First cut at AdminInstitutions. Doesn't allow deleting at this point.

htdocs/admin/institutions.php

+<?php
+/**
+ * This program is part of Mahara
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ *
+ * @package    mahara
+ * @subpackage admin
+ * @author     Nigel McNie <nigel@catalyst.net.nz>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL
+ * @copyright  (C) 2006,2007 Catalyst IT Ltd http://catalyst.net.nz
+ *
+ */
+
+define('INTERNAL', 1);
+define('ADMIN', 1);
+define('MENUITEM', 'institutions');
+require(dirname(dirname(__FILE__)) . '/init.php');
+require_once('pieforms/pieform.php');
+$smarty = smarty();
+
+$institution = param_variable('i', '');
+$add         = param_boolean('add');
+
+if ($institution || $add) {
+
+    if (!$add) {
+        $data = get_record('institution', 'name', $institution);
+        $lockedprofilefields = (array) get_rows('institution_locked_profile_field', 'name', $institution);
+        $lockedprofilefields = array_map(create_function('$a', 'return $a[\'profilefield\'];'), $lockedprofilefields);
+    }
+    else {
+        $data = new StdClass;
+        $data->displayname = '';
+        $data->registerallowed = 1;
+        $data->defaultaccountlifetime = null;
+        $data->defaultaccountinactiveexpire = null;
+        $data->defaultaccountinactivewarn = 604800; // 1 week
+        $lockedprofilefields = array();
+        $smarty->assign('add', true);
+    }
+    
+    safe_require('artefact', 'internal');
+    $elements = array();
+
+    if ($add) {
+        $elements['name'] = array(
+            'type' => 'text',
+            'title' => get_string('institutionname'),
+            'rules' => array(
+                'required'  => true,
+                'maxlength' => 255,
+                'regex'     => '/^[a-z]+$/'
+            )
+        );
+        $elements['add'] = array(
+            'type'  => 'hidden',
+            'value' => true
+        );
+    }
+    else {
+        $elements['i'] = array(
+            'type'  => 'hidden',
+            'value' => $institution
+        );
+    }
+
+    $elements['displayname'] = array(
+        'type' => 'text',
+        'title' => get_string('institutiondisplayname'),
+        'defaultvalue' => $data->displayname,
+        'rules' => array(
+            'required'  => true,
+            'maxlength' => 255
+        )
+    );
+    $elements['authplugin'] = array(
+        'type'    => 'select',
+        'title'   => get_string('authplugin'),
+        'options' => get_records_menu('auth_installed', '', '', 'name', 'name, name')
+    );
+    $elements['registerallowed'] = array(
+        'type'         => 'checkbox',
+        'title'        => get_string('registrationallowed'),
+        'description'  => get_string('registrationalloweddescription'),
+        'checked' => $data->registerallowed
+    );
+    $elements['defaultaccountlifetime'] = array(
+        'type'         => 'expiry',
+        'title'        => get_string('defaultaccountlifetime'),
+        'description'  => get_string('defaultaccountlifetimedescription'),
+        'defaultvalue' => $data->defaultaccountlifetime
+    );
+    $elements['defaultaccountinactiveexpire'] = array(
+        'type'         => 'expiry',
+        'title'        => get_string('defaultaccountinactiveexpire'),
+        'description'  => get_string('defaultaccountinactiveexpiredescription'),
+        'defaultvalue' => $data->defaultaccountinactiveexpire
+    );
+    $elements['defaultaccountinactivewarn'] = array(
+        'type' => 'expiry',
+        'title' => get_string('defaultaccountinactivewarn'),
+        'description' => get_string('defaultaccountinactivewarndescription'),
+        'defaultvalue' => $data->defaultaccountinactivewarn
+    );
+
+    $elements['lockedfields'] = array(
+        'value' => '<tr><th colspan="2">Locked fields</th></tr>'
+    ); 
+    foreach (ArtefactTypeProfile::get_all_fields() as $field => $type) {
+        $elements[$field] = array(
+            'type' => 'checkbox',
+            'title' => get_string($field),
+            'checked' => in_array($field, $lockedprofilefields)
+        );
+    }
+    $elements['submit'] = array(
+        'type' => 'submitcancel',
+        'value' => array(get_string('submit'), get_string('cancel'))
+    );
+
+    $smarty->assign('institution_form', pieform(array(
+        'name'     => 'institution',
+        'elements' => $elements
+    )));
+
+}
+else {
+    // Get a list of institutions
+    $institutions = get_records_sql('SELECT i.name, i.displayname, i.authplugin, i.registerallowed, COUNT(u.*)
+        FROM institution i
+        LEFT OUTER JOIN usr u ON (u.institution = i.name)
+        GROUP BY 1, 2, 3, 4
+        ORDER BY i.name', array());
+    $smarty->assign('institutions', $institutions);
+}
+
+function institution_submit($values) {
+    global $SESSION, $institution, $add;
+
+    log_debug($values);
+    db_begin();
+    // Update the basic institution record...
+    $newinstitution = new StdClass;
+    if ($add) {
+        $institution = $newinstitution->name = $values['name'];
+    }
+
+    $newinstitution->displayname                  = $values['displayname'];
+    $newinstitution->authplugin                   = $values['authplugin'];
+    $newinstitution->registerallowed              = ($values['registerallowed']) ? 1 : 0;
+    $newinstitution->defaultaccountlifetime       = ($values['defaultaccountlifetime']) ? intval($values['defaultaccountlifetime']) : null;
+    $newinstitution->defaultaccountinactiveexpire = ($values['defaultaccountinactiveexpire']) ? intval($values['defaultaccountinactiveexpire']) : null;
+    $newinstitution->defaultaccountinactivewarn   = ($values['defaultaccountinactivewarn']) ? intval($values['defaultaccountinactivewarn']) : null;
+    log_debug($newinstitution);
+
+    if ($add) {
+        insert_record('institution', $newinstitution);
+    }
+    else { 
+        $where = new StdClass;
+        $where->name = $institution;
+        update_record('institution', $newinstitution, $where);
+    }
+
+    delete_records('institution_locked_profile_field', 'name', $institution);
+    foreach (ArtefactTypeProfile::get_all_fields() as $field => $type) {
+        if ($values[$field]) {
+            $profilefield = new StdClass;
+            $profilefield->name         = $institution;
+            $profilefield->profilefield = $field;
+            insert_record('institution_locked_profile_field', $profilefield);
+        }
+    }
+    db_commit();
+
+    $SESSION->add_ok_msg(get_string('institutionupdatedsuccessfully'));
+    redirect(get_config('wwwroot') . 'admin/institutions.php');
+}
+
+function institution_cancel_submit() {
+    redirect(get_config('wwwroot') . 'admin/institutions.php');
+}
+
+$smarty->display('admin/institutions.tpl');
+
+?>