Using a preAdd trigger on a hidden attribute - Revision history

bahtiar: spam

2007-06-10T19:57:11Z

spam

@@ Line 58: / Line 58: @@
      // This is basically the trick; hide the is_backend field that is created
      // in the parent node.
-     $attr =</syntaxhighlight>
+     $attr = &$this->getAttribute("is_backend");

Hf1Sx1 at 19:47, 10 June 2007

2007-06-10T19:47:46Z

@@ Line 58: / Line 58: @@
      // This is basically the trick; hide the is_backend field that is created
      // in the parent node.
-     $attr = &$this->getAttribute("is_backend");
+     $attr =</syntaxhighlight>

Leon: Fix destruction

2007-04-11T10:30:45Z

Fix destruction

@@ Line 58: / Line 58: @@
      // This is basically the trick; hide the is_backend field that is created
      // in the parent node.
-     $attr =</syntaxhighlight>
+     $attr = &$this->getAttribute("is_backend");

KkdApv at 09:23, 11 April 2007

2007-04-11T09:23:47Z

@@ Line 58: / Line 58: @@
      // This is basically the trick; hide the is_backend field that is created
      // in the parent node.
-     $attr = &$this->getAttribute("is_backend");
+     $attr =</syntaxhighlight>

bahtiar at 15:20, 14 January 2007

2007-01-14T15:20:57Z

← Older revision		Revision as of 15:20, 14 January 2007
Line 13:		Line 13:
	See the comments in the code for an explanation.		See the comments in the code for an explanation.

	<~~pre~~>		<syntaxhighlight lang="php">
	class news extends atkNode {		class news extends atkNode
	function news($type="news",$flags=0) {		{
	// The $type is important, otherwise the links in the admin		function news($type="news",$flags=0)
	// view will goto this node instead of to the child node		{
			// The $type is important, otherwise the links in the admin
			// view will goto this node instead of to the child node

	$this->atkNode($type, NF_ADD_LINK);		$this->atkNode($type, NF_ADD_LINK);

	$this->add(new atkAttribute("news_id", AF_AUTOKEY));		$this->add(new atkAttribute("news_id", AF_AUTOKEY));
	$this->add(new atkAttribute("title", AF_SEARCHABLE));		$this->add(new atkAttribute("title", AF_SEARCHABLE));
	$this->add(new atkTextAttribute("text", AF_SEARCHABLE\|AF_HIDE_LIST));		$this->add(new atkTextAttribute("text", AF_SEARCHABLE\|AF_HIDE_LIST));

	// You have to add the is_backend property to the parent node		// You have to add the is_backend property to the parent node
	// because otherwise you can't use it in the preAdd function.		// because otherwise you can't use it in the preAdd function.
	$this->add(new atkBoolAttribute("is_backend"));		$this->add(new atkBoolAttribute("is_backend"));

	$this->setTable("news");		$this->setTable("news");
	}		}
	}		}
	</~~pre~~>		</syntaxhighlight>

	The "news_backend" is almost the same as the "news_site" node, just replace the 1's with 0's :).		The "news_backend" is almost the same as the "news_site" node, just replace the 1's with 0's :).

	<~~pre~~>		<syntaxhighlight lang="php">
	// Import the parent node, otherwise you can't extend it		// Import the parent node, otherwise you can't extend it
	// "modules" is the name of the modules directory and		// "modules" is the name of the modules directory and
Line 42:		Line 44:
	atkimport("modules.inhoud.news");		atkimport("modules.inhoud.news");

	class news_backend extends news {		class news_backend extends news
	function news_backend() {		{
	// Call constructor of parent node with the name of the current node		function news_backend()
	// so the atkNode function can be called with the right node name		{
	parent::news("news_backend");		// Call constructor of parent node with the name of the current node
			// so the atkNode function can be called with the right node name
			parent::news("news_backend");

	// This filter takes care of only showing the items with the is_backend		// This filter takes care of only showing the items with the is_backend
	// field set to '1'.		// field set to '1'.
	$this->addFilter("is_backend","1");		$this->addFilter("is_backend","1");

	// This is basically the trick; hide the is_backend field that is created		// This is basically the trick; hide the is_backend field that is created
	// in the parent node.		// in the parent node.
	$attr = &$this->getAttribute("is_backend");		$attr = &$this->getAttribute("is_backend");
	$attr->addFlag(AF_HIDE);		$attr->addFlag(AF_HIDE);
	}		}

	// preAdd function, will only work if the "is_backend" field is present		// preAdd function, will only work if the "is_backend" field is present
	// and visible(!) in the parent node.		// and visible(!) in the parent node.
	function preAdd(&$record) {		function preAdd(&$record)
	$record["is_backend"] = 1;		{
	}		$record["is_backend"] = 1;
			}
	}		}
	</~~pre~~>		</syntaxhighlight>

	== Comments ==		== Comments ==

bahtiar: Extending nodes with a preAdd function on a hidden field moved to Using a preAdd trigger on a hidden attribute

2006-06-24T07:54:14Z

Extending nodes with a preAdd function on a hidden field moved to Using a preAdd trigger on a hidden attribute

← Older revision	Revision as of 07:54, 24 June 2006
(No difference)

Meinaart: /* Issue */

2006-06-23T11:56:18Z

Issue

← Older revision		Revision as of 11:56, 23 June 2006
Line 4:		Line 4:
	I wanted to use the news table in my database for 2 sections of the website (backend and frontend). So I added a field called "is_backend" to the table "news".		I wanted to use the news table in my database for 2 sections of the website (backend and frontend). So I added a field called "is_backend" to the table "news".

	The most userfriendly solution for editing this table was to create 2 nodes. I called ~~those notes~~ "news_backend" and "news_site".		The most userfriendly solution for editing this table was to create 2 nodes. I called these nodes "news_backend" and "news_site".

	Because both the "news_site" and "news_backend" contained the same fields I created a base "news" node containing all the basic fields. The "news_site" and "news_backend" are extending the "news" node. I wanted to add a filter on the "is_backend" field so the right items would show up in the admin-view.		Because both the "news_site" and "news_backend" contained the same fields I created a base "news" node containing all the basic fields. The "news_site" and "news_backend" are extending the "news" node. I wanted to add a filter on the "is_backend" field so the right items would show up in the admin-view.

Meinaart at 11:53, 23 June 2006

2006-06-23T11:53:57Z

New page

{{howto|Advanced|[[Meinaart van Straalen]] <meinaart@zicht.nl>}}

== Issue ==
I wanted to use the news table in my database for 2 sections of the website (backend and frontend). So I added a field called "is_backend" to the table "news".

The most userfriendly solution for editing this table was to create 2 nodes. I called those notes "news_backend" and "news_site".

Because both the "news_site" and "news_backend" contained the same fields I created a base "news" node containing all the basic fields. The "news_site" and "news_backend" are extending the "news" node. I wanted to add a filter on the "is_backend" field so the right items would show up in the admin-view.

I also wanted to fill the "is_backend" field with either "0" or "1". I tried to use the preAdd functionality for this but it wasn't working the way I expected. That's why I wrote this HowTo to share the solution for this problem.

== Code ==
See the comments in the code for an explanation.

<pre>
class news extends atkNode {
function news($type="news",$flags=0) {
// The $type is important, otherwise the links in the admin
// view will goto this node instead of to the child node

$this->atkNode($type, NF_ADD_LINK);

$this->add(new atkAttribute("news_id", AF_AUTOKEY));
$this->add(new atkAttribute("title", AF_SEARCHABLE));
$this->add(new atkTextAttribute("text", AF_SEARCHABLE|AF_HIDE_LIST));

// You have to add the is_backend property to the parent node
// because otherwise you can't use it in the preAdd function.
$this->add(new atkBoolAttribute("is_backend"));

$this->setTable("news");
}
}
</pre>

The "news_backend" is almost the same as the "news_site" node, just replace the 1's with 0's :).

<pre>
// Import the parent node, otherwise you can't extend it
// "modules" is the name of the modules directory and
// "inhoud" the name of the module
atkimport("modules.inhoud.news");

class news_backend extends news {
function news_backend() {
// Call constructor of parent node with the name of the current node
// so the atkNode function can be called with the right node name
parent::news("news_backend");

// This filter takes care of only showing the items with the is_backend
// field set to '1'.
$this->addFilter("is_backend","1");

// This is basically the trick; hide the is_backend field that is created
// in the parent node.
$attr = &$this->getAttribute("is_backend");
$attr->addFlag(AF_HIDE);
}

// preAdd function, will only work if the "is_backend" field is present
// and visible(!) in the parent node.
function preAdd(&$record) {
$record["is_backend"] = 1;
}
}
</pre>

== Comments ==
Feel free to correct my English grammar :).

== External links ==
* [http://www.achievo.org/forum/viewtopic.php?t=560 Discussion about this topic on the ATK Forum]