We can now chose to only see useful steps. Issue #14 done.

libs/problems.php

@@ -93,7 +93,9 @@ function displayProblem($id, PDO $db) {
 			$i = 0;
 			foreach($steps as $step) {
 				$i += 1;
-				viewStep($step['action'], $step['reaction'], $step['useful'], $i, $step['id']);
+				//We check if user wants to see all steps or only useful ones.
+				if ((isset($_GET['onlyUseful']) && $step['useful']) || (!isset($_GET['onlyUseful'])))
+					viewStep($step['action'], $step['reaction'], $step['useful'], $i, $step['id']);
 			}
 			//The "add step" button
 			viewAddStepButton($id);

style.css

@@ -263,3 +263,8 @@ p {
 	margin: 0px;
 	margin-left: 2px;
 }
+
+.toggleText {
+	font-size: 0.7em;
+	text-align: right;
+}

views/problems.php

@@ -98,6 +98,20 @@ function viewProblem($title, $symptoms, $solved, $date, $category_title, array $
 			<td id="dateProblem">Last update: <strong><?php echo $date;?></strong></td>
 			<td id="catProblem">In category: <strong><?php echo $category_title;?></strong></td>
 		</tr></table>
+	<?php
+		//Toggle into the mode which allow only to show useful steps and it which allow all steps.
+		if (isset($_GET['onlyUseful'])) {
+			$toggleText = "Show all steps for this problem.";
+			$toggleLink = NULL;
+		}
+		else {
+			$toggleText = "Show only useful steps for this problem.";
+			$toggleLink = "&amp;onlyUseful";
+		}
+	?>
+		<div class="toggleText">
+			<a href="index.php?type=viewPb&amp;pb=<?php echo $id.$toggleLink ?>"><?php echo $toggleText ?></a>
+		</div>
 		<p>
 			<?php echo decodeVar($symptoms); ?>
 		</p>