: 320px;
  }
}

.Signup form span.help-block {
  font-size: 14px;
  padding-bottom: 10px;
  color: #999;
}

Add the Route

Finally, add our container as a route in src/Routes.js below our login route. We are using the AppliedRoute component that we created in the Add the user token to the state chapter.

<AppliedRoute path="/signup" exact component={Signup} props={childProps} />

And include our component in the header.

import Signup from './containers/Signup';

Now if we switch to our browser and navigate to the signup page we should see our newly created form. Try filling it in and ensure that it shows the confirmation code form as well.

Signup page added screenshot

Next, let’s connect our signup form to Amazon Cognito.