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JavaScript React by Example Building the Application Creating the Counter

Peter Gess
Peter Gess
16,553 Points
Posted by 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
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;