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Lab 8 - Create Order Form


Using the POST-Redirect-GET pattern, display an HTML form to create a new coffee order.

Don't forget to run *all* tests to make sure everything is still working before continuing.

A. GET Form

  1. Create an HTML template called order-coffee-form.html and put it in the templates directory. The body of the HTML file is as follows:

     <h1>New Coffee Order:</h1>
     <form action="/order-coffee" method="post">
       <p>Name: <input type="text" name="name"/></p>
       <p>Size: <input type="text" name="size" value="SMALL"/></p>
         <input type="submit" value="Order Coffee"/> 
         <input type="reset" value="Clear"/>
  2. In the CoffeeOrderWebController, create a new method, orderCoffeeForm(), that maps GET requests to /order-coffee and returns the above html as the view.

  3. Try it from the browser by going to locahost:8080/order-coffee and you should see the form.

B. Process Form

Add a processOrderCoffee() method to your web controller class that:

  1. Has a @PostMapping annotation, mapping to /order-coffee

  2. Takes a parameter @ModelAttribute("name") String name that will be the name for the order.

  3. Create a new CoffeeOrder instance with the incoming name, and a default size of SMALL.

  4. Save the order to the repository and hold on to the id that was assigned.

  5. Redirect to the coffee order view page for this new order

    NOTE: Instead of return the name of a view, you're returning a URL, e.g.:

    return "redirect:/coffee-order/" + id;

    where the id is the one assigned by the repository when you saved it.

Once you've completed the above steps,
check in with the instructor before moving on.

C. (optional) Handle Size from Form

The form has a field for "size" that you didn't use above. In this section, you'll need to figure out how to use that input to create a coffee with the given Size option.

  1. Modify the processOrderCoffee method signature to get the size text as a parameter.

    • Look at how the name parameter was passed in
  2. Use the size parameter to create the coffee, but if the user chose an invalid size, then use SMALL as the default.

    • What if the user types "large" in lower-case?