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Moderators: martimiz, Sean, Ed, biapar, Willr, Ingo, swaiba

Adding objects (not pages) as a child of a (Parent) page


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4 Posts   860 Views

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wilsonStaff

Community Member, 143 Posts

20 December 2012 at 8:45am

Hi to all, first i know about DataObjectsAsPages, but was wondering if there is something simplier that i can use, i.e. custom php fonction.

Usually, if i need children of a parent page, i add a page in the site tree that are related to the parent page:
MY SONGS
- Help me
- Shout
- Building this town

where each children page have customs textfields to track .mp3's, titles etc.

But this quickly loads the site tree.

- - -

What i need is a trick that will allow me to add (via a tab in the CMS) a child to any parent page (or to a precise parent only).

These children:
- wouldnt be visible in the sitetree
- could be controlled via <% control .... %> in the templates
- could bear any parameters in need: textfield to track .mp3, .mov, .webm, etc.

Is this exactly what DataObjectsAsPages do?

Thanks!

Avatar
Sean

Forum Moderator, 922 Posts

20 December 2012 at 9:09pm

Edited: 20/12/2012 9:13pm

What you're after is a DataObject class. The page itself would be the parent extending Page and the children extend DataObject. You link them by defining the has_many static on the Page and the has_one static on the child DataObject class.

For example, it might look like this:

<?php
class SongPage extends Page {

	public static $has_many = array(
		'Songs' => 'Song'
	);

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

		// insert a table allow adding/editing/deleting children Song DataObjects

		return $fields;
	}

}
class Song extends DataObject {

	public static $db = array(
		'Title' => 'Varchar(100)',
		'Format' => 'Enum("wav,mp3,ogg")'
	);

	public static $has_one = array(
		'SongPage' => 'SongPage'
	);

}

Of course I've missed off the bit where you enter the table in the CMS to add/edit/delete the related Song DataObjects.

Are you using SilverStripe 3.0? If so, you'd add a GridField in there which allows you to do that.
On 2.4 you have to use a ComplexTableField.

Sean

Avatar
wilsonStaff

Community Member, 143 Posts

21 December 2012 at 1:44am

Hi Sean, i am using either SS3.0.x or 2.4.x depending upon if its a new site or an update.

Ive builded a couple of sites with SS3, and so far its gooing well - minus the non-working Get-Image-From-The-FIle-Store.

- - -

Back to question, can you point mw toward some tutorials about how to add GridField (SS3) or ComplexTextField(SS2.4.x). What i need is a that like the Content / Parameters / etc tabs.

Thanks!

Avatar
copernican

Community Member, 189 Posts

21 December 2012 at 5:53am

Check out the docs for a rundown on GridField http://doc.silverstripe.org/framework/en/reference/grid-field.

For a quick how to... GridFields are amazingly easy to setup. Using Sean's code:

<?php 
class SongPage extends Page {

   public static $has_many = array( 
      'Songs' => 'Song' 
   );

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

     $fields->addFieldToTab('Root.SongManager', GridField::create('Songs', 'Song', $this->Songs(), GridFieldConfig_RecordEditor());

      return $fields; 
   }

}