Yii Framework Official Tutorial Supplement 4 - Basic Knowledge: Model-View-Controller (MVC)

Introduction In today's rapidly evolving digital world, it is crucial to build robust, flexible and maintainable WEB applications. The PHPmvc architecture provides an ideal solution to achieve this goal. MVC (Model-View-Controller) is a widely used design pattern that separates various aspects of an application into independent components. The foundation of MVC architecture The core principle of MVC architecture is separation of concerns: Model: encapsulates the data and business logic of the application. View: Responsible for presenting data and handling user interaction. Controller: Coordinates the interaction between models and views, manages user requests and business logic. PHPMVC Architecture The phpMVC architecture follows the traditional MVC pattern, but also introduces language-specific features. The following is PHPMVC

Yii framework middleware: providing multiple data storage support for applications Introduction Middleware (middleware) is an important concept in the Yii framework, which provides multiple data storage support for applications. Middleware acts like a filter, inserting custom code between an application's requests and responses. Through middleware, we can process, verify, filter requests, and then pass the processed results to the next middleware or final handler. Middleware in the Yii framework is very easy to use

The MVC architecture (Model-View-Controller) is one of the most popular patterns in PHP development because it provides a clear structure for organizing code and simplifying the development of WEB applications. While basic MVC principles are sufficient for most web applications, it has some limitations for applications that need to handle complex data or implement advanced functionality. Separating the model layer Separating the model layer is a common technique in advanced MVC architecture. It involves breaking down a model class into smaller subclasses, each focusing on a specific functionality. For example, for an e-commerce application, you might break down the main model class into an order model, a product model, and a customer model. This separation helps improve code maintainability and reusability. Use dependency injection

With the rapid development of web applications, modern web development has become an important skill. Many frameworks and tools are available for developing efficient web applications, among which the Yii framework is a very popular framework. Yii is a high-performance, component-based PHP framework that uses the latest design patterns and technologies, provides powerful tools and components, and is ideal for building complex web applications. In this article, we will discuss how to use Yii framework to build web applications. Install Yii framework first,

Steps to implement web page caching and page chunking using the Yii framework Introduction: During the web development process, in order to improve the performance and user experience of the website, it is often necessary to cache and chunk the page. The Yii framework provides powerful caching and layout functions, which can help developers quickly implement web page caching and page chunking. This article will introduce how to use the Yii framework to implement web page caching and page chunking. 1. Turn on web page caching. In the Yii framework, web page caching can be turned on through the configuration file. Open the main configuration file co

Yii framework middleware: Add logging and debugging capabilities to applications [Introduction] When developing web applications, we usually need to add some additional features to improve the performance and stability of the application. The Yii framework provides the concept of middleware that enables us to perform some additional tasks before and after the application handles the request. This article will introduce how to use the middleware function of the Yii framework to implement logging and debugging functions. [What is middleware] Middleware refers to the processing of requests and responses before and after the application processes the request.

In the Yii framework, controllers play an important role in processing requests. In addition to handling regular page requests, controllers can also be used to handle Ajax requests. This article will introduce how to handle Ajax requests in the Yii framework and provide code examples. In the Yii framework, processing Ajax requests can be carried out through the following steps: The first step is to create a controller (Controller) class. You can inherit the basic controller class yiiwebCo provided by the Yii framework

In modern web application development, debugging tools are indispensable. They help developers find and solve various problems with their applications. As a popular web application framework, the Yii framework naturally provides some debugging tools. This article will focus on the debugging tools in the Yii framework and discuss how they help us analyze and debug applications. GiiGii is a code generator for the Yii framework. It can automatically generate code for Yii applications, such as models, controllers, views, etc. Using Gii,