Studio: CheeseMVC

In this studio, we'll extend the application that you started building in the lesson videos for Class 4.

Add Description Field

If you didn't get to the exercises for Class 4, go back and complete the first one, to add a description field to the CheeseMvc app.

Remove Cheese

Add functionality to remove cheese(s) from the list. We present two ways to do this. Read about each, and choose which you would like to pursue. For an additional challenge, try to do each!

Remove Cheese Via New View

Create a new controller method and view to present a form to remove cheese. The form should make a POST request to a controller at the same URL as the form, and should redirect to the Index view associated with the Cheese controller.

When presenting the form, you have a couple of options:

1. Present a checkbox next to each cheese. Recall that a checkbox is an input element of type='checkbox'. Look up details on w3schools. For this scenario, you'll want the same name attribute for each checkbox. Additionally, it will be possible for users to submit multiple cheeses for deletion at once, so in the controller handling form submission, the input parameter should be a collection. For example, if you have name='cheese' on each checkbox, you'll want an input parameter ArrayList<String> cheese.
2. Present a dropdown to allow the user to select which cheese they would like to delete. This approach allows for only one item to be deleted at a time. You'll need to use a select element for this, which you can read about on w3schools.

To remove an item from an a HashMap, have a look at the HashMap documentation.

Be sure to add a link to the new Remove Cheese page in the navigation in your fragments.html file!

Bonus Missions

Add Validation: Validate the user's input when adding a new cheese, in the appropriate existing controller. While the description field should be optional, the name field should be required, with only alphabetic characters and spaces allowed. If the user doesn't provide a valid name, present them with the form again with an error message describing the problem.