+PRADO is primarily a presentational framework, although it is not limited to be so. The framework focuses on making Web programming, which deals most of the time with user interactions, to be component-based and event-driven so that developers can be more productive. The following class tree depicts the skeleton classes provided by PRADO, +
+
+
++When a PRADO application is processing a page request, its static object diagram can be shown as follows, +
+
+$callback refers to a valid PHP callback (e.g. a function name, a class method array($object,'method'), etc.)
++Component instantiation means creating instances of component classes. There are two types of component instantation: static instantiation and dynamic instantiation. The created components are called static components and dynamic components, respectively. +
+ ++Dynamic component instantiation means creating component instances in PHP code. It is the same as the commonly referred object creation in PHP. A component can be dynamically created using one of the following two methods in PHP, +
+$component = new ComponentClassName;
+$component = Prado::createComponent('ComponentType');
+
+where ComponentType refers to a class name or a dot-connected type name (e.g. System.Web.UI.TControl). The second approach is introduced to compensate for the lack of namespace support in PHP.
+
+
+
+Static component instantiation is about creating components via configurations. The actual creation work is done by the PRADO framework. For example, in an application configuration, one can configure a module to be loaded when the application runs. The module is thus a static component created by the framework. Static component instantiation is more commonly used in templates. Every component tag in a template specifies a component that will be automatically created by the framework when the template is loaded. For example, in a page template, the following tag will lead to the creation of a TButton component on the page,
+
+<com:TButton Text="Register" /> ++ + \ No newline at end of file diff --git a/demos/quickstart/protected/pages/Fundamentals/Modules.page b/demos/quickstart/protected/pages/Fundamentals/Modules.page index 0f5c47fd..b8472e90 100644 --- a/demos/quickstart/protected/pages/Fundamentals/Modules.page +++ b/demos/quickstart/protected/pages/Fundamentals/Modules.page @@ -5,10 +5,10 @@ A module is an instance of a class implementing the
IModule interface. A module is commonly designed to provide specific functionality that may be plugged into a PRADO application and shared by all components in the application.
-PRADO uses configurations to specify whether to load a module, load what kind of modules, and how to initialize the loaded modules. Developers may replace the core modules with their own implementations via application configuration, or they may write new modules to handle other tasks. For example, a module may be developed to provide common database logic for one or several pages. For more details, please see the configurations. +PRADO uses configurations to specify whether to load a module, load what kind of modules, and how to initialize the loaded modules. Developers may replace the core modules with their own implementations via application configuration, or they may write new modules to provide additional functionalities. For example, a module may be developed to provide common database logic for one or several pages. For more details, please see the configurations.
-There are three core modules that are loaded by default whenever an application runs. They are request module, response module, and error handler module. In addition, session module is loaded when it is used in the application. PRADO provides default implementation for all these modules. +There are three core modules that are loaded by default whenever an application runs. They are request module, response module, and error handler module. In addition, session module is loaded when it is used in the application. PRADO provides default implementation for all these modules. Custom modules may be configured or developed to override or supplement these core modules.
@@ -34,4 +34,17 @@ Session module encapsulates the functionalities related with user session handli
Error handler module is used to capture and process all error conditions in an application. PRADO uses TErrorHandler as error handler module. It captures all PHP warnings, notices and exceptions, and displays in an appropriate form to end-users. The error handler module can be accessed via the ErrorHandler property of the application instance.
+PRADO is released with a few more modules besides the core ones. They include caching modules (TSqliteCache and TMemCache), user management module (TUserManager), authentication and authorization module (TAuthManager), etc.
+
+When TPageService is requested, it also loads modules specific for page service, including asset manager (TAssetManager), template manager (TTemplateManager), theme/skin manager (TThemeManager), and page state persister (TPageStatePersister).
+
+Custom modules and core modules are all configurable via configurations. +
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