Implement CSV file upload for creating parameters

application/controllers/admin/parameters.php

@@ -76,6 +76,54 @@ class Parameters extends Admin_Controller {
 		$this->load->view('admin/parameters/create', $data);
 	}
 
+	/**
+	 * Allows admins to upload a CSV file to create a bunch of parameters.
+	 *
+	 * @param string $programId
+	 */
+	public function upload_csv($programId = '') {
+		$program = $this->program->getByID($programId);
+
+		if (empty($programId) || !isset($program['id'])) {
+			show_404();
+		}
+
+		if (count($_FILES) > 0) {
+			if ($_FILES['csv_file']['type'] == 'text/csv') {
+				$row = 1;
+				$inserted = 0;
+				$handler = fopen($_FILES['csv_file']['tmp_name'], "r");
+
+				while (($parameter = fgetcsv($handler, 1000, ',')) !== false) {
+					if ($row > 1) {
+						$data = array(
+							'program_id' => $program['id'],
+							'name' => $parameter[0],
+							'readable' => $parameter[1],
+							'unit' => $parameter[2],
+							'type' => $parameter[3],
+							'default_value' => $parameter[4],
+							'description' => $parameter[5],
+						);
+
+						if ($this->parameter->create($data)) {
+							$inserted++;
+						}
+					}
+					$row++;
+				}
+
+				if ($inserted > 0) {
+					$this->messages->add(sprintf(_('%s parameters were successfully created.'), $inserted), 'success');
+				}
+			} else {
+				$this->messages->add(_('No CSV file specified.'), 'error');
+			}
+		}
+
+		redirect('admin/programs/edit/' . $program['id'], 303);
+	}
+
 	/**
 	 * Allows admins to edit a parameter.
 	 *

application/views/admin/programs/edit.php

@@ -20,7 +20,7 @@ $(document).ready(function() {
 	</div>
 
 	<div class="box">
-		<form name="createUser" method="post" action="<?=site_url('admin/programs/edit/' . $program['id'])?>">
+		<form name="editProgram" method="post" action="<?=site_url('admin/programs/edit/' . $program['id'])?>">
 			<h3><?=_('Required information');?></h3>
 			<ul>
 				<li>
@@ -33,9 +33,10 @@ $(document).ready(function() {
 				</li>
 			</ul>
 			<p>
-				<a class="button save" href="javascript:void(0);" onclick="$('form[name=createUser]').submit();"><?=_('Save');?></a>
+				<a class="button save" href="javascript:void(0);" onclick="$('form[name=editProgram]').submit();"><?=_('Save');?></a>
 				<a class="button cancel" href="<?=site_url('admin/programs');?>"><?=_('Cancel');?></a>
 			</p>
+		</form>
 
 		<h3><?=_('Parameters');?></h3>
 		<table class="tableList sortable" id="parameters">
@@ -67,7 +68,21 @@ $(document).ready(function() {
 		<p>
 			<a class="button add" href="<?=site_url('admin/parameters/create/' . $program['id']);?>"><?=_('Add new parameter');?></a>
 		</p>
-		</form>
+
+		<form name="uploadCSV" method="post" action="<?=site_url('admin/parameters/upload_csv/' . $program['id'])?>" enctype="multipart/form-data">
+		<ul>
+			<li>
+				<?=form_label(_('CVS file'), 'csv_file');?>
+				<div>
+					<input type="file" name="csv_file" id="csv_file" class="file" />
+					<?=form_error('csv_file')?>
+				</div>
+				<label class="note">You can upload a CVS file, containing a bunch of parameters. The rows of the file must be in the following format: <em>parameter name, human-readable name, unit, type, default value, description</em>. The first row is reserved for headlines.</label>
+			</li>
+		</ul>
+		<p>
+			<a class="button upload" href="javascript:void(0);" onclick="$('form[name=uploadCSV]').submit();"><?=_('Upload');?></a>
+		</p>
 	</div>
 </div>
 

assets/css/style.css

@@ -423,6 +423,11 @@ a.save {
     padding-left: 30px;
 }
 
+a.upload {
+    background: url(../images/icons/drive-upload.png) 10px center no-repeat #f3f3f3;
+    padding-left: 30px;
+}
+
 a.add {
     background: url(../images/icons/plus-circle.png) 10px center no-repeat #f3f3f3;
     padding-left: 30px;