Hi,

I have a gallery module that i want decorate sitetree with so that all my pages have the photo gallery function in them (i.e blog, product page...they all must have the gallery module)

As i see it, this comprises of a 2 part solution.
1) GalleryPage extends DataExtension....this modifies the CMS etc. [b} I have this working already [/b}
2) GalleryPage_Controller extends Extension (and in my config file i add in Object::add_extension('ContentController', 'GalleryPage_Controller'); [b} This is not currently working and this is where i need help [/b}

Herewith the code i am currently using:
My _config.php file

 
// Extend the page class
SiteTree::add_extension('GalleryPage');
Object::add_extension('ContentController', 'GalleryPage_Controller');

My GalleryPage.php file

 
class GalleryPage extends DataExtension {
	
	private static $db = array(
	'GalFolder' => 'Varchar(100)'
	);
	
	private static $has_one = array(
	);
	
	// One gallery page has many gallery images
	private static $has_many = array(
    'GalleryImages' => 'GalleryImage'
  	);

	
	// Set Permissions
	function canEdit($Member = null){if(permission::check('EDIT_GALLERY')){return true;}else{return false;}}
	function canCreate($Member = null){if(permission::check('EDIT_GALLERY')){return true;}else{return false;}}

	// Get existing CMS Fields
	public function getCMSFields() {
   	$this->extend('updateCMSFields', $fields);
 	return $fields;
	}

	// Update CMS with new fields
	public function updateCMSFields(FieldList $fields) {
	$gridFieldConfig = GridFieldConfig_RecordEditor::create(); 
	$gridFieldConfig->addComponent(new GridFieldBulkUpload());
	$gridFieldConfig->addComponent(new GridFieldBulkManager());	
	
	// Creates field where you can type in the folder name --- IT WILL CREATE IN ROOT OF ASSET DIRECTORY!!!
	$fields->addFieldToTab("Root.ImageGallery", new TextField('GalFolder','Folder name')
	);
		
	// Used to determine upload folder
	if($this->owner->GalFolder!='' || $this->owner->GalFolder!=NULL) {
	// Specify the upload folder 
	$uploadfoldername = $this->owner->GalFolder;
	$gridFieldConfig->getComponentByType('GridFieldBulkUpload')
	->setUfSetup('setFolderName', $uploadfoldername)
	->setUfConfig('sequentialUploads', true);
	}
	else {
	$gridFieldConfig->getComponentByType('GridFieldBulkUpload')
	->setUfSetup('setFolderName', 'Gallery-Images')
	->setUfConfig('sequentialUploads', true);
	}
	
	// Customise gridfield
	$gridFieldConfig->removeComponentsByType('GridFieldPaginator'); // Remove default paginator
	$gridFieldConfig->addComponent(new GridFieldPaginator(20)); // Add custom paginator
	$gridFieldConfig->addComponent(new GridFieldSortableRows('SortOrder')); 
	$gridFieldConfig->removeComponentsByType('GridFieldAddNewButton'); // We only use bulk upload button			

	// Creates sortable grid field
	$gridfield = new GridField("GalleryImages", "Image Gallery", $this->owner->GalleryImages()->sort("SortOrder"), $gridFieldConfig);
	$fields->addFieldToTab('Root.ImageGallery', $gridfield);
	return $fields;
		
	}
	// Check that folder name conforms to assets class standards. remove spaces and special charachters if used
	function onBeforeWrite() {
		$this->owner->GalFolder = str_replace(array(' ','-'),'-', preg_replace('/\.[^.]+$/', '-', $this->owner->GalFolder));
	parent::onBeforeWrite();
	}
}

class GalleryPage_Controller extends Extension implements PermissionProvider  {
	private static $allowed_actions = array (
	);
		
	public function init() {
	parent::init();
	
	//Load  CSS requirements
	Requirements::css("ss3Gallery/css/bootstrap-image-gallery.css");
	Requirements::css("ss3Gallery/css/blueimp-gallery.min.css");

	//Load  Javascript requirements
	Requirements::javascript("ss3Gallery/js/jquery.blueimp-gallery.min.js");
	Requirements::javascript("ss3Gallery/js/bootstrap-image-gallery.min.js");
	Requirements::javascript("ss3Gallery/js/blueimp-gallery-fullscreen.js");

	// Call the blue imp jquery
	Requirements::customScript("
	
	document.getElementById('links').onclick = function (event) {
event = event || window.event;
var target = event.target || event.srcElement,
	link = target.src ? target.parentNode : target,
	options = {index: link, event: event},
	links = this.getElementsByTagName('a');
blueimp.Gallery(links, options);
};
	");
		}	
		 
		//Add permission check boxes to CMS
		public function providePermissions() {
		return array(
		  "VIEW_GALLERY" => "View Gallery Pages",
		  "EDIT_GALLERY" => "Edit Gallery Pages",
		);
		}
		
		// Set sort order for images
		public function GetGalleryImages() {
		return $this->owner->GalleryImages()->sort("SortOrder");
		echo "Hi Shaun";
		}
}

Just skimming through the code.

Not tested anything, but a couple of thoughts:
- 'GalleryPage->getCMSFields' can be removed. The extension hook is named 'updateCMSFields'
- 'ContentController->init', the extension hook is named 'contentcontrollerInit'
- 'parent::init()' is unnecessary in an Extension and will produce ugly errors -- method 'init' does not exist on 'Extension'
- 'parent::onBeforeWrite();' is unnecessary and will produce errors -- DataExtension->onBeforeWrite() is abstract
- 'return $fields' is unnecessary
- I don't think 'providePermissions' has a extension hook...

Edit:
- 'ContentController->init', the extension hook is named 'contentcontrollerInit'
Further: the hook is actually part of the related DataObject and not of ContentController. Rename your 'init' method to 'contentcontrollerInit' and move the method to your GalleryPage Extension.

Thanks. I still cant get the requirements to load. I made the other changes to the GalleryPage class and then the following to the controller:

 

class GalleryPage_Controller extends Extension {
		
	public function contentcontrollerInit() {
	
	//Load  CSS requirements
	Requirements::css("ss3Gallery/css/bootstrap-image-gallery.css");
	Requirements::css("ss3Gallery/css/blueimp-gallery.min.css");

	//Load  Javascript requirements
	Requirements::javascript("ss3Gallery/js/jquery.blueimp-gallery.min.js");
	Requirements::javascript("ss3Gallery/js/bootstrap-image-gallery.min.js");
	Requirements::javascript("ss3Gallery/js/blueimp-gallery-fullscreen.js");

	// Call the blue imp jquery
	Requirements::customScript("
	
	document.getElementById('links').onclick = function (event) {
event = event || window.event;
var target = event.target || event.srcElement,
	link = target.src ? target.parentNode : target,
	options = {index: link, event: event},
	links = this.getElementsByTagName('a');
blueimp.Gallery(links, options);
};
	");
		}	

}

// Extend the page class
SiteTree::add_extension('GalleryPage');
Page_Controller::add_extension('GalleryPage_Controller');

'contentcontrollerInit' should be part of GalleryPage. There is no hook for it in the controller. The hook in the controller refers to the DataObject.

::yaml
SiteTree:
  extensions:
    - PageExtension

::php
class PageExtension extends DataExtension {
	public function contentcontrollerInit() {
		Requirements::customScript("alert('me');");
	}
}

https://github.com/NightJar/ssrigging-gallery