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Drupal Development
The document is notes from a Drupal training course. It introduces some core Drupal concepts like nodes, users, and modules. It then provides an example of a birthday module that allows users to save their birthday, displays it on their profile, and shows a happy birthday message on their birthday. The module utilizes hooks, forms, blocks, and other Drupal APIs.
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Editor's Notes
- #5 Core - bootstrap, route incoming page requests to modules Modules - Build page content and respond to events Many third-party modules, some build on top of other modules Theme - Turn data from modules into HTML. We’ll be concentrating on the module side of things today.
- #6 Core - bootstrap, route incoming page requests to modules Modules - Build page content and respond to events Many third-party modules, some build on top of other modules Theme - Turn data from modules into HTML. We’ll be concentrating on the module side of things today.
- #7 Core - bootstrap, route incoming page requests to modules Modules - Build page content and respond to events Many third-party modules, some build on top of other modules Theme - Turn data from modules into HTML. We’ll be concentrating on the module side of things today.
- #8 Core - bootstrap, route incoming page requests to modules Modules - Build page content and respond to events Many third-party modules, some build on top of other modules Theme - Turn data from modules into HTML. We’ll be concentrating on the module side of things today.
- #9 Core - bootstrap, route incoming page requests to modules Modules - Build page content and respond to events Many third-party modules, some build on top of other modules Theme - Turn data from modules into HTML. We’ll be concentrating on the module side of things today.
- #10 Core - bootstrap, route incoming page requests to modules Modules - Build page content and respond to events Many third-party modules, some build on top of other modules Theme - Turn data from modules into HTML. We’ll be concentrating on the module side of things today.
- #11 Core - bootstrap, route incoming page requests to modules Modules - Build page content and respond to events Many third-party modules, some build on top of other modules Theme - Turn data from modules into HTML. We’ll be concentrating on the module side of things today.
- #12 Core - bootstrap, route incoming page requests to modules Modules - Build page content and respond to events Many third-party modules, some build on top of other modules Theme - Turn data from modules into HTML. We’ll be concentrating on the module side of things today.
- #13 Core - bootstrap, route incoming page requests to modules Modules - Build page content and respond to events Many third-party modules, some build on top of other modules Theme - Turn data from modules into HTML. We’ll be concentrating on the module side of things today.
- #14 This is a module. Two files, A few lines of code. In Drupal, that’s all you need to customize the behavior of the system and add new functionality.
- #15 A little more complicated. Shorter function, has an .install file.
- #16 This is a module, too. Views, one of Drupal’s most popular, contains over 400 files, over a meg of code and inline docs. Don’t worry, there’s a middle ground. We’re going to cover what they have in common.
- #17 This is a module, too. Views, one of Drupal’s most popular, contains over 400 files, over a meg of code and inline docs. Don’t worry, there’s a middle ground. We’re going to cover what they have in common.
- #19 Part 1: user with a web browser makes a request. sends a URL, optionally a cookie. http://www.mysite.com/articles/welcome.html
- #20 Apache intercepts the request. Possibly routes it to other servers What folder should I look in for foo.com? Normally, it would then check /articles for a welcome.html file and send it back. .htaccess turns foo.com/blah into foo.com/index.php?q=blah ...And PHP takes over.
- #21 Apache intercepts the request. Possibly routes it to other servers What folder should I look in for foo.com? Normally, it would then check /articles for a welcome.html file and send it back. .htaccess turns foo.com/blah into foo.com/index.php?q=blah ...And PHP takes over.
- #22 Apache intercepts the request. Possibly routes it to other servers What folder should I look in for foo.com? Normally, it would then check /articles for a welcome.html file and send it back. .htaccess turns foo.com/blah into foo.com/index.php?q=blah ...And PHP takes over.
- #23 Apache intercepts the request. Possibly routes it to other servers What folder should I look in for foo.com? Normally, it would then check /articles for a welcome.html file and send it back. .htaccess turns foo.com/blah into foo.com/index.php?q=blah ...And PHP takes over.
- #24 Bootstrap All page requests go through index.php (front-side controller) Bootstrap Drupal core, load essential includes What site am I running? connect to database Is there a cookie? Load the user. Now, ask for menu items...
- #25 Bootstrap All page requests go through index.php (front-side controller) Bootstrap Drupal core, load essential includes What site am I running? connect to database Is there a cookie? Load the user. Now, ask for menu items...
- #26 Bootstrap All page requests go through index.php (front-side controller) Bootstrap Drupal core, load essential includes What site am I running? connect to database Is there a cookie? Load the user. Now, ask for menu items...
- #27 Bootstrap All page requests go through index.php (front-side controller) Bootstrap Drupal core, load essential includes What site am I running? connect to database Is there a cookie? Load the user. Now, ask for menu items...
- #28 Bootstrap All page requests go through index.php (front-side controller) Bootstrap Drupal core, load essential includes What site am I running? connect to database Is there a cookie? Load the user. Now, ask for menu items...
- #29 The module Why, yes! Here’s a list of all the URLs I can handle. Explain each line. See api.drupal.org This is called a hook. We’ll get to this later.
- #30 The module Why, yes! Here’s a list of all the URLs I can handle. Explain each line. See api.drupal.org This is called a hook. We’ll get to this later.
- #31 Traffic Cop Is welcome.html an SEO-friendly alias? (about/welcome vs. welcome.html) Find the best match. (about) Run access checks. Call the function, passing along unused pieces of the path
- #32 Grunt work Module’s function gets called. Extra params passed along. That’s how node module works -- ‘node’ plus a wildcard Can do anything now: print out JSON and exit(), etc. To build a normal page, build HTML and return it.
- #33 Grunt work Module’s function gets called. Extra params passed along. That’s how node module works -- ‘node’ plus a wildcard Can do anything now: print out JSON and exit(), etc. To build a normal page, build HTML and return it.
- #34 Presentation Checks for 404, 403, and empty page. index.php now has the contents of the page. theme(‘page’, $content) Sidebar blocks get loaded, the theme system is given a chance to add CSS and JS, etc.
- #35 Presentation Checks for 404, 403, and empty page. index.php now has the contents of the page. theme(‘page’, $content) Sidebar blocks get loaded, the theme system is given a chance to add CSS and JS, etc.
- #36 Presentation Checks for 404, 403, and empty page. index.php now has the contents of the page. theme(‘page’, $content) Sidebar blocks get loaded, the theme system is given a chance to add CSS and JS, etc.
- #37 Oh, look. Welcome.html! Apache gets back the fully rendered HTML. Sweet. Document gets fired back to the user. The user’s browser renders it -- and they click on the next link and the process starts all over again.
- #38 Important detail: when drupal asked about menus and modules responded, we saw a hook. hooks are everywhere: when pieces of content load, when a db query is run, when a user logs in… that’s a drupal event. module_invoke_all(‘hook’) => for modules()… <name>_menu() Modules can create their own hooks just by calling module_invoke_all()
- #39 As a Drupal page is built, events are firing nonstop.
- #40 As a Drupal page is built, events are firing nonstop.
- #41 As a Drupal page is built, events are firing nonstop.
- #42 As a Drupal page is built, events are firing nonstop.
- #43 As a Drupal page is built, events are firing nonstop.
- #44 As a Drupal page is built, events are firing nonstop.
- #45 As a Drupal page is built, events are firing nonstop.
- #46 As a Drupal page is built, events are firing nonstop.
- #47 As a Drupal page is built, events are firing nonstop.
- #54 Hooks can announce what’s going on Allow modules to answer questions Allow modules to extend functionality Allow modules to change existing workflows
- #55 Hooks can announce what’s going on Allow modules to answer questions Allow modules to extend functionality Allow modules to change existing workflows
- #56 Hooks can announce what’s going on Allow modules to answer questions Allow modules to extend functionality Allow modules to change existing workflows
- #57 Hooks can announce what’s going on Allow modules to answer questions Allow modules to extend functionality Allow modules to change existing workflows
- #58 Hooks can announce what’s going on Allow modules to answer questions Allow modules to extend functionality Allow modules to change existing workflows
- #59 What does “hacking core” mean? Why is it bad?
- #60 What does “hacking core” mean? Why is it bad?