ASP

Calorie Counter Using WAP and ASP

Many people are more conscious of what they eat than ever before. (I count myself as a member of that club). The biggest challenge faced by many in the quest for a healthier lifestyle is the ubiquitous “lack of time” excuse. To help out, I have created a simple WAP application that allows for one to search for different foods and get related nutritional information, based on data from the American Diabetes Association. In this article, I’ll go over the creation of the application, and in the process, make you a little bit more health conscious.

Author Info:

By: Tim Haight

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February 23, 2004

TABLE OF CONTENTS:

· Calorie Counter Using WAP and ASP
· Hosting
· Index.wml
· Application Deconstruction: Search.asp

This file contains the DSN-less connection, a SQL query, and the results. Note that the SQL query uses a like clause. This allows you to enter part of a food name and get back every food that contains that search string. This feature is useful for any type of SQL query where the exact search string is vague.

<%@ Language = "JScript"; %><% Response.ContentType = "text/vnd.wap.wml";
%><?xml version="1.0"?>

<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.2//EN"
"http://www.wapforum.org/DTD/wml_1.2.xml">

<wml>
 <card id="card1" title="Food Results">
 
 Food Search Results 
<%

// dsn-less connection to food.mdb

conn = Server.CreateObject("ADODB.Connection");
rs = Server.CreateObject("ADODB.Recordset");

conn.Open("DRIVER={Microsoft Access Driver (*.mdb)};DBQ=" +
Server.MapPath("Food.mdb") + ";");

// create a string to hold the SQL query
sqlQuery = "SELECT * FROM tblFoods where Description like '%" + Request.QueryString("Food") + "%' ORDER BY DESCRIPTION";

// execute the query on the database
rs.Open(sqlQuery, conn, adOpenForwardOnly, adLockReadOnly, adCmdText);

while (!rs.EOF)
 {
 Response.Write("Description: ");
 Response.Write(rs("Description") + " ");
 Response.Write("Serving: ");
 Response.Write(rs("Unit") + " ");
 Response.Write("Fat: ");
 Response.Write(rs("Fat") + " ");
 Response.Write("Calories: ");
 Response.Write(rs("Calories") + " ");
 Response.Write("Carbs: ");
 Response.Write(rs("Carb") + " ");
 Response.Write("Cholesterol: ");
 Response.Write(rs("Cholesterol") + " ");
 Response.Write("-----------------");
 Response.Write(" ");
 rs.MoveNext();
 }
 conn.Close();
%>
 
 </card>
</wml>

After these files are uploaded to the hosting server, you should be able to view them with any WAP enabled device, emulator, or browser. Now, you can’t use the “well, I didn’t know that the hamburger had 700 calories” excuse. Have fun, and stay healthy!

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