11.1 The Winestore Home Page
| only for RuBoard - do not distribute or recompile |
11.1 The Winestore Home Page
Example 11-1 shows the final implementation of the winestore home page containing the Hot New Wines panel. The Hot New Wines panel is discussed in more detail in Chapter 4, and the one-component functionality for adding one or a dozen bottles of wine to the cart is discussed in Chapter 5. We discuss how clicks on the add-to-cart links are managed later in Section 11.2.
The Hot New Wines panel is based on scripts presented in Chapter 4 and is encapsulated in the function showPanel( ) in Example 11-1. The functions showVarieties( ), which displays the varieties of a specific wine, and showPricing( ), which shows the per-bottle and the per-case price of a wine, are part of the include.inc file discussed in Chapter 10.
The main body of the script presents the front page using a mixture of HTML and calls to functions. The function showCart( ) displays an embedded link cart icon and the dollar total and number of items in the cart. The function showMessage( ) displays any message registered in the session variable message, and the showLogin( ) function displays the user's login status. The function loginButtons( ) shows the user different buttons depending on whether or not she is currently logged in. All these functions are part of include.inc and discussed in Chapter 10.
The following code fragment inserts the file disclaimer into the body of the HTML:
require 'disclaimer';
The file is a text message that alerts the user that our system doesn't really sell wines and that the scripts are covered by the GNU public license.
Example 11-1. cart.1 displays the winestore home page
<?php // This is the script that shows the user a list of // wines, and allows them to select wines to add to // their shopping cart include 'include.inc'; set_error_handler("errorHandler"); function showPanel($query, $connection) { // Run the query on the database through // the connection if (!($result = @ mysql_query ($query, $connection))) showerror( ); echo "<table border=0>\n"; // Process the three new wines while ($row = @ mysql_fetch_array($result)) { // Begin a heading for the wine echo "<tr>\n\t<td bgcolor=\"maroon\">" . "<b><font color=\"white\">" . $row["year"] . " " . $row["winery_name"] . " " . $row["wine_name"] . " "; // Print the varieties for this wine echo showVarieties($connection, $row["wine_id"]); // Finish the first row heading echo "</font></b></td>\n</tr>\n"; // Print the wine review if (!empty($row["description"])) echo "<tr>\n\t<td bgcolor=\"silver\">" . "<b>Review: </b>" . $row["description"]; "</td>\n</tr>\n"; // Print the pricing information echo "<tr>\n\t<td bgcolor=\"gray\">"; // Print out the pricing information showPricing($connection, $row["wine_id"]); echo "</td>\n</tr>\n"; // Show the single-bottle add to cart link echo "<tr>\n\t<td align=\"right\">" . "<a href=\"example.cart.3.php?" . "qty=1&winewine_id"] . "\">Add a bottle to the cart</a>"; // Show the dozen add to cart link echo " " . "<a href=\"example.cart.3.php?qty=12&winewine_id"] . "\">Add a dozen</a></td>\n"; echo "</tr>\n"; // Blank row for presentation echo "\n<tr>\n\t<td></td>\n</tr>\n"; } echo "</table>\n"; } // --------- // Initialize a session. This call either creates // a new session or re-establishes an existing one. session_start( ); // Open a connection to the DBMS if (!($connection = @ mysql_connect($hostName, $username, $password))) showerror( ); if (!mysql_select_db($databaseName, $connection)) showerror( ); ?> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html401/loose.dtd"> <html> <head> <title>Hugh and Dave's Online Wines</title> </head> <body bgcolor="white"> <?php // Show the user login status showLogin( ); // Show the dollar and item total of the cart showCart($connection); ?> <h1>Here are some Hot New Wines!</h1> <?php // Display any messages to the user showMessage( ); // Show the "Hot New Wines" $query = "SELECT wi.winery_name, w.year, w.wine_name, w.wine_id, w.description FROM wine w, winery wi, inventory i WHERE w.winery_id = wi.winery_id AND w.wine_id = i.wine_id AND w.description IS NOT NULL GROUP BY w.wine_id ORDER BY i.date_added DESC LIMIT 3"; // Include our disclaimer require 'disclaimer'; // Show the user the "Hot New Wines" panel showPanel($query, $connection); echo "<form action=\"example.cart.5.php\"" . " method=\"GET\">\n"; echo "<table>\n<tr>\n"; // If the cart has contents, offer the opportunity // to view the cart or empty the cart. if (session_is_registered("order_no")) { echo "\t<td><input type=\"submit\" " . "name=\"empty\" value=\"Empty Cart\"></td>\n"; echo "\t<td><input type=\"submit\" " . "name=\"view\" value=\"View Cart\"></td>\n"; } // Show the user the search screen button echo "\t<td><input type=\"submit\" " . "name=\"search\" value=\"Search\"></td>\n"; // Show the user either a login or logout button loginButtons( ); echo "\n</tr>\n</table>\n"; echo "</form>\n"; ?> <br><a href="http://validator.w3.org/check/referer"> <img src="/books/2/579/1/html/2/http://www.w3.org/Icons/valid-html401" height="31" width="88" align="right" border="0" alt="Valid HTML 4.01!"></a> </body> </html> | only for RuBoard - do not distribute or recompile |
EAN: 2147483647
Pages: 134