silverstripe-framework/admin/code/CMSProfileController.php

<?php
class CMSProfileController extends LeftAndMain {

	private static $url_segment = 'myprofile';

	private static $menu_title = 'My Profile';

	private static $required_permission_codes = false;
	private static $tree_class = 'Member';

	public function getResponseNegotiator() {
		$neg = parent::getResponseNegotiator();
		$controller = $this;
		$neg->setCallback('CurrentForm', function() use(&$controller) {
			return $controller->renderWith($controller->getTemplatesWithSuffix('_Content'));
		});
		return $neg;
	}

	public function getEditForm($id = null, $fields = null) {
		$this->setCurrentPageID(Member::currentUserID());

		$form = parent::getEditForm($id, $fields);
		if($form instanceof SS_HTTPResponse) return $form;
		
		$form->Fields()->removeByName('LastVisited');
		$form->Fields()->push(new HiddenField('ID', null, Member::currentUserID()));
		$form->Actions()->push(
			FormAction::create('save',_t('CMSMain.SAVE', 'Save'))
				->addExtraClass('ss-ui-button ss-ui-action-constructive')
				->setAttribute('data-icon', 'accept')
				->setUseButtonTag(true)
		);
		$form->Actions()->removeByName('action_delete');
		$form->setValidator(new Member_Validator());
		$form->setTemplate('Form');
		$form->setAttribute('data-pjax-fragment', null);
		if($form->Fields()->hasTabset()) $form->Fields()->findOrMakeTab('Root')->setTemplate('CMSTabSet');
		$form->addExtraClass('member-profile-form root-form cms-edit-form cms-panel-padded center');
		
		return $form;
	}

	public function canView($member = null) {
		if(!$member && $member !== FALSE) $member = Member::currentUser();
		
		// cms menus only for logged-in members
		if(!$member) return false;
		
		// Only check for generic CMS permissions
		if(
			!Permission::checkMember($member, "CMS_ACCESS_LeftAndMain")
			&& !Permission::checkMember($member, "CMS_ACCESS_CMSMain")
		) {
			return false;
		}
		
		return true;
	}

	public function save($data, $form) {
		$member = DataObject::get_by_id("Member", $data['ID']);
		if(!$member) return $this->httpError(404);
		$origLocale = $member->Locale;

		if(!$member->canEdit()) {
			$form->sessionMessage(_t('Member.CANTEDIT', 'You don\'t have permission to do that'), 'bad');
			return $this->redirectBack();
		}

		$response = parent::save($data, $form);

		if($origLocale != $data['Locale']) {
			$response->addHeader('X-Reload', true);
			$response->addHeader('X-ControllerURL', $this->Link());
		}
		
		return $response;
	}

	/**
	 * Only show first element, as the profile form is limited to editing
	 * the current member it doesn't make much sense to show the member name
	 * in the breadcrumbs.
	 */
	public function Breadcrumbs($unlinked = false) {
		$items = parent::Breadcrumbs($unlinked);
		return new ArrayList(array($items[0]));
	}

}