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ratings.php
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Urbanspork</title>
<link rel="icon" href="utensil-spoon.ico">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<link rel="stylesheet" href="css/style.css">
<style>
a {
color: #2a2730;
}
</style>
<script defer src="https://use.fontawesome.com/releases/v5.0.9/js/solid.js" integrity="sha384-P4tSluxIpPk9wNy8WSD8wJDvA8YZIkC6AQ+BfAFLXcUZIPQGu4Ifv4Kqq+i2XzrM" crossorigin="anonymous"></script>
<script defer src="https://use.fontawesome.com/releases/v5.0.9/js/fontawesome.js" integrity="sha384-2IUdwouOFWauLdwTuAyHeMMRFfeyy4vqYNjodih+28v2ReC+8j+sLF9cK339k5hY" crossorigin="anonymous"></script>
<script defer src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script defer src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script defer src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
</head>
<body>
<nav class="navbar navbar-expand-md navbar-light bg-light mb-4">
<a class="navbar-brand" href="index.php"><i class="fas fa-utensil-spoon"></i> Urbanspork</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarCollapse">
<ul class="navbar-nav mr-auto">
<li class="nav-item">
<a class="nav-link" href="index.php"><i class="fas fa-home"></i> Home<span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="restaurants.php"><i class="fas fa-utensils"></i> Restaurants</a>
</li>
<li class="nav-item active">
<a class="nav-link" href="ratings.php"><i class="fas fa-thumbs-up"></i> Ratings</a>
</li>
<li class="nav-item">
<a class="nav-link" href="raters.php"><i class="fas fa-pencil-alt"></i> Raters</a>
</li>
<li class="nav-item">
<a class="nav-link" href="queries.php"><i class="fas fa-database"></i> Queries</a>
</li>
</ul>
</div>
</nav>
<div class="container">
<h1>Ratings</h1>
<?php
require "connection.php";
if ($_GET['id'] != null) {
$id = $_GET['id'];
$name = pg_query("SELECT name FROM restaurants.restaurant WHERE restaurantid = {$id}") or die('Query failed: ' . pg_last_error());
$name = pg_fetch_array($name, null, PGSQL_ASSOC)['name'];
echo "<div class=\"col-xs-12\" style=\"height:50px;\"></div>\n";
echo "<h2><a href='info.php?id=$id'>$name</a></h2>\n";
echo "<div class=\"col-xs-12\" style=\"height:50px;\"></div>\n";
echo "<h4>Ratings</h4>\n";
echo "<table class='table'>\n";
echo "<thead>\n";
echo "<tr>\n";
echo "<th scope=\"col\">Name</th>\n";
echo "<th scope=\"col\">Price</th>\n";
echo "<th scope=\"col\">Food</th>\n";
echo "<th scope=\"col\">Mood</th>\n";
echo "<th scope=\"col\">Staff</th>\n";
echo "<th scope=\"col\">Date</th>\n";
echo "</tr>\n";
echo "</thead>\n";
echo "<tbody>\n";
$avg_price = 0;
$avg_food = 0;
$avg_mood = 0;
$avg_staff = 0;
$count = 0;
$ratings = pg_query("SELECT userid, name, price, food, mood, staff, date FROM restaurants.rating NATURAL JOIN restaurants.rater WHERE restaurantid={$id} ORDER BY date DESC;") or die('Query failed: ' . pg_last_error());
while ($rating = pg_fetch_array($ratings, null, PGSQL_ASSOC)) {
$userid = $rating['userid'];
$name = $rating['name'];
$price = $rating['price'];
$avg_price += $price;
$food = $rating['food'];
$avg_food += $food;
$mood = $rating['mood'];
$avg_mood += $mood;
$staff = $rating['staff'];
$avg_staff += $staff;
$date = $rating['date'];
$count++;
echo "<tr>\n";
echo "<td><a href='raters.php?id={$userid}'>$name</a></td>\n";
echo "<td>$price</td>\n";
echo "<td>$food</td>\n";
echo "<td>$mood</td>\n";
echo "<td>$staff</td>\n";
echo "<td>$date</td>\n";
echo "</tr>\n";
}
$avg_price = round($avg_price/$count,1);
$avg_food = round($avg_food/$count,1);
$avg_mood = round($avg_mood/$count,1);
$avg_staff = round($avg_staff/$count,1);
echo "<tr>\n";
echo "<td><b>Average</b></td>\n";
echo "<td><b>$avg_price</b></td>\n";
echo "<td><b>$avg_food</b></td>\n";
echo "<td><b>$avg_mood</b></td>\n";
echo "<td><b>$avg_staff</b></td>\n";
echo "<td>-</td>\n";
echo "</tr>\n";
echo "</tbody>\n";
echo "</table>\n";
echo "<div class=\"col-xs-12\" style=\"height:50px;\"></div>\n";
echo "<h4>Menu Item Ratings</h4>\n";
echo "<table class='table'>\n";
echo "<thead>\n";
echo "<tr>\n";
echo "<th scope=\"col\">Name</th>\n";
echo "<th scope=\"col\">Item</th>\n";
echo "<th scope=\"col\">Rating</th>\n";
echo "<th scope=\"col\">Comment</th>\n";
echo "<th scope=\"col\">Date</th>\n";
echo "</tr>\n";
echo "</thead>\n";
echo "<tbody>\n";
$avg_val = 0;
$count = 0;
$ratings = pg_query("select rater.userid, rater.name as rater, menuitem.name as item, rating, comment, date from restaurants.ratingitem natural join restaurants.menuitem left join restaurants.rater on ratingitem.userid = rater.userid where restaurantid=$id order by date desc
") or die('Query failed: ' . pg_last_error());
while ($rating = pg_fetch_array($ratings, null, PGSQL_ASSOC)) {
$userid = $rating['userid'];
$rater = $rating['rater'];
$item = $rating['item'];
$value = $rating['rating'];
$comment = $rating['comment'];
$date = $rating['date'];
$avg_val += $value;
$count++;
echo "<tr>\n";
echo "<td><a href='raters.php?id={$userid}'>$rater</a></td>\n";
echo "<td><a href='menu.php?id={$id}'>$item</a></td>\n";
echo "<td>$value</td>\n";
echo "<td>$comment</td>\n";
echo "<td>$date</td>\n";
echo "</tr>\n";
}
$avg_val = round($avg_val/$count, 1);
echo "</tbody>\n";
echo "</table>\n";
echo "<p><b>Average item rating is $avg_val</b></p>";
} else {
$restaurants = pg_query("SELECT restaurantid, name FROM restaurants.restaurant") or die('Query failed: ' . pg_last_error());
while ($restaurant = pg_fetch_array($restaurants, null, PGSQL_ASSOC)) {
$id = $restaurant['restaurantid'];
$name = $restaurant['name'];
echo "<div class=\"col-xs-12\" style=\"height:50px;\"></div>";
echo "<h4><a href='ratings.php?id=$id'>$name</a></h4>\n";
$price = pg_query("SELECT AVG(price) AS price FROM restaurants.rating WHERE restaurantid={$id}") or die('Query failed: ' . pg_last_error());
$price = round(pg_fetch_array($price, null, PGSQL_ASSOC)['price'], 1);
echo "<div class=\"row\">\n";
echo "<div class=\"col-md-4\">Price</div>\n";
echo "<div class='col-md-8'>$price</div>\n";
echo "</div>\n";
$food = pg_query("SELECT AVG(food) AS food FROM restaurants.rating WHERE restaurantid={$id}") or die('Query failed: ' . pg_last_error());
$food = round(pg_fetch_array($food, null, PGSQL_ASSOC)['food'], 1);
echo "<div class=\"row\">\n";
echo "<div class=\"col-md-4\">Food</div>\n";
echo "<div class='col-md-8'>$food</div>\n";
echo "</div>";
$mood = pg_query("SELECT AVG(mood) AS mood FROM restaurants.rating WHERE restaurantid={$id}") or die('Query failed: ' . pg_last_error());
$mood = round(pg_fetch_array($mood, null, PGSQL_ASSOC)['mood'], 1);
echo "<div class=\"row\">\n";
echo "<div class=\"col-md-4\">Mood</div>\n";
echo "<div class='col-md-8'>$mood</div>\n";
echo "</div>";
$staff = pg_query("SELECT AVG(staff) AS food FROM restaurants.rating WHERE restaurantid={$id}") or die('Query failed: ' . pg_last_error());
$staff = round(pg_fetch_array($staff, null, PGSQL_ASSOC)['food'], 1);
echo "<div class=\"row\">\n";
echo "<div class=\"col-md-4\">Staff</div>\n";
echo "<div class='col-md-8'>$staff</div>\n";
echo "</div>";
$overall = round(($price + $food + $mood + $staff)/4, 1);
echo "<div class=\"row\">\n";
echo "<div class=\"col-md-4\"><b>Overall</b></div>\n";
echo "<div class='col-md-8'><b>$overall</b></div>\n";
echo "</div>";
}
}
?>
</div>
</body>
</html>