Drupal & Ajax - Basic Tutorial | Viziontech Software Solutions. The following tutorial will guide you step by step how to create a quick implementation of Ajax in Drupal. We will dynamically update a page with content we will read from the server without the need to refresh the page. I tried to make it as simple as possible, just to describe the very basic blocks required to implement Ajax. I suggest you take it further and try to implement more complex implementations according to your site's needs.
Let's start...... I was building an e-commerce website based on Drupal 6 & Ubercart the other day, and wanted to ajaxify the way products are being displayed. I wanted the users to be able to select a products category from a list, and based on that selection, to fetch the list of products for that category. Step 1 – Create your “Data Module” In order to be able to return data to the client, we will start by creating a module that will return the data. Copy, pase & save the above code into “dynamic_products.info”. Save the .module file. Drupal & Ajax - How to dynamically update view display | Viziontech Software Solutions. The following tutorial, will describe how to dynamically update your page with view results.
It will be based on the Drupal & Ajax - Basic Tutorial, which breaks down the steps of implementing basic Ajax with Drupal. So if you still haven't read it, now will be a good time to do so. I will also use the code from that tutorial to extend the implementation. What I'm going to add in this tutorial is: Load an existing view.Setup view parameters for execution.Execute the view.Load the themed view to the JSON object and return it.
Step 1 - Create "Product" content type Let's define a new content type. DescriptionPriceCategory Only for the simplicity of this example, go ahead and define all fields as simple text fields. Step 2 - Create content It is now time to create "Simple Product" content items, so create a list of products(at least 6 products). Step 3 - Create the view The next task you will need to complete is to create a view. That's it. About overriding themable output. Last updated May 7, 2012. Created by dvessel on September 7, 2007.Edited by onefreewalk, hansrossel, add1sun, arianek. Log in to edit this page. The following only applies when the default markup needs changes. This section can be skipped if the presentation is handled only through style sheets.
There are three aspects to overriding the themed output. The first is knowing where the source originates, the second is providing the override, and third is understanding its type. Note that Drupal maintains cached theming data through the theme registry. 1. Finding the source can be difficult to track down due to the hierarchy of theming calls whose source can be spread throughout the whole system. Links to 520KB PDF. Most of the page elements are typically pulled with theme('page') and placed inside the page.tpl.php template after rendering navigation bits, the bits within the navigation bits, block regions, the blocks within the block regions, etc. 2. 3.
Links to PDF. Overriding functions: <? Hooks | module.inc. Allow modules to interact with the Drupal core. Drupal's module system is based on the concept of "hooks". A hook is a PHP function that is named foo_bar(), where "foo" is the name of the module (whose filename is thus foo.module) and "bar" is the name of the hook. Each hook has a defined set of parameters and a specified result type. To extend Drupal, a module need simply implement a hook. When Drupal wishes to allow intervention from modules, it determines which modules implement a hook and calls that hook in all enabled modules that implement it.
The available hooks to implement are explained here in the Hooks section of the developer documentation. The string "hook" is used as a placeholder for the module name in the hook definitions. Functions File includes/module.inc, line 379 API for loading and interacting with Drupal modules. Using the theme layer (Drupal 6.x)
See also: Theme handbook (D6) Modules in Drupal have the capability to allow presentation to be overridden for use on individual sites; this capability is called theming. In order for the theme layer to be usable, a module must be written to take advantage of it. To do this, logic must be separated as much as possible from presentation. To accomplish this, modules do as much of the work on the data as possible, and hand that data off to the presentation layer. Modules then provide default implementations that provide the basic presentation and serve as a basis for themes that wish to provide an alternate presentation. This is handled through the theme() function.
Ideally, your module won't produce a single line of HTML output that is not in a theme implementation. Registering theme hooks In order to utilize a theme hook, your module first has to register that this exists. <? This registration tells us that a theme hook named forums is implemented. Implementing default templates. Documentation.