From d895b852a6e160496ffc760d46d3719a3d62ff86 Mon Sep 17 00:00:00 2001
From: Nathan Kinkade <nath@nkinka.de>
Date: Sun, 3 Feb 2008 23:23:24 +0000
Subject: Initial checkin of nutridb.org and basic subversion directory
 structure

---
 food_quantity.php | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 food_quantity.php

(limited to 'food_quantity.php')

diff --git a/food_quantity.php b/food_quantity.php
new file mode 100644
index 0000000..d86c6b3
--- /dev/null
+++ b/food_quantity.php
@@ -0,0 +1,70 @@
+<?php
+
+# include the main site config where various global variables
+# and libraries are included
+require("config.php");
+
+# if ndb_no wasn't passed to this script then just go to the
+# index page, as we can't do anything without it
+if ( isset($_REQUEST['food']) ) {
+	$food = $_REQUEST['food'];
+	$smarty->assign("food", $food);
+} else {
+	$_SESSION['systemMsg'] = "<span class='msgError'>You must specify a food.</span>";
+	header("Location: {$config->_rootUri}/");
+	exit;
+}
+
+# get the selected food and quantities from the database
+$sql = sprintf ("
+	SELECT foodDescs.sciname, %s AS foodDesc, weights.*
+	FROM foodDescs LEFT JOIN weights
+		ON foodDescs.ndb_no = weights.ndb_no
+	WHERE foodDescs.ndb_no = '%s'
+	",
+	$db->_dbConn->Concat("foodDescs.long_desc", "', '", "foodDescs.comname"),
+	$food
+);
+$db->Select($sql);
+# if for some reason the ndb_no doesn't exist, then drop them where they 
+# came from with an appropriate error message
+if ( $db->_rowCount > 0 ) {
+	$smarty->assign("foodQuantities", $db->_rows);
+} else {
+	$_SESSION['systemMsg'] = "<span class='msgError'>The food you specified doesn't seem to exist.</span>";
+	header("Location: {$config->_previousUri}");
+	exit;
+}
+
+# increment the counter for this food.  this counter could be used for all
+# sorts of things, for example it is the basis of the "sort by popularity" option.
+# the more people that select this item, the higher in the sort list it
+# will appear.
+incrementPopularityCounter($food, "foodDescs");
+
+# some data housekeeping
+for ( $idx = 0; $idx < count($db->_rows); $idx++ ) {
+	# the data from the USDA frequently has low order, unnecessary zeros to the
+	# right of the decimal.  here we strip off any superfluous zeros and/or
+	# decimal points
+	$db->_rows[$idx]['amount'] = trim($db->_rows[$idx]['amount'], ".0");
+
+	# trim any extra commas from the end of foodDesc, as may appear
+	# due to the concatenation of long_desc and comname with a comma
+	# where comname has no value, which it frequently doesnt'
+	$db->_rows[$idx]['foodDesc'] = trim($db->_rows[$idx]['foodDesc'], ", ");
+}
+
+$smarty->assign("foodQuantities", $db->_rows);
+
+# grab the various parts.  these sections are not printed to the screen
+# but rather dumped into smarty variables that will simply be printed
+# in the template, so the order doesn't matter here at the moment
+require("header.php");
+require("sidebar_left.php");
+require("sidebar_right.php");
+require("footer.php");
+
+$smarty->display("food_quantity.tpl");
+
+?>
-- 
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