Forráskód Böngészése

Minor - Reformatted code to avoid warnings and consider code sniffer

Yannick Warnier 11 éve
szülő
commit
1e993aca8e
2 módosított fájl, 251 hozzáadás és 226 törlés
  1. 46 21
      main/admin/user_import.php
  2. 205 205
      main/inc/lib/classmanager.lib.php

+ 46 - 21
main/admin/user_import.php

@@ -2,7 +2,6 @@
 /* For licensing terms, see /license.txt */
 /**
  * This tool allows platform admins to add users by uploading a CSV or XML file
- * @todo Add some langvars to DLTT
  * @package chamilo.admin
  */
 
@@ -22,7 +21,8 @@ require_once api_get_path(LIBRARY_PATH).'import.lib.php';
 // Set this option to true to enforce strict purification for usenames.
 $purification_option_for_usernames = false;
 
-function validate_data($users) {
+function validate_data($users)
+{
     global $defined_auth_sources;
     $errors = array();
     $usernames = array();
@@ -85,7 +85,8 @@ function validate_data($users) {
 /**
  * Add missing user-information (which isn't required, like password, username etc).
  */
-function complete_missing_data($user) {
+function complete_missing_data($user)
+{
     global $purification_option_for_usernames;
     // 1. Create a username if necessary.
     if (UserManager::is_username_empty($user['UserName'])) {
@@ -110,7 +111,7 @@ function complete_missing_data($user) {
 
 /**
  * Save the imported data
- * @param   array   List of users
+ * @param   array   $users List of users
  * @return  void
  * @uses global variable $inserted_in_course, which returns the list of courses the user was inserted in
  */
@@ -196,7 +197,8 @@ function save_data($users)
  * @param string $file Path to the CSV-file
  * @return array All userinformation read from the file
  */
-function parse_csv_data($file) {
+function parse_csv_data($file)
+{
     $users = Import :: csv_to_array($file);
     foreach ($users as $index => $user) {
         if (isset ($user['Courses'])) {
@@ -208,30 +210,36 @@ function parse_csv_data($file) {
 }
 /**
  * XML-parser: handle start of element
+ * @param   string  $parser Deprecated?
+ * @param   string  $data The data to be parsed
  */
-function element_start($parser, $data) {
+function element_start($parser, $data)
+{
     $data = api_utf8_decode($data);
     global $user;
     global $current_tag;
     switch ($data) {
-        case 'Contact' :
+        case 'Contact':
             $user = array ();
             break;
-        default :
+        default:
             $current_tag = $data;
     }
 }
 
 /**
  * XML-parser: handle end of element
+ * @param   string  $parser Deprecated?
+ * @param   string  $data   The data to be parsed
  */
-function element_end($parser, $data) {
+function element_end($parser, $data)
+{
     $data = api_utf8_decode($data);
     global $user;
     global $users;
     global $current_value;
     switch ($data) {
-        case 'Contact' :
+        case 'Contact':
             if ($user['Status'] == '5') {
                 $user['Status'] = STUDENT;
             }
@@ -240,7 +248,7 @@ function element_end($parser, $data) {
             }
             $users[] = $user;
             break;
-        default :
+        default:
             $user[$data] = $current_value;
             break;
     }
@@ -248,8 +256,12 @@ function element_end($parser, $data) {
 
 /**
  * XML-parser: handle character data
+ * @param   string  $parser Parser (deprecated?)
+ * @param   string  $data The data to be parsed
+ * @return  void
  */
-function character_data($parser, $data) {
+function character_data($parser, $data)
+{
     $data = trim(api_utf8_decode($data));
     global $current_value;
     $current_value = $data;
@@ -258,12 +270,10 @@ function character_data($parser, $data) {
 /**
  * Read the XML-file
  * @param string $file Path to the XML-file
- * @return array All userinformation read from the file
+ * @return array All user information read from the file
  */
-function parse_xml_data($file) {
-    global $current_tag;
-    global $current_value;
-    global $user;
+function parse_xml_data($file)
+{
     global $users;
     $users = array();
     $parser = xml_parser_create('UTF-8');
@@ -280,6 +290,7 @@ api_protect_admin_script(true, null, 'login');
 
 
 $defined_auth_sources[] = PLATFORM_AUTH_SOURCE;
+
 if (is_array($extAuthSource)) {
     $defined_auth_sources = array_merge($defined_auth_sources, array_keys($extAuthSource));
 }
@@ -292,7 +303,7 @@ $extra_fields = UserManager::get_extra_fields(0, 0, 5, 'ASC', true);
 $user_id_error = array();
 $error_message = '';
 
-if ($_POST['formSent'] AND $_FILES['import_file']['size'] !== 0) {
+if ($_POST['formSent'] and $_FILES['import_file']['size'] !== 0) {
     $file_type = $_POST['file_type'];
     Security::clear_token();
     $tok = Security::get_token();
@@ -354,7 +365,9 @@ if ($_POST['formSent'] AND $_FILES['import_file']['size'] !== 0) {
         $warning_message = '<ul>';
         foreach ($errors as $index => $error_user) {
             $warning_message .= '<li><b>'.$error_user['error'].'</b>: ';
-            $warning_message .= '<strong>'.$error_user['UserName'].'</strong>&nbsp;('.api_get_person_name($error_user['FirstName'], $error_user['LastName']).')';
+            $warning_message .=
+                '<strong>'.$error_user['UserName'].'</strong>&nbsp;('.
+                api_get_person_name($error_user['FirstName'], $error_user['LastName']).')';
             $warning_message .= '</li>';
         }
         $warning_message .= '</ul>';
@@ -384,8 +397,20 @@ $form->addElement('header', '', $tool_name);
 $form->addElement('hidden', 'formSent');
 $form->addElement('file', 'import_file', get_lang('ImportFileLocation'));
 $group = array();
-$group[] = $form->createElement('radio', 'file_type', '', 'CSV (<a href="example.csv" target="_blank">'.get_lang('ExampleCSVFile').'</a>)', 'csv');
-$group[] = $form->createElement('radio', 'file_type', null, 'XML (<a href="example.xml" target="_blank">'.get_lang('ExampleXMLFile').'</a>)', 'xml');
+$group[] = $form->createElement(
+    'radio',
+    'file_type',
+    '',
+    'CSV (<a href="example.csv" target="_blank">'.get_lang('ExampleCSVFile').'</a>)',
+    'csv'
+    );
+$group[] = $form->createElement(
+    'radio',
+    'file_type',
+    null,
+    'XML (<a href="example.xml" target="_blank">'.get_lang('ExampleXMLFile').'</a>)',
+    'xml'
+    );
 $form->addGroup($group, '', get_lang('FileType'), '<br/>');
 
 $group = array();

+ 205 - 205
main/inc/lib/classmanager.lib.php

@@ -1,227 +1,227 @@
 <?php
 /* For licensing terms, see /license.txt */
 /**
-* This is the class library for this application.
-* @package	 chamilo.library
+* This is the static class library for this application.
+* @package     chamilo.library
 */
 /**
  * Code
  */
 class ClassManager
 {
-	/**
-	 * Get class information
-	 * note: This function can't be named get_class() because that's a standard
-	 * php-function.
-	 */
-	function get_class_info($class_id) {
+    /**
+     * Get class information
+     * note: This function can't be named get_class() because that's a standard
+     * php-function.
+     */
+    public static function get_class_info($class_id) {
         $class_id = intval($class_id);        
-		$table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
-		$sql = "SELECT * FROM $table_class WHERE id='".$class_id."'";
-		$res = Database::query($sql);
-		return Database::fetch_array($res, 'ASSOC');
-	}
-	/**
-	 * Change the name of a class
-	 * @param string $name The new name
-	 * @param int $class_id The class id
-	 */
-	function set_name($name, $class_id) {
+        $table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
+        $sql = "SELECT * FROM $table_class WHERE id='".$class_id."'";
+        $res = Database::query($sql);
+        return Database::fetch_array($res, 'ASSOC');
+    }
+    /**
+     * Change the name of a class
+     * @param string $name The new name
+     * @param int $class_id The class id
+     */
+    public static function set_name($name, $class_id) {
         $class_id = intval($class_id);        
-		$table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
-		$sql = "UPDATE $table_class SET name='".Database::escape_string($name)."' WHERE id='".$class_id."'";
-		$res = Database::query($sql);
-	}
-	/**
-	 * Create a class
-	 * @param string $name
-	 */
-	function create_class($name) {
-		$table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
-		$sql = "INSERT INTO $table_class SET name='".Database::escape_string($name)."'";
-		Database::query($sql);
-		return Database::affected_rows() == 1;
-	}
-	/**
-	 * Check if a classname is allready in use
-	 * @param string $name
-	 */
-	function class_name_exists($name) {
-		$table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
-		$sql = "SELECT * FROM $table_class WHERE name='".Database::escape_string($name)."'";
-		$res = Database::query($sql);
-		return Database::num_rows($res) != 0;
-	}
-	/**
-	 * Delete a class
-	 * @param int $class_id
-	 * @todo Add option to unsubscribe class-members from the courses where the
-	 * class was subscibed to
-	 */
-	function delete_class($class_id) {
+        $table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
+        $sql = "UPDATE $table_class SET name='".Database::escape_string($name)."' WHERE id='".$class_id."'";
+        $res = Database::query($sql);
+    }
+    /**
+     * Create a class
+     * @param string $name
+     */
+    public static function create_class($name) {
+        $table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
+        $sql = "INSERT INTO $table_class SET name='".Database::escape_string($name)."'";
+        Database::query($sql);
+        return Database::affected_rows() == 1;
+    }
+    /**
+     * Check if a classname is allready in use
+     * @param string $name
+     */
+    public static function class_name_exists($name) {
+        $table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
+        $sql = "SELECT * FROM $table_class WHERE name='".Database::escape_string($name)."'";
+        $res = Database::query($sql);
+        return Database::num_rows($res) != 0;
+    }
+    /**
+     * Delete a class
+     * @param int $class_id
+     * @todo Add option to unsubscribe class-members from the courses where the
+     * class was subscibed to
+     */
+    public static function delete_class($class_id) {
         $class_id = intval($class_id);        
-		$table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
-		$table_class_course = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
-		$table_class_user = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
-		$sql = "DELETE FROM $table_class_user WHERE class_id = '".$class_id."'";
-		Database::query($sql);
-		$sql = "DELETE FROM $table_class_course WHERE class_id = '".$class_id."'";
-		Database::query($sql);
-		$sql = "DELETE FROM $table_class WHERE id = '".$class_id."'";
-		Database::query($sql);
-	}
-	/**
-	 * Get all users from a class
-	 * @param int $class_id
-	 * @return array
-	 */
-	function get_users($class_id) {        
+        $table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
+        $table_class_course = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
+        $table_class_user = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
+        $sql = "DELETE FROM $table_class_user WHERE class_id = '".$class_id."'";
+        Database::query($sql);
+        $sql = "DELETE FROM $table_class_course WHERE class_id = '".$class_id."'";
+        Database::query($sql);
+        $sql = "DELETE FROM $table_class WHERE id = '".$class_id."'";
+        Database::query($sql);
+    }
+    /**
+     * Get all users from a class
+     * @param int $class_id
+     * @return array
+     */
+    public static function get_users($class_id) {
         $class_id = intval($class_id);        
-		$table_class_user = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
-		$table_user = Database :: get_main_table(TABLE_MAIN_USER);
-		$sql = "SELECT * FROM $table_class_user cu, $table_user u WHERE cu.class_id = '".$class_id."' AND cu.user_id = u.user_id";
-		$res = Database::query($sql);
-		$users = array ();
-		while ($user = Database::fetch_array($res, 'ASSOC')) {
-			$users[] = $user;
-		}
-		return $users;
-	}
-	/**
-	 * Add a user to a class. If the class is subscribed to a course, the new
-	 * user will also be subscribed to that course.
-	 * @param int $user_id The user id
-	 * @param int $class_id The class id
-	 */
-	function add_user($user_id, $class_id) {
-		$table_class_user = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
+        $table_class_user = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
+        $table_user = Database :: get_main_table(TABLE_MAIN_USER);
+        $sql = "SELECT * FROM $table_class_user cu, $table_user u WHERE cu.class_id = '".$class_id."' AND cu.user_id = u.user_id";
+        $res = Database::query($sql);
+        $users = array ();
+        while ($user = Database::fetch_array($res, 'ASSOC')) {
+            $users[] = $user;
+        }
+        return $users;
+    }
+    /**
+     * Add a user to a class. If the class is subscribed to a course, the new
+     * user will also be subscribed to that course.
+     * @param int $user_id The user id
+     * @param int $class_id The class id
+     */
+    public static function add_user($user_id, $class_id) {
+        $table_class_user = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
         $user_id  = intval($user_id);
         $class_id = intval($class_id);
-		$sql = "INSERT IGNORE INTO $table_class_user SET user_id = '".$user_id."', class_id='".$class_id."'";
-		Database::query($sql);
-		$courses = ClassManager :: get_courses($class_id);
-		foreach ($courses as $index => $course) {
-			CourseManager :: subscribe_user($user_id, $course['course_code']);
-		}
-	}
-	/**
-	 * Unsubscribe a user from a class. If the class is also subscribed in a
-	 * course, the user will be unsubscribed from that course
-	 * @param int $user_id The user id
-	 * @param int $class_id The class id
-	 */
-	function unsubscribe_user($user_id, $class_id) {
+        $sql = "INSERT IGNORE INTO $table_class_user SET user_id = '".$user_id."', class_id='".$class_id."'";
+        Database::query($sql);
+        $courses = ClassManager :: get_courses($class_id);
+        foreach ($courses as $index => $course) {
+            CourseManager :: subscribe_user($user_id, $course['course_code']);
+        }
+    }
+    /**
+     * Unsubscribe a user from a class. If the class is also subscribed in a
+     * course, the user will be unsubscribed from that course
+     * @param int $user_id The user id
+     * @param int $class_id The class id
+     */
+    public static function unsubscribe_user($user_id, $class_id) {
         $class_id = intval($class_id);        
         $user_id  = intval($user_id);
         
-		$table_class_user = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
-		$table_course_class = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
-		$courses = ClassManager :: get_courses($class_id);
-		if (count($courses) != 0) {
-			$course_codes = array ();
-			foreach ($courses as $index => $course) {
-				$course_codes[] = $course['course_code'];
-				$sql = "SELECT DISTINCT user_id FROM $table_class_user t1, $table_course_class t2 WHERE t1.class_id=t2.class_id AND course_code = '".$course['course_code']."' AND user_id = $user_id AND t2.class_id<>'$class_id'";
-				$res = Database::query($sql);
-				if (Database::num_rows($res) == 0 && CourseManager :: get_user_in_course_status($user_id, $course['course_code']) == STUDENT)
-				{
-					CourseManager :: unsubscribe_user($user_id, $course['course_code']);
-				}
-			}
-		}
-		$sql = "DELETE FROM $table_class_user WHERE user_id='".$user_id."' AND class_id = '".$class_id."'";
-		Database::query($sql);
-	}
-	/**
-	 * Get all courses in which a class is subscribed
-	 * @param int $class_id
-	 * @return array
-	 */
-	function get_courses($class_id) {
+        $table_class_user = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
+        $table_course_class = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
+        $courses = ClassManager :: get_courses($class_id);
+        if (count($courses) != 0) {
+            $course_codes = array ();
+            foreach ($courses as $index => $course) {
+                $course_codes[] = $course['course_code'];
+                $sql = "SELECT DISTINCT user_id FROM $table_class_user t1, $table_course_class t2 WHERE t1.class_id=t2.class_id AND course_code = '".$course['course_code']."' AND user_id = $user_id AND t2.class_id<>'$class_id'";
+                $res = Database::query($sql);
+                if (Database::num_rows($res) == 0 && CourseManager :: get_user_in_course_status($user_id, $course['course_code']) == STUDENT)
+                {
+                    CourseManager :: unsubscribe_user($user_id, $course['course_code']);
+                }
+            }
+        }
+        $sql = "DELETE FROM $table_class_user WHERE user_id='".$user_id."' AND class_id = '".$class_id."'";
+        Database::query($sql);
+    }
+    /**
+     * Get all courses in which a class is subscribed
+     * @param int $class_id
+     * @return array
+     */
+    public static function get_courses($class_id) {
         $class_id = intval($class_id);       
-		$table_class_course = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
-		$table_course = Database :: get_main_table(TABLE_MAIN_COURSE);
-		$sql = "SELECT * FROM $table_class_course cc, $table_course c WHERE cc.class_id = '".$class_id."' AND cc.course_code = c.code";
-		$res = Database::query($sql);
-		$courses = array ();
-		while ($course = Database::fetch_array($res, 'ASSOC')) {
-			$courses[] = $course;
-		}
-		return $courses;
-	}
-	/**
-	 * Subscribe all members of a class to a course
-	 * @param  int $class_id The class id
-	 * @param string $course_code The course code
-	 */
-	function subscribe_to_course($class_id, $course_code) {
-		$tbl_course_class = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
-		$tbl_class_user = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
-		$tbl_course_user = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
-		$sql = "INSERT IGNORE INTO $tbl_course_class SET course_code = '".Database::escape_string($course_code)."', class_id = '".Database::escape_string($class_id)."'";
-		Database::query($sql);
-		$sql = "SELECT user_id FROM $tbl_class_user WHERE class_id = '".Database::escape_string($class_id)."'";
-		$res = Database::query($sql);
-		while ($user = Database::fetch_object($res)) {
-			CourseManager :: subscribe_user($user->user_id, $course_code);
-		}
-	}
-	/**
-	 * Unsubscribe a class from a course.
-	 * Only students are unsubscribed. If a user is member of 2 classes which
-	 * are both subscribed to the course, the user stays in the course.
-	 * @param int $class_id The class id
-	 * @param string $course_code The course code
-	 */
-	function unsubscribe_from_course($class_id, $course_code)
-	{
-		$tbl_course_class = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
-		$tbl_class_user = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
-		$sql = "SELECT cu.user_id,COUNT(cc.class_id) FROM $tbl_course_class cc, $tbl_class_user cu WHERE  cc.class_id = cu.class_id AND cc.course_code = '".Database::escape_string($course_code)."' GROUP BY cu.user_id HAVING COUNT(cc.class_id) = 1";
-		$single_class_users = Database::query($sql);
-		while ($single_class_user = Database::fetch_object($single_class_users))
-		{
-			$sql = "SELECT * FROM $tbl_class_user WHERE class_id = '".Database::escape_string($class_id)."' AND user_id = '".Database::escape_string($single_class_user->user_id)."'";
-			$res = Database::query($sql);
-			if (Database::num_rows($res) > 0)
-			{
-				if (CourseManager :: get_user_in_course_status($single_class_user->user_id, $course_code) == STUDENT)
-				{
-					CourseManager :: unsubscribe_user($single_class_user->user_id, $course_code);
-				}
-			}
-		}
-		$sql = "DELETE FROM $tbl_course_class WHERE course_code = '".Database::escape_string($course_code)."' AND class_id = '".Database::escape_string($class_id)."'";
-		Database::query($sql);
-	}
+        $table_class_course = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
+        $table_course = Database :: get_main_table(TABLE_MAIN_COURSE);
+        $sql = "SELECT * FROM $table_class_course cc, $table_course c WHERE cc.class_id = '".$class_id."' AND cc.course_code = c.code";
+        $res = Database::query($sql);
+        $courses = array ();
+        while ($course = Database::fetch_array($res, 'ASSOC')) {
+            $courses[] = $course;
+        }
+        return $courses;
+    }
+    /**
+     * Subscribe all members of a class to a course
+     * @param  int $class_id The class id
+     * @param string $course_code The course code
+     */
+    public static function subscribe_to_course($class_id, $course_code) {
+        $tbl_course_class = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
+        $tbl_class_user = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
+        $tbl_course_user = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
+        $sql = "INSERT IGNORE INTO $tbl_course_class SET course_code = '".Database::escape_string($course_code)."', class_id = '".Database::escape_string($class_id)."'";
+        Database::query($sql);
+        $sql = "SELECT user_id FROM $tbl_class_user WHERE class_id = '".Database::escape_string($class_id)."'";
+        $res = Database::query($sql);
+        while ($user = Database::fetch_object($res)) {
+            CourseManager :: subscribe_user($user->user_id, $course_code);
+        }
+    }
+    /**
+     * Unsubscribe a class from a course.
+     * Only students are unsubscribed. If a user is member of 2 classes which
+     * are both subscribed to the course, the user stays in the course.
+     * @param int $class_id The class id
+     * @param string $course_code The course code
+     */
+    public static function unsubscribe_from_course($class_id, $course_code)
+    {
+        $tbl_course_class = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
+        $tbl_class_user = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
+        $sql = "SELECT cu.user_id,COUNT(cc.class_id) FROM $tbl_course_class cc, $tbl_class_user cu WHERE  cc.class_id = cu.class_id AND cc.course_code = '".Database::escape_string($course_code)."' GROUP BY cu.user_id HAVING COUNT(cc.class_id) = 1";
+        $single_class_users = Database::query($sql);
+        while ($single_class_user = Database::fetch_object($single_class_users))
+        {
+            $sql = "SELECT * FROM $tbl_class_user WHERE class_id = '".Database::escape_string($class_id)."' AND user_id = '".Database::escape_string($single_class_user->user_id)."'";
+            $res = Database::query($sql);
+            if (Database::num_rows($res) > 0)
+            {
+                if (CourseManager :: get_user_in_course_status($single_class_user->user_id, $course_code) == STUDENT)
+                {
+                    CourseManager :: unsubscribe_user($single_class_user->user_id, $course_code);
+                }
+            }
+        }
+        $sql = "DELETE FROM $tbl_course_class WHERE course_code = '".Database::escape_string($course_code)."' AND class_id = '".Database::escape_string($class_id)."'";
+        Database::query($sql);
+    }
 
-	/**
-	 * Get the class-id
-	 * @param string $name The class name
-	 * @return int the ID of the class
-	 */
-	function get_class_id($name) {
+    /**
+     * Get the class-id
+     * @param string $name The class name
+     * @return int the ID of the class
+     */
+    public static function get_class_id($name) {
         $name = Database::escape_string($name);
-		$table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
-		$sql = "SELECT * FROM $table_class WHERE name='".$name."'";
-		$res = Database::query($sql);
-		$obj = Database::fetch_object($res);
-		return $obj->id;
-	}
-	/**
-	 * Get all classes subscribed in a course
-	 * @param string $course_code
-	 * @return array An array with all classes (keys: 'id','code','name')
-	 */
-	function get_classes_in_course($course_code) {
-		$table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
-		$table_course_class = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
-		$sql = "SELECT cl.* FROM $table_class cl, $table_course_class cc WHERE cc.course_code = '".Database::escape_string($course_code)."' AND cc.class_id = cl.id";
-		$res = Database::query($sql);
-		$classes = array ();
-		while ($class = Database::fetch_array($res, 'ASSOC')) {
-			$classes[] = $class;
-		}
-		return $classes;
-	}
+        $table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
+        $sql = "SELECT * FROM $table_class WHERE name='".$name."'";
+        $res = Database::query($sql);
+        $obj = Database::fetch_object($res);
+        return $obj->id;
+    }
+    /**
+     * Get all classes subscribed in a course
+     * @param string $course_code
+     * @return array An array with all classes (keys: 'id','code','name')
+     */
+    public static function get_classes_in_course($course_code) {
+        $table_class = Database :: get_main_table(TABLE_MAIN_CLASS);
+        $table_course_class = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
+        $sql = "SELECT cl.* FROM $table_class cl, $table_course_class cc WHERE cc.course_code = '".Database::escape_string($course_code)."' AND cc.class_id = cl.id";
+        $res = Database::query($sql);
+        $classes = array ();
+        while ($class = Database::fetch_array($res, 'ASSOC')) {
+            $classes[] = $class;
+        }
+        return $classes;
+    }
 }