A hotel booking application in React. Homework for the CodeYourFuture React module

Installation

1. Follow the instructions to fork & clone the GitHub repo
2. Install the dependencies by running npm install
3. Launch server using npm start
4. It should automatically open http://localhost:3000/

Exercises

Lesson 1

1. Extract the <button> in the src/Search.js component to be its own separate component.

2. Extract the <header> in the src/App.js to be its own separate component called Heading. Make sure that you import and render the <Heading /> component within src/App.js. In the Heading component, render the hotel's logo in an <img> (you can use https://image.flaticon.com/icons/svg/139/139899.svg or find your own image URL). You can adjust the CSS by editing src/App.css to make your Heading looks better if necessary.

3. In src/App.js, above the <Bookings /> component add a new component called TouristInfoCards which shows 3 cards. A card is a common user interface pattern with an image at the top and some related text underneath. The cards must link to peoplemakeglasgow.com, visitmanchester.com and visitlondon.com. The cards should contain the name of the city and an image of the city (use the same className as the example below to benefit from Bootstrap library which is already imported for you in the project). Use the JSX code below as an example of one card (note that in JSX, you'll need to use className instead of class):

<div className="card">
	<img src="..." className="card-img-top" />
	<div className="card-body">
		<a href="#" className="btn btn-primary">Go somewhere</a>
	</div>
</div>

4. Add a <Footer /> component at the bottom of the page. Pass the following array as a prop to this component: ["123 Fake Street, London, E1 4UD", "[email protected]", "0123 456789"]. Inside the component, use the data you passed as a prop to render a <ul> list with each item of the array displayed as a <li>. Hint: the .map() method will by useful.

5. Create a <SearchResults /> component that shows hotel bookings in a <table> element. Each booking will have an id, title, first name, surname, email, room id, check in date and check out date. You can make up data to show in the table. Then show <SearchResults /> component within the <Bookings /> component that is provided for you. Be sure to split out your components into small well-named components, similar to the method used in exercise 1. Hint: You will find some useful <table> examples in the Bootstrap documentation for tables

6. Instead of using your hard-coded data in the <SearchResults /> component, load data from the src/data/fakeBookings.json file in the <Bookings /> component and pass it as a prop to <SearchResults />. Hint: look in the <Bookings /> component for how to import data from a JSON file.

7. Add another column to your <SearchResults /> table which shows the number of days each booking is staying. Hint: try installing the moment.js library (you'll need to install it with npm install moment --save) and using the .diff() method to compare dates

Lesson 2

8. Within src/App.js, render the <Restaurant /> component (that is provided for you in src/Restaurant.js) underneath the <Bookings /> component. Then convert the <Restaurant /> component to a class component.

9. Add a method to the Restaurant class named addOrder. Use console.log to log a "Add order" message. Remember to use the addOrder = () => {} syntax. Add a onClick handler to the Add <button> that calls this.addOrder. Ensure that clicking on the button logs your "Add order" message in the console.

10. Extract the <button> in the <Restaurant /> component to a new component named RestaurantButton. Pass the this.addOrder method as a prop to the <RestaurantButton /> component and use this prop in the onClick handler. Ensure that clicking the button still logs the "Add order" message.

11. Within the <Restaurant /> component, initialise state to have a key named orders and a value of 0 (hint: use the constructor method). Then replace the orders variable within the render method with this.state.orders that we just created.

12. Within the addOrder method of <Restaurant />, use the this.setState method to increment the orders state by 1. Hint: remember that if we are using previous state to calculate the new state, we must use a callback function with this.setState.

13. Extract the <li> containing "Pizzas" within the <Restaurant /> component to a new component named Order. Move orders initial state set up in the constructor and the addOrder method from <Restaurant /> to the new <Order /> component. Make sure that clicking the "Add" button still increments the number of orders. Then replace the hard-coded string "Pizzas" in <Order /> with a prop named orderType. Finally, render another <Order /> component but this time with the prop orderType="Salads".

14. Within the <SearchResults /> component or it's child components, add an onClick handler to each row in the table (hint: on the <tr> element). When clicked, the row is "selected" and highlighted with a different colour. Hint: use state to add a class to the className. When clicking on the row for a second time, "unselect" the row and remove the coloured highlighting.

Lesson 3

15. Within your <Header /> component, render the <Clock /> component (that is provided for you in src/Clock.js). Fix the problem where the setTimeout timer is not cleared if the component is unmounted. Hint: look at the Clock exercise you did in class.

16. Convert the src/Search.js component into a class component. Add a constructor method and initialise a new state searchInput to an empty string ''. Add a value property to the <input> that you set to your new searchInput state. Then create a new method handleSearchInput taking an event parameter. This method should use setState to update the state searchInput with what the user typed in the input (hint: use event.target.value to get the input value). Finally add a onChange property to the <input> set to the method handleSearchInput.

17. Still in the <Search /> component, add an onSubmit handler to the <form> element. When the form is submitted (try clicking the search button), get the value of the state searchInput and pass it as a parameter to the this.props.search prop function that has been provided for you. Look in the console, you should see the text that is typed in the search box when submitting the form (note: also your submit handler should take an event parameter and add the line event.preventDefault() to prevent the browser to implicitely submit the form).

18. In the <Bookings /> component, use state to hold the FakeBookings data instead of directly passing it to <SearchResults />. Hint: use a constructor method to initialise the state with the FakeBookings variable.

19. Still in the <Bookings /> component, implement the search method. It must use the searchVal (that you just passed from the <Search /> component) to filter the search results. The filter function should return results where firstName or surname match searchVal. Once filtered, use this.setState to update the results rendered in <SearchResults />.

20. Again in the <Bookings /> component, use the fetch() function to get data from https://cyf-react.glitch.me. Hints:

• Replace FakeBookings in the state initialise with null (because we haven't fetched any results yet!)
• Add a componentDidMount() method that calls the fetch() function and then use .then() to handle the response. Try looking at your Pokemon app that you worked on in class for an example
• When the response comes back use this.setState to update the results

21. Now show a loading state in <Bookings /> while the data from the server is being fetched. To test this, try loading data from https://cyf-react.glitch.me/delayed, which has a 5 second delay before returning the data. Hint: try looking at your Pokemon app that you worked on in class for an example

22. Finally, display an error message in <Bookings /> if there is an HTTP error when fetching data from the server. To test this, try loading data from https://cyf-react.glitch.me/error, which will return a 500 HTTP error. Hint: Try looking at your Pokemon app that you worked on in class for an example

Stretch Goals

1. Add a form with <input>s for each of the booking fields (first name, surname, title, room id, check in date, check out date) to the bottom of the page. Submitting the form adds the booking to the result table. Note that the new booking won't persist if you refresh the page.

2. Add an onClick handler to the columns of the result table, which sorts the results ascending (A -> Z). Clicking the column again will reverse the sort order to descending (Z -> A). Hint: try using the .sort() method with a callback to do custom sorting