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JavaScript React by Example Building the Application Creating the Counter

Peter Gess
Peter Gess
16,553 Points

Nothing happens when clicking the "remove" button

Even though I have passed totalInvited as props I am not seeing anything fire when clicking "remove" like he is in the video.

1 Answer

Peter Gess
Peter Gess
16,553 Points

Here is my app.js, let me know if you need counter:

import React, { Component } from 'react';
import './App.css';
import GuestList from './GuestList';
import Counter from './Counter';

class App extends Component {

  state = {
    isFiltered: false,
    pendingGuest: '',
    guests: [
      {
        name: 'Peter',
        isConfirmed: false,
        isEditing: false
      },
      {
        name: 'Pat',
        isConfirmed: true,
        isEditing: false
      },
      {
        name: 'Luke',
        isConfirmed: true,
        isEditing: true
      }
    ]
  }

  toggleGuestPropertyAt = (property, indexToChange) =>
    this.setState({
      guests: this.state.guests.map((guest, index) => {
        if (index === indexToChange) {
          return {
            ...guest,
           [property]: !guest[property]
          };
        }
        return guest;
      })
    });

  toggleConfirmationAt = index =>
    this.toggleGuestPropertyAt('isConfirmed', index);

  removeGuestAt = index => 
    this.setState({
      guests: [
        ...this.state.guests.slice(0, index),
        ...this.state.guests.slice(index + 1)
      ]
    })

  toggleEditingAt = index =>
    this.toggleGuestPropertyAt('isEditing', index); 

  setNameAt = (name, indexToChange) =>
    this.setState({
      guests: this.state.guests.map((guest, index) => {
        if (index === indexToChange) {
          return {
            ...guest,
           name
          };
        }
        return guest;
      })
    });

  toggleFilter = () =>
    this.setState({ isFiltered: !this.state.isFiltered })

  handleNameInput = e => 
    this.setState({ pendingGuest: e.target.value });

  newGuestSubmitHandler = e => {
    e.preventDefault();
    this.setState({ guests: [
       {
        name: this.state.pendingGuest,
        isConfirmed: false,
        isEditing: false
        },
         ...this.state.guests
      ],
      pendingGuest: ''
    });
  } 


  getTotalInvited = () => this.state.guests.length;
  // getAttendingGuests = () =>
  // getUnconfirmedGuests = () =>

  render() {
  const totalInvited = this.getTotalInvited();
    return (
      <div className="App">
      <header>
        <h1>RSVP</h1>
        <p>A Treehouse App</p>
        <form onSubmit={this.newGuestSubmitHandler}>
            <input
             type="text"
             onChange={this.handleNameInput}
             value={this.state.pendingGuest} 
             placeholder="Invite Someone" />
            <button type="submit" name="submit" value="submit">Submit</button>
        </form>
      </header>
      <div className="main">
        <div>
          <h2>Invitees</h2>
          <label>
            <input type="checkbox"
            onChange={this.toggleFilter}
            checked={this.state.isFiltered} /> Hide those who haven't responded
          </label>
        </div>
        <Counter
          totalInvited={totalInvited} />

       <GuestList 
       guests={this.state.guests}
       toggleConfirmationAt={this.toggleConfirmationAt} 
       toggleEditingAt={this.toggleEditingAt}
       setNameAt={this.setNameAt}
       isFiltered={this.state.isFiltered}
       removeGuestAt={this.state.removeGuestAt}
       pendingGuest={this.state.pendingGuest}
       />

      </div>
    </div>
    );
  }
}

export default App;