8.2 Deleting a Watcher
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| Figure 8-4 shows the confirmation form presented when a user clicks the delete link. Figure 8-4. Deleting a watcher The code to present the deletion form is shown in Example 8-2. A small amount of validation is performed at the top of the page; otherwise, the JSP is mostly concerned with the user interface. Example 8-2. Deleting a watcher JSP<%@ page contentType="text/html; charset=iso-8859-1" language="java" errorPage="" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <% boolean delete = false; String productID = request.getParameter("productID"); if(request.getParameter("Delete") != null) delete = true; boolean deleted = false; if(delete) { deleted = com.cascadetg.ch04.Search.removeSearch(productID); }; %> <head> <title>Chapter 4: Competitive Analysis</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <link href="default.css" rel="stylesheet" type="text/css" /> </head> <body><% if (delete) { if(deleted) { %> <p>The item has been deleted.</p> <% } else { %> <p>Item not found.</p> <% } } else{ %> <p>Are you sure you want to delete the item "<%= productID %>"?</p> <form name="deleteForm" method="post" action="delete.jsp"> <input type="hidden" name="productID" value="<%= productID %>"/> <input name="Delete" type="submit" value="Delete" /> </form> <% } %> <p><a href="list.jsp">Return to list.</a></p> </body> </html> |
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