Drupal Development

Drupal Code: Day 1 where am i, and how did i get all these arrays

Hi. I’m eaton.

Drupal is... http://www.ﬂickr.com/photos/druclimb/282597447/

Drupal is... Drupal Core http://www.ﬂickr.com/photos/druclimb/282597447/

Drupal is... Node Drupal Core User http://www.ﬂickr.com/photos/druclimb/282597447/

Drupal is... Views Five Star CCK Node Drupal Core User http://www.ﬂickr.com/photos/druclimb/282597447/

Drupal is... Theme Views Five Star CCK Node Drupal Core User http://www.ﬂickr.com/photos/druclimb/282597447/

name = Demo description = Just a simple demo module. core = 6.x function demo_nodeapi(&$node, $op) { global $user; if ($op == ‘view’) { if ($node->uid == $user->uid) { $node->title . ‘ [YOUR ARTICLE]’; } } } demo.info demo.module

name = Tricky description = A slightly trickier module. core = 6.x function tricky_form_alter(&form, $form_state, $id) { if ($id == ‘node_form’) { $title[‘#required’] = FALSE; } } function tricky_install() { drupal_set_message(‘You just installed Tricky!’); } tricky.info tricky.module tricky.install

views.info views.module views.inc user.inc node.inc blog.inc comment.inc ui.info ui.module arguments.inc handlers.inc ﬁlters.inc query.inc sprout.info sprout.module forum.inc views.pages.inc table.inc views.install sprout.install sprout.admin.inc sprout.inc CHANGELOG README

under the hood http://www.ﬂickr.com/photos/sprakope/143770402/

I’d like welcome.html!

I’ll go get that html ﬁle!

I’ll go get that html ﬁle! .htaccess says to check… index.php?q=welcome.html

Index.php? I’ve got that.

Index.php? I’ve got that. bootstrap.inc menu.inc random mysql user

Here are all my URLs…

function mymodule_menu() { $items['about'] = array( 'title' => 'About us', 'description' => 'A description of us.', 'page callback' => 'mymodule_about', 'access arguments' => array('access content'), ); return $items; } Here are all my URLs…

What’s the best match?

What’s the best match? Is welcome.html an alias? Does anyone handle the path? Does the user have access?

I’ll build the contents.

function mymodule_about($subpage = ‘legal’) { if ($subpage == ‘legal’) { return “We don’t have lawyers yet.”; } if ($subpage == ‘welcome’) { return “Welcome to our web site!”; } } I’ll build the contents.

I’ll take that HTML...

Here’s index.php… Eh, looks like welcome.html…

don’t use a hack. hook! http://www.ﬂickr.com/photos/lanier67/185311136/

A list of content types A user is is being built registering A node is being Content is being displayed searched The menu is Links are being being built displayed The database is being queried A comment is being posted A form is being processed

module_invoke_all(‘foo’)

yourmodule_foo()

theirmodule_foo() mymodule_foo() yourmodule_foo() hismodule_foo() hermodule_foo()

i All w i t h o u t h a ng ing Dr u p a l’s c o w n c o de ! ?

Don’t. Hack. Core.

let’s see a module! http://www.ﬂickr.com/photos/gonzales2010/8632116/

name = Birthday description = Wishes users a happy birthday. requirements[] = user core = 6.x

/** * Allows users to save their birthday, * and congratulates them on the big day. */ function birthday_menu() { $items['admin/settings/birthdays'] = array( 'title' => 'Birthday settings', 'description' => 'Settings for birthdays.', 'page callback' => 'birthday_page', 'access arguments' => array('administer users'), ); return $items; } function birthday_page() { return drupal_get_form('birthday_form'); }

function birthday_form() { $form['birthday_age'] = array( '#type' => 'checkbox', '#title' => t(quot;Show users how old they are.quot;), '#default_value' => variable_get('age', TRUE), ); $form['submit'] = array( '#type' => 'submit', '#value' => t('Save settings'), ); return $form; } function birthday_form_submit($form, $form_state) { $values = $form_state['values']; variable_set('age', $values['birthday_age']); drupal_set_message(t('Birthday settings saved.')); }

function birthday_song() { $path = drupal_get_path('module', 'birthday'); $path .= '/birthday.mid '; $output = '<embed src=quot;' . $path . 'quot;; $output .= ' autostart=quot;truequot; loop=quot;truequot;'; $output .= ' width=quot;2quot; height=quot;0quot;></embed>'; return $output; }

http://www.ﬂickr.com/photos/thomashawk/2681744739

drupal manages the page http://www.ﬂickr.com/photos/thomashawk/2681744739

drupal manages the page modules build the content http://www.ﬂickr.com/photos/thomashawk/2681744739

drupal manages the page modules build the content modules also respond to events http://www.ﬂickr.com/photos/thomashawk/2681744739

drupal manages the page modules build the content modules also respond to events hack with hooks http://www.ﬂickr.com/photos/thomashawk/2681744739

api.drupal.org tinyurl.com/drupal-code tinyurl.com/drupal-kickstart tinyurl.com/drupal-rocking

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Drupal Development

by Jeff Eaton on May 11, 2009

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