Delete existing jobs on editting experiments + disable form

application/controllers/experiments.php

@@ -157,18 +157,28 @@ class Experiments extends MY_Controller {
 			show_404();
 		}
 
-		$this->load->helper('typography');
+		$job = $this->job->getByExperimentId($experiment['id']);
 	
 		// update parameters
 		foreach ($_POST as $key => $value) {
 			if (preg_match('/^param-[0-9a-z]+/', $key)) {
-				$this->experiment->updateParameter($this->input->post($key), $experiment['id'], substr($key, 6, 16));
+				$result = $this->experiment->updateParameter($this->input->post($key), $experiment['id'], substr($key, 6, 16));
 			}
 		}
 
+		// delete existing jobs
+		if (isset($result) && $result === true) {
+			if (isset($job['id'])) {
+				$this->job->delete($job['id']);
+			}
+			redirect('experiments/detail/' . $experiment['id'], 303);
+		}
+
+		$this->load->helper('typography');
+
 		$data['experiment'] = $experiment;
 		$data['parameters'] = $this->experiment->getParameters($experiment['id']);
-		$data['job'] = $this->job->getByExperimentId($experiment['id']);
+		$data['job'] = $job;
 		$data['project'] = $this->project->getById($experiment['project_id']);
 
 		$this->load->view('experiments/detail', $data);

application/models/experiment.php

@@ -127,7 +127,7 @@ class Experiment extends CI_Model {
 			$this->db->delete('experiments_parameters');
 		}
 
-		return $this->db->affected_rows() > 0;
+		return true;
 	}
 
 	/**

application/views/experiments/detail.php

@@ -15,10 +15,12 @@
 		<p>
 <?php
 	if (isset($job['id'])):
+		$disabled = ($job['started_at'] != '0000-00-00 00:00:00') ? true : false;
 ?>
 			<a class="button disabled job_start"><?=_('Start job');?></a>
 <?php
 	else:
+		$disabled = false
 ?>
 			<a href="<?=site_url('jobs/start/' . $experiment['id']);?>" class="button job_start"><?=_('Start job');?></a>
 <?php
@@ -31,7 +33,13 @@
 	</div>
 
 	<div class="box">
+<?php 
+	if (!$disabled):
+?>
 		<form name="editExperiment" method="post" action="<?=site_url('experiments/detail/' . $experiment['id']);?>">
+<?php
+	endif;
+?>
 			<h3><?=_('Configuration');?></h3>
 			<table class="tableList">
 				<thead>
@@ -48,7 +56,7 @@
 					<tr>
 						<td width="40%"><?=$param['readable'];?></td>
 						<td width="41%">
-							<input type="text" name="param-<?=$param['parameter_id'];?>" class="long text" value="<?=(!empty($_POST['param-' . $param['parameter_id']]) ? $this->input->post('param-' . $param['parameter_id']) : $param['value']);?>" />
+							<input type="text" name="param-<?=$param['parameter_id'];?>" class="long text" value="<?=(!empty($_POST['param-' . $param['parameter_id']]) ? $this->input->post('param-' . $param['parameter_id']) : $param['value']);?>"<?=($disabled) ? ' disabled="disabled"' : '';?> />
 <?php
 		if (!empty($param['description'])):
 ?>
@@ -67,10 +75,25 @@
 ?>
 				</tbody>
 			</table>
+<?php 
+	if ($disabled):
+?>
+			<p>
+				<a class="button save disabled"><?=_('Save changes');?></a>
+			<p>
+<?php
+	else:
+?>
+			<p>
+				<strong><?=_('Note');?>:</strong> <?=_('The existing job will be deleted.');?>
+			</p>
 			<p>
 				<a href="javascript:void(0);" onclick="$('form[name=editExperiment]').submit();" class="button save"><?=_('Save changes');?></a>
 			</p>
 		</form>
+<?php
+	endif;
+?>
 	</div>
 
 <?php
@@ -79,7 +102,7 @@
 	<div class="box">
 		<h3><?=_('Job details');?></h3>
 		<p>
-			<strong><?=_('Date started');?>:</strong> <?=relative_time($job['started_at']);?><br />
+			<strong><?=_('Date started');?>:</strong> <?=relative_time($job['created_at']);?><br />
 			<strong><?=_('Starter');?>:</strong> <?=anchor('users/profile/' . urldecode($job['username']), $job['firstname'] . ' ' . $job['lastname']);?><br />
 			<strong><?=_('Server');?>:</strong> <?=(!empty($job['server'])) ? anchor('admin/servers/detail/' . urldecode($job['server']), $job['server']) : _('Not yet picked');?>