From 2903b367f150c9fc722836e766faf88788ecc581 Mon Sep 17 00:00:00 2001
From: Eike Foken <kontakt@eikefoken.de>
Date: Thu, 18 Aug 2011 04:15:06 +0200
Subject: [PATCH] Add new model for program parameters

---
 application/controllers/ajax.php |   8 +-
 application/models/parameter.php | 140 +++++++++++++++++++++++++++++++
 2 files changed, 143 insertions(+), 5 deletions(-)
 create mode 100644 application/models/parameter.php

diff --git a/application/controllers/ajax.php b/application/controllers/ajax.php
index fdbe9bd..c89a3d3 100644
--- a/application/controllers/ajax.php
+++ b/application/controllers/ajax.php
@@ -58,12 +58,10 @@ class Ajax extends CI_Controller {
 
 	/**
 	 * Sorts a programs parameters.
-	 *
-	 * @param string $id
 	 */
-	public function sort_parameters($programId) {
-		$this->load->model('program');
-		$this->program->sortParameters($this->input->post('parameters'), $programId);
+	public function sort_parameters() {
+		$this->load->model('parameter');
+		$this->parameter->sort($this->input->post('parameters'));
 	}
 
 }
\ No newline at end of file
diff --git a/application/models/parameter.php b/application/models/parameter.php
new file mode 100644
index 0000000..ac519c9
--- /dev/null
+++ b/application/models/parameter.php
@@ -0,0 +1,140 @@
+<?php
+/*
+ * Copyright (c) 2011 Eike Foken <kontakt@eikefoken.de>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Model for parameters.
+ *
+ * Each program has many parameters used for configuration of trials.
+ *
+ * @author Eike Foken <kontakt@eikefoken.de>
+ */
+class Parameter extends CI_Model {
+
+	/**
+	 * Contains the possible types for parameters.
+	 *
+	 * @var array
+	 */
+	private $availableTypes = array('boolean', 'integer', 'float', 'string', 'array');
+
+	/**
+	 * Calls the parent constructor.
+	 */
+	public function __construct() {
+		parent::__construct();
+	}
+
+	/**
+	 * Gets all available parameters for a program.
+	 *
+	 * @param string $programId
+	 * @return array
+	 */
+	public function getAll($programId) {
+		return $this->db->order_by('sort_number ASC')
+			->get_where('parameters', array('program_id' => $programId))->result_array();
+	}
+
+	/**
+	 * Gets a specific parameter.
+	 *
+	 * @param string $id
+	 */
+	public function getById($id) {
+		return $this->db->get_where('parameters', array('id' => $id))->row_array();
+	}
+
+	/**
+	 * Gets the possible parameter types.
+	 */
+	public function getTypes() {
+		return $this->availableTypes;
+	}
+
+	/**
+	 * Creates a new parameter.
+	 *
+	 * @param array $data
+	 * @return mixed Returns the ID of the created parameter, or FALSE if
+	 *                the insert was unsuccessful.
+	 */
+	public function create($data) {
+		$this->load->helper('hash');
+
+		if (!isset($data['program_id'])) {
+			return false;
+		}
+
+		do { // generate unique hash
+			$data['id'] = random_hash('16');
+		} while ($this->db->where('id', $data['id'])->from('parameters')->count_all_results() > 0);
+
+		// put new parameter to the end
+		$data['sort_number'] = $this->db->select_max('sort_number')
+			->get_where('parameters', array('program_id' => $data['program_id']))
+			->row()->sort_number + 1;
+
+		$this->db->insert('parameters', $data);
+		return $this->db->affected_rows() > 0 ? $data['id'] : false;
+	}
+
+	/**
+	 * Updates a parameter.
+	 *
+	 * @param array $data
+	 * @param string $id
+	 * @return boolean Returns TRUE if the update was successful.
+	 */
+	public function update($data, $id) {
+		$this->db->update('parameters', $data, array('id' => $id));
+		return $this->db->affected_rows() == 1;
+	}
+
+	/**
+	 * Deletes a specified parameter.
+	 *
+	 * @param string $id
+	 * @return boolean Returns TRUE if the deletion was successful.
+	 */
+	public function delete($id) {
+		$this->db->delete('parameters', array('id' => $id));
+		return $this->db->affected_rows() == 1;
+	}
+
+	/**
+	 * Saves the order of an array of parameters.
+	 *
+	 * @param array $parameters
+	 * @return boolean Returns TRUE if the new order was successfully saved.
+	 */
+	public function sort($parameters) {
+		foreach ($parameters as $number => $id) {
+			$this->db->update('parameters', array('sort_number' => $number), array('id' => $id));
+		}
+
+		return $this->db->affected_rows() > 0;
+	}
+}
+
+/* End of file parameter.php */
+/* Location: ./application/models/parameter.php */