Hello

I have a "MonkeeBlogPage" wich has_Many "MonkeeBlogEntries"
"MonkeeBolgEntry" has_one MonkeeBlogPage

Now in SS2.4, using DataObjectManager the Relation would be saved and added automatically.
With GridField in SS3 this is not the case.

Any Solution for that case? If i add a DataObject trought a Gridfield on a Page, it is not very Convenient that i have to choose the belonging Page on every new Dataobject, that should happen automatically. How can i accomplish this?

<?php
class MonkeeBlogPage extends Page {

	public static $db = array(
	);

	public static $has_one = array(
	);

	public static $has_many = array(
		'MonkeeBlogEntries' => 'MonkeeBlogEntry',
		'MonkeeBlogCategory' => 'MonkeeBlogCategory'
	);




	function getCMSFields() {
		$fields = parent::getCMSFields();

		$gridFieldConfig =  GridFieldConfig::create()->addComponents(
			      new GridFieldToolbarHeader(),
			      new GridFieldAddNewButton('toolbar-header-right'),
			      new GridFieldSortableHeader(),
			      new GridFieldDataColumns(),
			      new GridFieldPaginator(10),
			      new GridFieldEditButton(),
			      new GridFieldDeleteAction(),
			      new GridFieldDetailForm()
		        );

		/* Blog Entries */
		$blogGridConfig = $gridFieldConfig;
		$blogGridConfig->addComponent(new GridFieldSortableRows('SortOrder'));

		$blogGridField = new GridField("MonkeeBlogEntries", "Monkee Blog Entries", DataObject::get('MonkeeBlogEntry'), $blogGridConfig,$this);	
		$fields->addFieldToTab("Root.Main", $blogGridField,'Content'); // add the grid field to a tab in the CMS	
		
		 $fields->removeByName('Content');

		return $fields;
	} 



}

and

<?php
class MonkeeBlogEntry extends DataObject {
	
	static $db = array(
		'Title' => 'VarChar',
		'Content' => 'HTMLText',
		'Datum' => 'Date',
		'SortOrder' => 'Int'
	);
	
	static $has_one = array(
		'MonkeeBlogPage' => 'MonkeeBlogPage',
		'TitelBild' => 'Image'		
	);

	static $many_many = array(
		'MonkeeBlogCategories' => 'MonkeeBlogCategory'
	);

	static $defaults = array(
		'Datum' => 'now'
	);

	function getCMSFields() {

		$datefield = new DateField('Date');
		$datefield->setConfig('showcalendar','true');

		$gridFieldConfig =  GridFieldConfig::create()->addComponents(
			      new GridFieldToolbarHeader(),
			      new GridFieldAddNewButton('toolbar-header-right'),
			      new GridFieldSortableHeader(),
			      new GridFieldDataColumns(),
			      new GridFieldPaginator(10),
			      new GridFieldEditButton(),
			      new GridFieldDeleteAction(),
			      new GridFieldDetailForm()
	    );


		return new FieldList( 
			new TextField('Title'),
			new HTMLEditorField('Content'),
			$datefield,
			new ImageField('TitelBild'),
			new GridField("MonkeeBlogCategories", "Kategorien", DataObject::get('MonkeeBlogCategory'), $gridFieldConfig)
		);
	} 
	

}

Monkee,

You shouldn't be using Dataobject::get() calls anymore as they are now deprecated in favor of DataList::create(). But for this particular case there is a really easy way to do this. Instead of...

$blogGridField = new GridField("MonkeeBlogEntries", "Monkee Blog Entries", DataObject::get('MonkeeBlogEntry'), $blogGridConfig,$this);    

do

$blogGridField = new GridField("MonkeeBlogEntries", "Monkee Blog Entries", $this->MonkeeBlogEntries(), $blogGridConfig,$this);    

Also, instead of building your own gridFieldConfig (unless there are certain customizations you want to do) its quicker and easier to use GridFieldConfig_RelationEditor::create(), like so.

$blogGridField = new GridField("MonkeeBlogEntries", "Monkee Blog Entries", $this->MonkeeBlogEntries(), GridFieldConfig_RelationEditor::create(),$this);

The relationEditor is a "pre made" GridFieldConfig.

IOTI - Thanks a LOT! You are definitely my Hero for today...
... actually i tried

$this->MonkeeBlogEntries()

but was missing the $this at the end of new GridField... Damn - so close ;-)

Unfortunately i need my own config to add Sorting Capability to the GriedfFeld - but thanks for the tipp, works like a charm!
--> Update: Just realized:

	$blogGridConfig = GridFieldConfig_RelationEditor::create();
	$blogGridConfig->addComponent(new GridFieldSortableRows('SortOrder'));

works perfectly!
Here's the Link to the Sortable GridField Module: https://github.com/UndefinedOffset/SortableGridField

Sincerly

Monkee