Drupal builds its pages dynamically using a combination of the following components:
1. **Modules**: Drupal's functionality is extended through modules, which are packages of code that add features and functionality to your site. Modules can define custom content types, add administrative interfaces, and implement various site features.
2. **Themes**: Themes control the presentation layer of Drupal sites, including layout, styling, and design. Themes consist of template files, CSS stylesheets, and sometimes JavaScript files that determine how content is displayed to users.
3. **Blocks**: Blocks are modular units of content or functionality that can be placed in regions defined by your theme. Drupal core provides several default blocks, such as the site branding block, navigation menu block, and user login block. Additionally, modules can define custom blocks to display specialized content or features.
4. **Templates**: Templates are PHP files that define the structure and layout of individual components on a Drupal page. When a page is requested, Drupal's theme system uses template files to render the HTML output, dynamically inserting content and applying styling based on the active theme.
5. **Hooks**: Drupal's hook system allows modules to interact with core functionality and modify the behavior of the system. Modules can implement hooks to alter or extend Drupal's default behavior, such as adding custom processing to form submissions or modifying page output before it is rendered.
6. **Render Pipeline**: Drupal's render pipeline processes page requests and generates HTML output based on the active theme, enabled modules, and configuration settings. This process involves gathering data from various sources, applying theme templates and styles, and assembling the final HTML output to send to the user's browser.
Overall, Drupal's flexible architecture allows developers to build complex websites and applications by combining and extending these core components to meet specific requirements. The modular nature of Drupal enables developers to customize and extend functionality while maintaining a consistent user experience across different pages and sections of the site.
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