Nick Dunn nickdunn

Forms have been an integral part of any interactive site since the dawn of time — they promote interactivity and are usually the most common way users interact with a site. It's commonplace that when a form is submitted (input), the website will take 'action' and do something with the data (processing) and then provide a user with the result (output). Symphony provides this logic layer via events.

This tutorial assumes you have a basic understanding of how events work in Symphony (if not, this may be a good introduction) and are semi-comfortable writing some PHP code. I'll be showing you some of the lesser-known features of Symphony events, including event priority, event chaining, and a brief demonstration of how to write a custom event. The difficulty level progresses as we go through, but with any luck you'll be able to learn a thing or two :)

Getting Started

The Scenario

Our client requires a form that allows a user to submit some detai

===========================
tbl_entries
===========================
id				int (PK)
created_date	date
created_by		int (FK)
default_version	int
is_deleted		boolean

===========================

A Symphony Textmade bundle could include:

Templates (File > New from Template > Symphony)

Extension Driver
Data Source
Event
Field
JavaScript
README.markdown

	<?php

	require_once('pclzip.lib.php');

	$name = 'publishfiltering';
	$tmp_zip_path = $name . '-' . sha1(microtime());
	$tmp_zip_name = $tmp_zip_path . '.zip';

	file_put_contents($tmp_zip_name, file_get_contents('https://github.com/nickdunn/publishfiltering/zipball/1.6.0'));

	<?php

	Class Extension_Save_And_Close extends Extension {

	public function about() {
	return array(
	'name' => 'Save And Close',
	'version' => '1.0'
	);
	}

	SELECT
	`e`.id, `e`.section_id, e.`author_id`, UNIX_TIMESTAMP(e.`creation_date`) AS `creation_date`
	FROM
	`sym_entries` AS `e`
	LEFT JOIN `sym_entries_data_10` AS `sbl` ON (`e`.`id` = `sbl`.`relation_id`)
	LEFT JOIN `sym_member_replies` AS `replies` ON (`e`.`id` = `replies`.`entry_id` AND `replies`.`member_id` = 1)
	WHERE
	1 AND `e`.`section_id` = '1'
	GROUP BY
	`e`.`id`

	<?xml version="1.0" encoding="UTF-8" ?>

	<extension>

	<name>Search Index</name>

	<release>
	<version>0.9.1</version>
	<date>2011-07-08</date>
	</release>

	<?php
	require_once(CORE . '/class.frontend.php');

	Class extension_seme4_semantics extends Extension {

	public function about() {
	return array('name' => 'Seme4 Semantics',
	'version' => '1.1',
	'release-date' => '2010-03-01',
	'author' => array('name' => 'Nick Dunn',

	<?xml version="1.0" encoding="UTF-8" ?>

	<extension id="search_index">

	<!-- string, required -->
	<name>Search Index</name>

	<!-- string, required (@lang optional) -->
	<description lang="en">Index text content of entries for efficient full-text search.</description>

	/* Syntax Highlighting */
	pre[class] {
	margin-bottom: 1.5em;
	border: 1px solid #393937;
	overflow: hidden;
	background-color: #191917;
	white-space: normal;
	font: inherit;
	}
	pre[class] code {